Revert rename of validate-auth-config

2

.eslintrc

@@ -1,6 +1 @@
-{
+{ "extends": "scality" }
-    "extends": "scality",
-    "parserOptions": {
-        "ecmaVersion": 2020
-    }
-}

.github/workflows/codeql.yaml

@@ -1,25 +0,0 @@
----
-name: codeQL
-
-on:
-  push:
-    branches: [development/*, stabilization/*, hotfix/*]
-  pull_request:
-    branches: [development/*, stabilization/*, hotfix/*]
-  workflow_dispatch:
-
-jobs:
-  analyze:
-    name: Static analysis with CodeQL
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
-        with:
-          languages: javascript, typescript
-
-      - name: Build and analyze
-        uses: github/codeql-action/analyze@v3

.github/workflows/dependency-review.yaml

@@ -1,16 +0,0 @@
----
-name: dependency review
-
-on:
-  pull_request:
-    branches: [development/*, stabilization/*, hotfix/*]
-
-jobs:
-  dependency-review:
-    runs-on: ubuntu-latest
-    steps:
-      - name: 'Checkout Repository'
-        uses: actions/checkout@v4
-
-      - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v4

.github/workflows/tests.yaml

@@ -25,18 +25,18 @@ jobs:
           - 6379:6379
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v2
-    - uses: actions/setup-node@v4
+    - uses: actions/setup-node@v2
       with:
         node-version: '16'
         cache: 'yarn'
     - name: install dependencies
-      run: yarn install --frozen-lockfile --prefer-offline --network-concurrency 1
+      run: yarn cache clean && yarn install --frozen-lockfile
       continue-on-error: true # TODO ARSN-97 Remove it when no errors in TS
     - name: lint yaml
       run: yarn --silent lint_yml
     - name: lint javascript
-      run: yarn --silent lint --max-warnings 0
+      run: yarn --silent lint -- --max-warnings 0
     - name: lint markdown
       run: yarn --silent lint_md
     - name: add hostname
@@ -46,9 +46,7 @@ jobs:
       run: yarn --silent coverage
     - name: run functional tests
       run: yarn ft_test
-    - uses: codecov/codecov-action@v4
+    - uses: codecov/codecov-action@v2
-      with:
-        token: ${{ secrets.CODECOV_TOKEN }}
     - name: run executables tests
       run: yarn install && yarn test
       working-directory: 'lib/executables/pensieveCreds/'
@@ -59,20 +57,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v2
     - name: Install NodeJS
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v2
       with:
         node-version: '16'
         cache: yarn
     - name: Install dependencies
-      run: yarn install --frozen-lockfile --prefer-offline
+      run: yarn cache clean && yarn install --frozen-lockfile
       continue-on-error: true # TODO ARSN-97 Remove it when no errors in TS
     - name: Compile
       run: yarn build
       continue-on-error: true # TODO ARSN-97 Remove it when no errors in TS
     - name: Upload artifacts
-      uses: scality/action-artifacts@v4
+      uses: scality/action-artifacts@v2
       with:
         url: https://artifacts.scality.net
         user: ${{ secrets.ARTIFACTS_USER }}

.swcrc

@@ -1,12 +0,0 @@
-{
-  "$schema": "https://swc.rs/schema.json",
-  "jsc": {
-    "parser": {
-      "syntax": "typescript"
-    },
-    "target": "es2017"
-  },
-  "module": {
-    "type": "commonjs"
-  }
-}

documentation/BucketInfoModelVersion.md

@@ -178,83 +178,3 @@ this._serverSideEncryption.configuredMasterKeyId = configuredMasterKeyId || unde
 ### Usage
 
 Used to store the users configured KMS key id
-
-## Model version 15
-
-### Properties Added
-
-```javascript
-this._tags = tags || null;
-```
-
-The Tag Set of a bucket is an array of objects with Key and Value:
-
-```javascript
-[
-    {
-        Key: 'something',
-        Value: 'some_data'
-    }
-]
-```
-
-## Model version 16
-
-### Properties Added
-
-```javascript
-this._capabilities = capabilities || undefined;
-```
-
-For capacity-enabled buckets, contains the following data:
-
-```javascript
-{
-    _capabilities: {
-        VeeamSOSApi?: {
-            SystemInfo?: {
-                ProtocolVersion: String,
-                ModelName: String,
-                ProtocolCapabilities: {
-                    CapacityInfo: Boolean,
-                    UploadSessions: Boolean,
-                    IAMSTS: Boolean,
-                },
-                APIEndpoints: {
-                    IAMEndpoint: String,
-                    STSEndpoint: String,
-                },
-                SystemRecommendations?: {
-                    S3ConcurrentTaskLimit: Number,
-                    S3MultiObjectDelete: Number,
-                    StorageCurrentTasksLimit: Number,
-                    KbBlockSize: Number,
-                }
-                LastModified?: String,
-            },
-            CapacityInfo?: {
-                Capacity: Number,
-                Available: Number,
-                Used: Number,
-                LastModified?: String,
-            },
-        }
-    },
-}
-```
-
-### Usage
-
-Used to store bucket tagging
-
-## Model version 17
-
-### Properties Added
-
-```javascript
-this._quotaMax = quotaMax || 0;
-```
-
-### Usage
-
-Used to store bucket quota

documentation/listingAlgos/delimiter.md

@@ -1,27 +0,0 @@
-# Delimiter
-
-The Delimiter class handles raw listings from the database with an
-optional delimiter, and fills in a curated listing with "Contents" and
-"CommonPrefixes" as a result.
-
-## Expected Behavior
-
-- only lists keys belonging to the given **prefix** (if provided)
-
-- groups listed keys that have a common prefix ending with a delimiter
-  inside CommonPrefixes
-
-- can take a **marker** or **continuationToken** to list from a specific key
-
-- can take a **maxKeys** parameter to limit how many keys can be returned
-
-## State Chart
-
-- States with grey background are *Idle* states, which are waiting for
-  a new listing key
-
-- States with blue background are *Processing* states, which are
-  actively processing a new listing key passed by the filter()
-  function
-
-![Delimiter State Chart](./pics/delimiterStateChart.svg)

documentation/listingAlgos/delimiterMaster.md

@@ -1,45 +0,0 @@
-# DelimiterMaster
-
-The DelimiterMaster class handles raw listings from the database of a
-versioned or non-versioned bucket with an optional delimiter, and
-fills in a curated listing with "Contents" and "CommonPrefixes" as a
-result.
-
-## Expected Behavior
-
-- only lists latest versions of versioned buckets
-
-- only lists keys belonging to the given **prefix** (if provided)
-
-- does not list latest versions that are delete markers
-
-- groups listed keys that have a common prefix ending with a delimiter
-  inside CommonPrefixes
-
-- can take a **marker** or **continuationToken** to list from a specific key
-
-- can take a **maxKeys** parameter to limit how many keys can be returned
-
-- reconciles internal PHD keys with the next version (those are
-  created when a specific version that is the latest version is
-  deleted)
-
-- skips internal keys like replay keys
-
-## State Chart
-
-- States with grey background are *Idle* states, which are waiting for
-  a new listing key
-
-- States with blue background are *Processing* states, which are
-  actively processing a new listing key passed by the filter()
-  function
-
-### Bucket Vformat=v0
-
-![DelimiterMaster State Chart for v0 format](./pics/delimiterMasterV0StateChart.svg)
-
-### Bucket Vformat=v1
-
-For buckets in versioning key format **v1**, the algorithm used is the
-one from [Delimiter](delimiter.md).

documentation/listingAlgos/delimiterVersions.md

@@ -1,33 +0,0 @@
-# DelimiterVersions
-
-The DelimiterVersions class handles raw listings from the database of a
-versioned or non-versioned bucket with an optional delimiter, and
-fills in a curated listing with "Versions" and "CommonPrefixes" as a
-result.
-
-## Expected Behavior
-
-- lists individual distinct versions of versioned buckets
-
-- only lists keys belonging to the given **prefix** (if provided)
-
-- groups listed keys that have a common prefix ending with a delimiter
-  inside CommonPrefixes
-
-- can take a **keyMarker** and optionally a **versionIdMarker** to
-  list from a specific key or version
-
-- can take a **maxKeys** parameter to limit how many keys can be returned
-
-- skips internal keys like replay keys
-
-## State Chart
-
-- States with grey background are *Idle* states, which are waiting for
-  a new listing key
-
-- States with blue background are *Processing* states, which are
-  actively processing a new listing key passed by the filter()
-  function
-
-![DelimiterVersions State Chart](./pics/delimiterVersionsStateChart.svg)

documentation/listingAlgos/pics/delimiterMasterV0StateChart.dot

@@ -1,45 +0,0 @@
-digraph {
-  node [shape="box",style="filled,rounded",fontsize=16,fixedsize=true,width=3];
-  edge [fontsize=14];
-  rankdir=TB;
-
-  START [shape="circle",width=0.2,label="",style="filled",fillcolor="black"]
-  END [shape="circle",width=0.2,label="",style="filled",fillcolor="black",peripheries=2]
-
-  node [fillcolor="lightgrey"];
-  "NotSkippingPrefixNorVersions.Idle" [label="NotSkippingPrefixNorVersions",group="NotSkippingPrefixNorVersions",width=4];
-  "SkippingPrefix.Idle" [label="SkippingPrefix",group="SkippingPrefix"];
-  "SkippingVersions.Idle" [label="SkippingVersions",group="SkippingVersions"];
-  "WaitVersionAfterPHD.Idle" [label="WaitVersionAfterPHD",group="WaitVersionAfterPHD"];
-
-  node [fillcolor="lightblue"];
-  "NotSkippingPrefixNorVersions.Processing" [label="NotSkippingPrefixNorVersions",group="NotSkippingPrefixNorVersions",width=4];
-  "SkippingPrefix.Processing" [label="SkippingPrefix",group="SkippingPrefix"];
-  "SkippingVersions.Processing" [label="SkippingVersions",group="SkippingVersions"];
-  "WaitVersionAfterPHD.Processing" [label="WaitVersionAfterPHD",group="WaitVersionAfterPHD"];
-
-  START -> "SkippingVersions.Idle" [label="[marker != undefined]"]
-  START -> "NotSkippingPrefixNorVersions.Idle" [label="[marker == undefined]"]
-
-  "NotSkippingPrefixNorVersions.Idle" -> "NotSkippingPrefixNorVersions.Processing" [label="filter(key, value)"]
-  "SkippingPrefix.Idle" -> "SkippingPrefix.Processing" [label="filter(key, value)"]
-  "SkippingVersions.Idle" -> "SkippingVersions.Processing" [label="filter(key, value)"]
-  "WaitVersionAfterPHD.Idle" -> "WaitVersionAfterPHD.Processing" [label="filter(key, value)"]
-
-
-  "NotSkippingPrefixNorVersions.Processing" -> "SkippingVersions.Idle" [label="[Version.isDeleteMarker(value)]\n-> FILTER_ACCEPT"]
-  "NotSkippingPrefixNorVersions.Processing" -> "WaitVersionAfterPHD.Idle" [label="[Version.isPHD(value)]\n-> FILTER_ACCEPT"]
-  "NotSkippingPrefixNorVersions.Processing" -> "SkippingPrefix.Idle" [label="[key.startsWith(<ReplayPrefix>)]\n/ prefix <- <ReplayPrefix>\n-> FILTER_SKIP"]
-  "NotSkippingPrefixNorVersions.Processing" -> END [label="[isListableKey(key, value) and\nKeys == maxKeys]\n-> FILTER_END"]
-  "NotSkippingPrefixNorVersions.Processing" -> "SkippingPrefix.Idle" [label="[isListableKey(key, value) and\nnKeys < maxKeys and\nhasDelimiter(key)]\n/ prefix <- prefixOf(key)\n/ CommonPrefixes.append(prefixOf(key))\n-> FILTER_ACCEPT"]
-  "NotSkippingPrefixNorVersions.Processing" -> "SkippingVersions.Idle" [label="[isListableKey(key, value) and\nnKeys < maxKeys and\nnot hasDelimiter(key)]\n/ Contents.append(key, value)\n-> FILTER_ACCEPT"]
-
-  "SkippingPrefix.Processing" -> "SkippingPrefix.Idle" [label="[key.startsWith(prefix)]\n-> FILTER_SKIP"]
-  "SkippingPrefix.Processing" -> "NotSkippingPrefixNorVersions.Processing" [label="[not key.startsWith(prefix)]"]
-
-  "SkippingVersions.Processing" -> "SkippingVersions.Idle" [label="[isVersionKey(key)]\n-> FILTER_SKIP"]
-  "SkippingVersions.Processing" -> "NotSkippingPrefixNorVersions.Processing" [label="[not isVersionKey(key)]"]
-
-  "WaitVersionAfterPHD.Processing" -> "NotSkippingPrefixNorVersions.Processing" [label="[isVersionKey(key) and master(key) == PHDkey]\n/ key <- master(key)"]
-  "WaitVersionAfterPHD.Processing" -> "NotSkippingPrefixNorVersions.Processing" [label="[not isVersionKey(key) or master(key) != PHDkey]"]
-}

documentation/listingAlgos/pics/delimiterMasterV0StateChart.svg

@@ -1,216 +0,0 @@
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index.ts

@@ -1,138 +1,49 @@
-import * as evaluators from './lib/policyEvaluator/evaluator';
-import evaluatePrincipal from './lib/policyEvaluator/principal';
-import RequestContext, {
-    actionNeedQuotaCheck,
-    actionNeedQuotaCheckCopy,
-    actionWithDataDeletion } from './lib/policyEvaluator/RequestContext';
-import * as requestUtils from './lib/policyEvaluator/requestUtils';
-import * as actionMaps from './lib/policyEvaluator/utils/actionMaps';
-import { validateUserPolicy } from './lib/policy/policyValidator'
-import * as locationConstraints from './lib/patches/locationConstraints';
-import * as userMetadata from './lib/s3middleware/userMetadata';
-import convertToXml from './lib/s3middleware/convertToXml';
-import escapeForXml from './lib/s3middleware/escapeForXml';
-import * as objectLegalHold from './lib/s3middleware/objectLegalHold';
-import * as tagging from './lib/s3middleware/tagging';
-import { checkDateModifiedHeaders } from './lib/s3middleware/validateConditionalHeaders';
-import { validateConditionalHeaders } from './lib/s3middleware/validateConditionalHeaders';
-import MD5Sum from './lib/s3middleware/MD5Sum';
-import NullStream from './lib/s3middleware/nullStream';
-import * as objectUtils from './lib/s3middleware/objectUtils';
-import * as mpuUtils from './lib/s3middleware/azureHelpers/mpuUtils';
-import ResultsCollector from './lib/s3middleware/azureHelpers/ResultsCollector';
-import SubStreamInterface from './lib/s3middleware/azureHelpers/SubStreamInterface';
-import { prepareStream } from './lib/s3middleware/prepareStream';
-import * as processMpuParts from './lib/s3middleware/processMpuParts';
-import * as retention from './lib/s3middleware/objectRetention';
-import * as objectRestore from './lib/s3middleware/objectRestore';
-import * as lifecycleHelpers from './lib/s3middleware/lifecycleHelpers';
-export { default as errors } from './lib/errors';
-export { default as Clustering } from './lib/Clustering';
-export * as ClusterRPC from './lib/clustering/ClusterRPC';
-export * as ipCheck from './lib/ipCheck';
 export * as auth from './lib/auth/auth';
 export * as constants from './lib/constants';
-export * as https from './lib/https';
-export * as metrics from './lib/metrics';
-export * as network from './lib/network';
-export * as s3routes from './lib/s3routes';
-export * as versioning from './lib/versioning';
-export * as stream from './lib/stream';
-export * as jsutil from './lib/jsutil';
-export { default as stringHash } from './lib/stringHash';
 export * as db from './lib/db';
+export { default as errors } from './lib/errors';
 export * as errorUtils from './lib/errorUtils';
 export { default as shuffle } from './lib/shuffle';
+export { default as stringHash } from './lib/stringHash';
+export * as ipCheck from './lib/ipCheck';
+export * as jsutil from './lib/jsutil';
+export * as https from './lib/https';
+export { default as Clustering } from './lib/Clustering';
+export * as algorithms from './lib/algos';
+export * as policies from './lib/policyEvaluator';
+export * as testing from './lib/testing';
+export * as versioning from './lib/versioning';
+export * as network from './lib/network';
+export * as s3routes from './lib/s3routes';
+export * as s3middleware from './lib/s3middleware';
 export * as models from './lib/models';
+export * as metrics from './lib/metrics';
+export * as stream from './lib/stream';
 
-export const algorithms = {
+export const pensieve = {
-    list: require('./lib/algos/list/exportAlgos'),
+    credentialUtils: require('./lib/executables/pensieveCreds/utils'),
-    listTools: {
-        DelimiterTools: require('./lib/algos/list/tools'),
-        Skip: require('./lib/algos/list/skip'),
-    },
-    cache: {
-        GapSet: require('./lib/algos/cache/GapSet'),
-        GapCache: require('./lib/algos/cache/GapCache'),
-        LRUCache: require('./lib/algos/cache/LRUCache'),
-    },
-    stream: {
-        MergeStream: require('./lib/algos/stream/MergeStream'),
-    },
-    SortedSet: require('./lib/algos/set/SortedSet'),
-    Heap: require('./lib/algos/heap/Heap'),
-};
-
-export const policies = {
-    evaluators,
-    validateUserPolicy,
-    evaluatePrincipal,
-    RequestContext,
-    requestUtils,
-    actionMaps,
-    actionNeedQuotaCheck,
-    actionWithDataDeletion,
-    actionNeedQuotaCheckCopy,
-};
-
-export const testing = {
-    matrix: require('./lib/testing/matrix.js'),
-};
-
-export const s3middleware = {
-    userMetadata,
-    convertToXml,
-    escapeForXml,
-    objectLegalHold,
-    tagging,
-    checkDateModifiedHeaders,
-    validateConditionalHeaders,
-    MD5Sum,
-    NullStream,
-    objectUtils,
-    azureHelper: {
-        mpuUtils,
-        ResultsCollector,
-        SubStreamInterface,
-    },
-    prepareStream,
-    processMpuParts,
-    retention,
-    objectRestore,
-    lifecycleHelpers,
 };
 
 export const storage = {
     metadata: {
         MetadataWrapper: require('./lib/storage/metadata/MetadataWrapper'),
         bucketclient: {
-            BucketClientInterface:
+            BucketClientInterface: require('./lib/storage/metadata/bucketclient/BucketClientInterface'),
-            require('./lib/storage/metadata/bucketclient/' +
+            LogConsumer: require('./lib/storage/metadata/bucketclient/LogConsumer'),
-                'BucketClientInterface'),
-            LogConsumer:
-            require('./lib/storage/metadata/bucketclient/LogConsumer'),
         },
         file: {
-            BucketFileInterface:
+            BucketFileInterface: require('./lib/storage/metadata/file/BucketFileInterface'),
-            require('./lib/storage/metadata/file/BucketFileInterface'),
+            MetadataFileServer: require('./lib/storage/metadata/file/MetadataFileServer'),
-            MetadataFileServer:
+            MetadataFileClient: require('./lib/storage/metadata/file/MetadataFileClient'),
-            require('./lib/storage/metadata/file/MetadataFileServer'),
-            MetadataFileClient:
-            require('./lib/storage/metadata/file/MetadataFileClient'),
         },
         inMemory: {
-            metastore:
+            metastore: require('./lib/storage/metadata/in_memory/metastore'),
-            require('./lib/storage/metadata/in_memory/metastore'),
             metadata: require('./lib/storage/metadata/in_memory/metadata'),
-            bucketUtilities:
+            bucketUtilities: require('./lib/storage/metadata/in_memory/bucket_utilities'),
-            require('./lib/storage/metadata/in_memory/bucket_utilities'),
         },
         mongoclient: {
-            MongoClientInterface:
+            MongoClientInterface: require('./lib/storage/metadata/mongoclient/MongoClientInterface'),
-            require('./lib/storage/metadata/mongoclient/' +
+            LogConsumer: require('./lib/storage/metadata/mongoclient/LogConsumer'),
-                'MongoClientInterface'),
-            LogConsumer:
-            require('./lib/storage/metadata/mongoclient/LogConsumer'),
         },
         proxy: {
             Server: require('./lib/storage/metadata/proxy/Server'),
@@ -140,14 +51,11 @@ export const storage = {
     },
     data: {
         DataWrapper: require('./lib/storage/data/DataWrapper'),
-        MultipleBackendGateway:
+        MultipleBackendGateway: require('./lib/storage/data/MultipleBackendGateway'),
-        require('./lib/storage/data/MultipleBackendGateway'),
         parseLC: require('./lib/storage/data/LocationConstraintParser'),
         file: {
-            DataFileStore:
+            DataFileStore: require('./lib/storage/data/file/DataFileStore'),
-            require('./lib/storage/data/file/DataFileStore'),
+            DataFileInterface: require('./lib/storage/data/file/DataFileInterface'),
-            DataFileInterface:
-            require('./lib/storage/data/file/DataFileInterface'),
         },
         external: {
             AwsClient: require('./lib/storage/data/external/AwsClient'),
@@ -165,11 +73,3 @@ export const storage = {
     },
     utils: require('./lib/storage/utils'),
 };
-
-export const pensieve = {
-    credentialUtils: require('./lib/executables/pensieveCreds/utils'),
-};
-
-export const patches = {
-    locationConstraints,
-};

lib/Clustering.ts

@@ -1,28 +1,16 @@
-import cluster, { Worker } from 'cluster';
+import * as cluster from 'cluster';
-import * as werelogs from 'werelogs';
 
 export default class Clustering {
-    _size: number;
-    _shutdownTimeout: number;
-    _logger: werelogs.Logger;
-    _shutdown: boolean;
-    _workers: (Worker | undefined)[];
-    _workersTimeout: (NodeJS.Timeout | undefined)[];
-    _workersStatus: (number | string | undefined)[];
-    _status: number;
-    _exitCb?: (clustering: Clustering, exitSignal?: string) => void;
-    _index?: number;
-
     /**
      * Constructor
      *
-     * @param size Cluster size
+     * @param {number} size Cluster size
-     * @param logger Logger object
+     * @param {Logger} logger Logger object
-     * @param [shutdownTimeout=5000] Change default shutdown timeout
+     * @param {number} [shutdownTimeout=5000] Change default shutdown timeout
      * releasing ressources
-     * @return itself
+     * @return {Clustering} itself
      */
-    constructor(size: number, logger: werelogs.Logger, shutdownTimeout?: number) {
+    constructor(size, logger, shutdownTimeout) {
         this._size = size;
         if (size < 1) {
             throw new Error('Cluster size must be greater than or equal to 1');
@@ -42,6 +30,7 @@ export default class Clustering {
      * Method called after a stop() call
      *
      * @private
+     * @return {undefined}
      */
     _afterStop() {
         // Asuming all workers shutdown gracefully
@@ -50,11 +39,10 @@ export default class Clustering {
         for (let i = 0; i < size; ++i) {
             // If the process return an error code or killed by a signal,
             // set the status
-            const status = this._workersStatus[i];
+            if (typeof this._workersStatus[i] === 'number') {
-            if (typeof status === 'number') {
+                this._status = this._workersStatus[i];
-                this._status = status;
                 break;
-            } else if (typeof status === 'string') {
+            } else if (typeof this._workersStatus[i] === 'string') {
                 this._status = 1;
                 break;
             }
@@ -68,17 +56,13 @@ export default class Clustering {
     /**
      * Method called when a worker exited
      *
-     * @param worker - Current worker
+     * @param {Cluster.worker} worker - Current worker
-     * @param i - Worker index
+     * @param {number} i - Worker index
-     * @param code - Exit code
+     * @param {number} code - Exit code
-     * @param signal - Exit signal
+     * @param {string} signal - Exit signal
+     * @return {undefined}
      */
-    _workerExited(
+    _workerExited(worker, i, code, signal) {
-        worker: Worker,
-        i: number,
-        code: number,
-        signal: string,
-    ) {
         // If the worker:
         //   - was killed by a signal
         //   - return an error code
@@ -105,9 +89,8 @@ export default class Clustering {
             this._workersStatus[i] = undefined;
         }
         this._workers[i] = undefined;
-        const timeout = this._workersTimeout[i];
+        if (this._workersTimeout[i]) {
-        if (timeout) {
+            clearTimeout(this._workersTimeout[i]);
-            clearTimeout(timeout);
             this._workersTimeout[i] = undefined;
         }
         // If we don't trigger the stop method, the watchdog
@@ -125,28 +108,29 @@ export default class Clustering {
     /**
      * Method to start a worker
      *
-     * @param i Index of the starting worker
+     * @param {number} i Index of the starting worker
+     * @return {undefined}
      */
-    startWorker(i: number) {
+    startWorker(i) {
-        if (!cluster.isPrimary) {
+        if (!cluster.isMaster) {
             return;
         }
         // Fork a new worker
         this._workers[i] = cluster.fork();
         // Listen for message from the worker
-        this._workers[i]!.on('message', msg => {
+        this._workers[i].on('message', msg => {
             // If the worker is ready, send him his id
             if (msg === 'ready') {
-                this._workers[i]!.send({ msg: 'setup', id: i });
+                this._workers[i].send({ msg: 'setup', id: i });
             }
         });
-        this._workers[i]!.on('exit', (code, signal) =>
+        this._workers[i].on('exit', (code, signal) =>
-            this._workerExited(this._workers[i]!, i, code, signal));
+            this._workerExited(this._workers[i], i, code, signal));
         // Trigger when the worker was started
-        this._workers[i]!.on('online', () => {
+        this._workers[i].on('online', () => {
             this._logger.info('Worker started', {
                 id: i,
-                childPid: this._workers[i]!.process.pid,
+                childPid: this._workers[i].process.pid,
             });
         });
     }
@@ -154,10 +138,10 @@ export default class Clustering {
     /**
      * Method to put handler on cluster exit
      *
-     * @param cb - Callback(Clustering, [exitSignal])
+     * @param {function} cb - Callback(Clustering, [exitSignal])
-     * @return Itself
+     * @return {Clustering} Itself
      */
-    onExit(cb: (clustering: Clustering, exitSignal?: string) => void) {
+    onExit(cb) {
         this._exitCb = cb;
         return this;
     }
@@ -166,33 +150,33 @@ export default class Clustering {
      * Method to start the cluster (if master) or to start the callback
      * (worker)
      *
-     * @param cb - Callback to run the worker
+     * @param {function} cb - Callback to run the worker
-     * @return itself
+     * @return {Clustering} itself
      */
-    start(cb: (clustering: Clustering) => void) {
+    start(cb) {
         process.on('SIGINT', () => this.stop('SIGINT'));
         process.on('SIGHUP', () => this.stop('SIGHUP'));
         process.on('SIGQUIT', () => this.stop('SIGQUIT'));
         process.on('SIGTERM', () => this.stop('SIGTERM'));
         process.on('SIGPIPE', () => {});
-        process.on('exit', (code?: number, signal?: string) => {
+        process.on('exit', (code, signal) => {
             if (this._exitCb) {
                 this._status = code || 0;
                 return this._exitCb(this, signal);
             }
             return process.exit(code || 0);
         });
-        process.on('uncaughtException', (err: Error) => {
+        process.on('uncaughtException', err => {
             this._logger.fatal('caught error', {
                 error: err.message,
-                stack: err.stack?.split('\n')?.map(str => str.trim()),
+                stack: err.stack.split('\n').map(str => str.trim()),
             });
             process.exit(1);
         });
-        if (!cluster.isPrimary) {
+        if (!cluster.isMaster) {
             // Waiting for message from master to
             // know the id of the slave cluster
-            process.on('message', (msg: any) => {
+            process.on('message', msg => {
                 if (msg.msg === 'setup') {
                     this._index = msg.id;
                     cb(this);
@@ -200,7 +184,7 @@ export default class Clustering {
             });
             // Send message to the master, to let him know
             // the worker has started
-            process.send?.('ready');
+            process.send('ready');
         } else {
             for (let i = 0; i < this._size; ++i) {
                 this.startWorker(i);
@@ -212,7 +196,7 @@ export default class Clustering {
     /**
      * Method to get workers
      *
-     * @return Workers
+     * @return {Cluster.Worker[]} Workers
      */
     getWorkers() {
         return this._workers;
@@ -221,7 +205,7 @@ export default class Clustering {
     /**
      * Method to get the status of the cluster
      *
-     * @return Status code
+     * @return {number} Status code
      */
     getStatus() {
         return this._status;
@@ -230,7 +214,7 @@ export default class Clustering {
     /**
      * Method to return if it's the master process
      *
-     * @return - True if master, false otherwise
+     * @return {boolean} - True if master, false otherwise
      */
     isMaster() {
         return this._index === undefined;
@@ -239,7 +223,7 @@ export default class Clustering {
     /**
      * Method to get index of the worker
      *
-     * @return Worker index, undefined if it's master
+     * @return {number|undefined} Worker index, undefined if it's master
      */
     getIndex() {
         return this._index;
@@ -248,10 +232,11 @@ export default class Clustering {
     /**
      * Method to stop the cluster
      *
-     * @param signal - Set internally when processes killed by signal
+     * @param {string} signal - Set internally when processes killed by signal
+     * @return {undefined}
      */
-    stop(signal?: string) {
+    stop(signal) {
-        if (!cluster.isPrimary) {
+        if (!cluster.isMaster) {
             if (this._exitCb) {
                 return this._exitCb(this, signal);
             }
@@ -264,17 +249,11 @@ export default class Clustering {
             }
             this._workersTimeout[i] = setTimeout(() => {
                 // Kill the worker if the sigterm was ignored or take too long
-                if (worker.process.pid) {
                 process.kill(worker.process.pid, 'SIGKILL');
-                }
             }, this._shutdownTimeout);
             // Send sigterm to the process, allowing to release ressources
             // and save some states
-            if (worker.process.pid) {
             return process.kill(worker.process.pid, 'SIGTERM');
-            } else {
-              return true;
-            }
         });
     }
 }

lib/algos/cache/GapCache.ts

@@ -1,363 +0,0 @@
-import { OrderedSet } from '@js-sdsl/ordered-set';
-import {
-    default as GapSet,
-    GapSetEntry,
-} from './GapSet';
-
-// the API is similar but is not strictly a superset of GapSetInterface
-// so we don't extend from it
-export interface GapCacheInterface {
-    exposureDelayMs: number;
-    maxGapWeight: number;
-    size: number;
-
-    setGap: (firstKey: string, lastKey: string, weight: number) => void;
-    removeOverlappingGaps: (overlappingKeys: string[]) => number;
-    lookupGap: (minKey: string, maxKey?: string) => Promise<GapSetEntry | null>;
-    [Symbol.iterator]: () => Iterator<GapSetEntry>;
-    toArray: () => GapSetEntry[];
-};
-
-class GapCacheUpdateSet {
-    newGaps: GapSet;
-    updatedKeys: OrderedSet<string>;
-
-    constructor(maxGapWeight: number) {
-        this.newGaps = new GapSet(maxGapWeight);
-        this.updatedKeys = new OrderedSet();
-    }
-
-    addUpdateBatch(updatedKeys: OrderedSet<string>): void {
-        this.updatedKeys.union(updatedKeys);
-    }
-};
-
-/**
- * Cache of listing "gaps" i.e. ranges of keys that can be skipped
- * over during listing (because they only contain delete markers as
- * latest versions).
- *
- * Typically, a single GapCache instance would be attached to a raft session.
- *
- * The API usage is as follows:
- *
- * - Initialize a GapCache instance by calling start() (this starts an internal timer)
- *
- * - Insert a gap or update an existing one via setGap()
- *
- * - Lookup existing gaps via lookupGap()
- *
- * - Invalidate gaps that overlap a specific set of keys via removeOverlappingGaps()
- *
- * - Shut down a GapCache instance by calling stop() (this stops the internal timer)
- *
- * Gaps inserted via setGap() are not exposed immediately to lookupGap(), but only:
- *
- * - after a certain delay always larger than 'exposureDelayMs' and usually shorter
- *   than twice this value (but might be slightly longer in rare cases)
- *
- * - and only if they haven't been invalidated by a recent call to removeOverlappingGaps()
- *
- * This ensures atomicity between gap creation and invalidation from updates under
- * the condition that a gap is created from first key to last key within the time defined
- * by 'exposureDelayMs'.
- *
- * The implementation is based on two extra temporary "update sets" on top of the main
- * exposed gap set, one called "staging" and the other "frozen", each containing a
- * temporary updated gap set and a list of updated keys to invalidate gaps with (coming
- * from calls to removeOverlappingGaps()). Every "exposureDelayMs" milliseconds, the frozen
- * gaps are invalidated by all key updates coming from either of the "staging" or "frozen"
- * update set, then merged into the exposed gaps set, after which the staging updates become
- * the frozen updates and won't receive any new gap until the next cycle.
- */
-export default class GapCache implements GapCacheInterface {
-    _exposureDelayMs: number;
-    maxGaps: number;
-
-    _stagingUpdates: GapCacheUpdateSet;
-    _frozenUpdates: GapCacheUpdateSet;
-    _exposedGaps: GapSet;
-    _exposeFrozenInterval: NodeJS.Timeout | null;
-
-    /**
-     * @constructor
-     *
-     * @param {number} exposureDelayMs - minimum delay between
-     * insertion of a gap via setGap() and its exposure via
-     * lookupGap()
-     * @param {number} maxGaps - maximum number of cached gaps, after
-     * which no new gap can be added by setGap(). (Note: a future
-     * improvement could replace this by an eviction strategy)
-     * @param {number} maxGapWeight - maximum "weight" of individual
-     * cached gaps, which is also the granularity for
-     * invalidation. Individual gaps can be chained together,
-     * which lookupGap() transparently consolidates in the response
-     * into a single large gap.
-     */
-    constructor(exposureDelayMs: number, maxGaps: number, maxGapWeight: number) {
-        this._exposureDelayMs = exposureDelayMs;
-        this.maxGaps = maxGaps;
-
-        this._stagingUpdates = new GapCacheUpdateSet(maxGapWeight);
-        this._frozenUpdates = new GapCacheUpdateSet(maxGapWeight);
-        this._exposedGaps = new GapSet(maxGapWeight);
-        this._exposeFrozenInterval = null;
-    }
-
-    /**
-     * Create a GapCache from an array of exposed gap entries (used in tests)
-     *
-     * @return {GapCache} - a new GapCache instance
-     */
-    static createFromArray(
-        gaps: GapSetEntry[],
-        exposureDelayMs: number,
-        maxGaps: number,
-        maxGapWeight: number
-    ): GapCache {
-        const gapCache = new GapCache(exposureDelayMs, maxGaps, maxGapWeight);
-        gapCache._exposedGaps = GapSet.createFromArray(gaps, maxGapWeight)
-        return gapCache;
-    }
-
-    /**
-     * Internal helper to remove gaps in the staging and frozen sets
-     * overlapping with previously updated keys, right before the
-     * frozen gaps get exposed.
-     *
-     * @return {undefined}
-     */
-    _removeOverlappingGapsBeforeExpose(): void {
-        for (const { updatedKeys } of [this._stagingUpdates, this._frozenUpdates]) {
-            if (updatedKeys.size() === 0) {
-                continue;
-            }
-            for (const { newGaps } of [this._stagingUpdates, this._frozenUpdates]) {
-                if (newGaps.size === 0) {
-                    continue;
-                }
-                newGaps.removeOverlappingGaps(updatedKeys);
-            }
-        }
-    }
-
-    /**
-     * This function is the core mechanism that updates the exposed gaps in the
-     * cache. It is called on a regular interval defined by 'exposureDelayMs'.
-     *
-     * It does the following in order:
-     *
-     * - remove gaps from the frozen set that overlap with any key present in a
-     *   batch passed to removeOverlappingGaps() since the last two triggers of
-     *   _exposeFrozen()
-     *
-     * - merge the remaining gaps from the frozen set to the exposed set, which
-     *   makes them visible from calls to lookupGap()
-     *
-     * - rotate by freezing the currently staging updates and initiating a new
-     *   staging updates set
-     *
-     * @return {undefined}
-     */
-    _exposeFrozen(): void {
-        this._removeOverlappingGapsBeforeExpose();
-        for (const gap of this._frozenUpdates.newGaps) {
-            // Use a trivial strategy to keep the cache size within
-            // limits: refuse to add new gaps when the size is above
-            // the 'maxGaps' threshold. We solely rely on
-            // removeOverlappingGaps() to make space for new gaps.
-            if (this._exposedGaps.size < this.maxGaps) {
-                this._exposedGaps.setGap(gap.firstKey, gap.lastKey, gap.weight);
-            }
-        }
-        this._frozenUpdates = this._stagingUpdates;
-        this._stagingUpdates = new GapCacheUpdateSet(this.maxGapWeight);
-    }
-
-    /**
-     * Start the internal GapCache timer
-     *
-     * @return {undefined}
-     */
-    start(): void {
-        if (this._exposeFrozenInterval) {
-            return;
-        }
-        this._exposeFrozenInterval = setInterval(
-            () => this._exposeFrozen(),
-            this._exposureDelayMs);
-    }
-
-    /**
-     * Stop the internal GapCache timer
-     *
-     * @return {undefined}
-     */
-    stop(): void {
-        if (this._exposeFrozenInterval) {
-            clearInterval(this._exposeFrozenInterval);
-            this._exposeFrozenInterval = null;
-        }
-    }
-
-    /**
-     * Record a gap between two keys, associated with a weight to
-     * limit individual gap's spanning ranges in the cache, for a more
-     * granular invalidation.
-     *
-     * The function handles splitting and merging existing gaps to
-     * maintain an optimal weight of cache entries.
-     *
-     * NOTE 1: the caller must ensure that the full length of the gap
-     * between 'firstKey' and 'lastKey' has been built from a listing
-     * snapshot that is more recent than 'exposureDelayMs' milliseconds,
-     * in order to guarantee that the exposed gap will be fully
-     * covered (and potentially invalidated) from recent calls to
-     * removeOverlappingGaps().
-     *
-     * NOTE 2: a usual pattern when building a large gap from multiple
-     * calls to setGap() is to start the next gap from 'lastKey',
-     * which will be passed as 'firstKey' in the next call, so that
-     * gaps can be chained together and consolidated by lookupGap().
-     *
-     * @param {string} firstKey - first key of the gap
-     * @param {string} lastKey - last key of the gap, must be greater
-     * or equal than 'firstKey'
-     * @param {number} weight - total weight between 'firstKey' and 'lastKey'
-     * @return {undefined}
-     */
-    setGap(firstKey: string, lastKey: string, weight: number): void {
-        this._stagingUpdates.newGaps.setGap(firstKey, lastKey, weight);
-    }
-
-    /**
-     * Remove gaps that overlap with a given set of keys. Used to
-     * invalidate gaps when keys are inserted or deleted.
-     *
-     * @param {OrderedSet<string> | string[]} overlappingKeys - remove gaps that
-     * overlap with any of this set of keys
-     * @return {number} - how many gaps were removed from the exposed
-     * gaps only (overlapping gaps not yet exposed are also invalidated
-     * but are not accounted for in the returned value)
-     */
-    removeOverlappingGaps(overlappingKeys: OrderedSet<string> | string[]): number {
-        let overlappingKeysSet;
-        if (Array.isArray(overlappingKeys)) {
-            overlappingKeysSet = new OrderedSet(overlappingKeys);
-        } else {
-            overlappingKeysSet = overlappingKeys;
-        }
-        this._stagingUpdates.addUpdateBatch(overlappingKeysSet);
-        return this._exposedGaps.removeOverlappingGaps(overlappingKeysSet);
-    }
-
-    /**
-     * Lookup the next exposed gap that overlaps with [minKey, maxKey]. Internally
-     * chained gaps are coalesced in the response into a single contiguous large gap.
-     *
-     * @param {string} minKey - minimum key overlapping with the returned gap
-     * @param {string} [maxKey] - maximum key overlapping with the returned gap
-     * @return {Promise<GapSetEntry | null>} - result of the lookup if a gap
-     *   was found, null otherwise, as a Promise
-     */
-    lookupGap(minKey: string, maxKey?: string): Promise<GapSetEntry | null> {
-        return this._exposedGaps.lookupGap(minKey, maxKey);
-    }
-
-    /**
-     * Get the maximum weight setting for individual gaps.
-     *
-     * @return {number} - maximum weight of individual gaps
-     */
-    get maxGapWeight(): number {
-        return this._exposedGaps.maxWeight;
-    }
-
-    /**
-     * Set the maximum weight setting for individual gaps.
-     *
-     * @param {number} gapWeight - maximum weight of individual gaps
-     */
-    set maxGapWeight(gapWeight: number) {
-        this._exposedGaps.maxWeight = gapWeight;
-        // also update transient gap sets
-        this._stagingUpdates.newGaps.maxWeight = gapWeight;
-        this._frozenUpdates.newGaps.maxWeight = gapWeight;
-    }
-
-    /**
-     * Get the exposure delay in milliseconds, which is the minimum
-     * time after which newly cached gaps will be exposed by
-     * lookupGap().
-     *
-     * @return {number} - exposure delay in milliseconds
-     */
-    get exposureDelayMs(): number {
-        return this._exposureDelayMs;
-    }
-
-    /**
-     * Set the exposure delay in milliseconds, which is the minimum
-     * time after which newly cached gaps will be exposed by
-     * lookupGap(). Setting this attribute automatically updates the
-     * internal state to honor the new value.
-     *
-     * @param {number} - exposure delay in milliseconds
-     */
-    set exposureDelayMs(exposureDelayMs: number) {
-        if (exposureDelayMs !== this._exposureDelayMs) {
-            this._exposureDelayMs = exposureDelayMs;
-            if (this._exposeFrozenInterval) {
-                // invalidate all pending gap updates, as the new interval may not be
-                // safe for them
-                this._stagingUpdates = new GapCacheUpdateSet(this.maxGapWeight);
-                this._frozenUpdates = new GapCacheUpdateSet(this.maxGapWeight);
-
-                // reinitialize the _exposeFrozenInterval timer with the updated delay
-                this.stop();
-                this.start();
-            }
-        }
-    }
-
-    /**
-     * Get the number of exposed gaps
-     *
-     * @return {number} number of exposed gaps
-     */
-    get size(): number {
-        return this._exposedGaps.size;
-    }
-
-    /**
-     * Iterate over exposed gaps
-     *
-     * @return {Iterator<GapSetEntry>} an iterator over exposed gaps
-     */
-    [Symbol.iterator](): Iterator<GapSetEntry> {
-        return this._exposedGaps[Symbol.iterator]();
-    }
-
-    /**
-     * Get an array of all exposed gaps
-     *
-     * @return {GapSetEntry[]} array of exposed gaps
-     */
-    toArray(): GapSetEntry[] {
-        return this._exposedGaps.toArray();
-    }
-
-    /**
-     * Clear all exposed and staging gaps from the cache.
-     *
-     * Note: retains invalidating updates from removeOverlappingGaps()
-     * for correctness of gaps inserted afterwards.
-     *
-     * @return {undefined}
-     */
-    clear(): void {
-        this._stagingUpdates.newGaps = new GapSet(this.maxGapWeight);
-        this._frozenUpdates.newGaps = new GapSet(this.maxGapWeight);
-        this._exposedGaps = new GapSet(this.maxGapWeight);
-    }
-}

lib/algos/cache/GapSet.ts

@@ -1,366 +0,0 @@
-import assert from 'assert';
-import { OrderedSet } from '@js-sdsl/ordered-set';
-
-import errors from '../../errors';
-
-export type GapSetEntry = {
-    firstKey: string,
-    lastKey: string,
-    weight: number,
-};
-
-export interface GapSetInterface {
-    maxWeight: number;
-    size: number;
-
-    setGap: (firstKey: string, lastKey: string, weight: number) => GapSetEntry;
-    removeOverlappingGaps: (overlappingKeys: string[]) => number;
-    lookupGap: (minKey: string, maxKey?: string) => Promise<GapSetEntry | null>;
-    [Symbol.iterator]: () => Iterator<GapSetEntry>;
-    toArray: () => GapSetEntry[];
-};
-
-/**
- * Specialized data structure to support caching of listing "gaps",
- * i.e. ranges of keys that can be skipped over during listing
- * (because they only contain delete markers as latest versions)
- */
-export default class GapSet implements GapSetInterface, Iterable<GapSetEntry> {
-    _gaps: OrderedSet<GapSetEntry>;
-    _maxWeight: number;
-
-    /**
-     * @constructor
-
-     * @param {number} maxWeight - weight threshold for each cached
-     * gap (unitless). Triggers splitting gaps when reached
-     */
-    constructor(maxWeight: number) {
-        this._gaps = new OrderedSet(
-            [],
-            (left: GapSetEntry, right: GapSetEntry) => (
-                left.firstKey < right.firstKey ? -1 :
-                left.firstKey > right.firstKey ? 1 : 0
-            )
-        );
-        this._maxWeight = maxWeight;
-    }
-
-    /**
-     * Create a GapSet from an array of gap entries (used in tests)
-     */
-    static createFromArray(gaps: GapSetEntry[], maxWeight: number): GapSet {
-        const gapSet = new GapSet(maxWeight);
-        for (const gap of gaps) {
-            gapSet._gaps.insert(gap);
-        }
-        return gapSet;
-    }
-
-    /**
-     * Record a gap between two keys, associated with a weight to limit
-     * individual gap sizes in the cache.
-     *
-     * The function handles splitting and merging existing gaps to
-     * maintain an optimal weight of cache entries.
-     *
-     * @param {string} firstKey - first key of the gap
-     * @param {string} lastKey - last key of the gap, must be greater
-     * or equal than 'firstKey'
-     * @param {number} weight - total weight between 'firstKey' and 'lastKey'
-     * @return {GapSetEntry} - existing or new gap entry
-     */
-    setGap(firstKey: string, lastKey: string, weight: number): GapSetEntry {
-        assert(lastKey >= firstKey);
-
-        // Step 1/4: Find the closest left-overlapping gap, and either re-use it
-        // or chain it with a new gap depending on the weights if it exists (otherwise
-        // just creates a new gap).
-        const curGapIt = this._gaps.reverseLowerBound(<GapSetEntry>{ firstKey });
-        let curGap;
-        if (curGapIt.isAccessible()) {
-            curGap = curGapIt.pointer;
-            if (curGap.lastKey >= lastKey) {
-                // return fully overlapping gap already cached
-                return curGap;
-            }
-        }
-        let remainingWeight = weight;
-        if (!curGap                         // no previous gap
-            || curGap.lastKey < firstKey    // previous gap not overlapping
-            || (curGap.lastKey === firstKey // previous gap overlapping by one key...
-                && curGap.weight + weight > this._maxWeight) // ...but we can't extend it
-           ) {
-            // create a new gap indexed by 'firstKey'
-            curGap = { firstKey, lastKey: firstKey, weight: 0 };
-            this._gaps.insert(curGap);
-        } else if (curGap.lastKey > firstKey && weight > this._maxWeight) {
-            // previous gap is either fully or partially contained in the new gap
-            // and cannot be extended: substract its weight from the total (heuristic
-            // in case the previous gap doesn't start at 'firstKey', which is the
-            // uncommon case)
-            remainingWeight -= curGap.weight;
-
-            // there may be an existing chained gap starting with the previous gap's
-            // 'lastKey': use it if it exists
-            const chainedGapIt = this._gaps.find(<GapSetEntry>{ firstKey: curGap.lastKey });
-            if (chainedGapIt.isAccessible()) {
-                curGap = chainedGapIt.pointer;
-            } else {
-                // no existing chained gap: chain a new gap to the previous gap
-                curGap = {
-                    firstKey: curGap.lastKey,
-                    lastKey: curGap.lastKey,
-                    weight: 0,
-                };
-                this._gaps.insert(curGap);
-            }
-        }
-        // Step 2/4: Cleanup existing gaps fully included in firstKey -> lastKey, and
-        // aggregate their weights in curGap to define the minimum weight up to the
-        // last merged gap.
-        let nextGap;
-        while (true) {
-            const nextGapIt = this._gaps.upperBound(<GapSetEntry>{ firstKey: curGap.firstKey });
-            nextGap = nextGapIt.isAccessible() && nextGapIt.pointer;
-            // stop the cleanup when no more gap or if the next gap is not fully
-            // included in curGap
-            if (!nextGap || nextGap.lastKey > lastKey) {
-                break;
-            }
-            this._gaps.eraseElementByIterator(nextGapIt);
-            curGap.lastKey = nextGap.lastKey;
-            curGap.weight += nextGap.weight;
-        }
-
-        // Step 3/4: Extend curGap to lastKey, adjusting the weight.
-        // At this point, curGap weight is the minimum weight of the finished gap, save it
-        // for step 4.
-        let minMergedWeight = curGap.weight;
-        if (curGap.lastKey === firstKey && firstKey !== lastKey) {
-            // extend the existing gap by the full amount 'firstKey -> lastKey'
-            curGap.lastKey = lastKey;
-            curGap.weight += remainingWeight;
-        } else if (curGap.lastKey <= lastKey) {
-            curGap.lastKey = lastKey;
-            curGap.weight = remainingWeight;
-        }
-
-        // Step 4/4: Find the closest right-overlapping gap, and if it exists, either merge
-        // it or chain it with curGap depending on the weights.
-        if (nextGap && nextGap.firstKey <= lastKey) {
-            // nextGap overlaps with the new gap: check if we can merge it
-            minMergedWeight += nextGap.weight;
-            let mergedWeight;
-            if (lastKey === nextGap.firstKey) {
-                // nextGap is chained with curGap: add the full weight of nextGap
-                mergedWeight = curGap.weight + nextGap.weight;
-            } else {
-                // strict overlap: don't add nextGap's weight unless
-                // it's larger than the sum of merged ranges (as it is
-                // then included in `minMergedWeight`)
-                mergedWeight = Math.max(curGap.weight, minMergedWeight);
-            }
-            if (mergedWeight <= this._maxWeight) {
-                // merge nextGap into curGap
-                curGap.lastKey = nextGap.lastKey;
-                curGap.weight = mergedWeight;
-                this._gaps.eraseElementByKey(nextGap);
-            } else {
-                // adjust the last key to chain with nextGap and substract the next
-                // gap's weight from curGap (heuristic)
-                curGap.lastKey = nextGap.firstKey;
-                curGap.weight = Math.max(mergedWeight - nextGap.weight, 0);
-                curGap = nextGap;
-            }
-        }
-        // return a copy of curGap
-        return Object.assign({}, curGap);
-    }
-
-    /**
-     * Remove gaps that overlap with one or more keys in a given array or
-     * OrderedSet. Used to invalidate gaps when keys are inserted or deleted.
-     *
-     * @param {OrderedSet<string> | string[]} overlappingKeys - remove gaps that overlap
-     * with any of this set of keys
-     * @return {number} - how many gaps were removed
-     */
-    removeOverlappingGaps(overlappingKeys: OrderedSet<string> | string[]): number {
-        // To optimize processing with a large number of keys and/or gaps, this function:
-        //
-        // 1. converts the overlappingKeys array to a OrderedSet (if not already a OrderedSet)
-        // 2. queries both the gaps set and the overlapping keys set in a loop, which allows:
-        //    - skipping ranges of overlapping keys at once when there is no new overlapping gap
-        //    - skipping ranges of gaps at once when there is no overlapping key
-        //
-        // This way, it is efficient when the number of non-overlapping gaps is large
-        // (which is the most common case in practice).
-
-        let overlappingKeysSet;
-        if (Array.isArray(overlappingKeys)) {
-            overlappingKeysSet = new OrderedSet(overlappingKeys);
-        } else {
-            overlappingKeysSet = overlappingKeys;
-        }
-        const firstKeyIt = overlappingKeysSet.begin();
-        let currentKey = firstKeyIt.isAccessible() && firstKeyIt.pointer;
-        let nRemoved = 0;
-        while (currentKey) {
-            const closestGapIt = this._gaps.reverseUpperBound(<GapSetEntry>{ firstKey: currentKey });
-            if (closestGapIt.isAccessible()) {
-                const closestGap = closestGapIt.pointer;
-                if (currentKey <= closestGap.lastKey) {
-                    // currentKey overlaps closestGap: remove the gap
-                    this._gaps.eraseElementByIterator(closestGapIt);
-                    nRemoved += 1;
-                }
-            }
-            const nextGapIt = this._gaps.lowerBound(<GapSetEntry>{ firstKey: currentKey });
-            if (!nextGapIt.isAccessible()) {
-                // no more gap: we're done
-                return nRemoved;
-            }
-            const nextGap = nextGapIt.pointer;
-            // advance to the last key potentially overlapping with nextGap
-            let currentKeyIt = overlappingKeysSet.reverseLowerBound(nextGap.lastKey);
-            if (currentKeyIt.isAccessible()) {
-                currentKey = currentKeyIt.pointer;
-                if (currentKey >= nextGap.firstKey) {
-                    // currentKey overlaps nextGap: remove the gap
-                    this._gaps.eraseElementByIterator(nextGapIt);
-                    nRemoved += 1;
-                }
-            }
-            // advance to the first key potentially overlapping with another gap
-            currentKeyIt = overlappingKeysSet.lowerBound(nextGap.lastKey);
-            currentKey = currentKeyIt.isAccessible() && currentKeyIt.pointer;
-        }
-        return nRemoved;
-    }
-
-    /**
-     * Internal helper to coalesce multiple chained gaps into a single gap.
-     *
-     * It is only used to construct lookupGap() return values and
-     * doesn't modify the GapSet.
-     *
-     * NOTE: The function may take a noticeable amount of time and CPU
-     * to execute if a large number of chained gaps have to be
-     * coalesced, but it should never take more than a few seconds. In
-     * most cases it should take less than a millisecond. It regularly
-     * yields to the nodejs event loop to avoid blocking it during a
-     * long execution.
-     *
-     * @param {GapSetEntry} firstGap - first gap of the chain to coalesce with
-     * the next ones in the chain
-     * @return {Promise<GapSetEntry>} - a new coalesced entry, as a Promise
-     */
-    _coalesceGapChain(firstGap: GapSetEntry): Promise<GapSetEntry> {
-        return new Promise(resolve => {
-            const coalescedGap: GapSetEntry = Object.assign({}, firstGap);
-            const coalesceGapChainIteration = () => {
-                // efficiency trade-off: 100 iterations of log(N) complexity lookups should
-                // not block the event loop for too long
-                for (let opCounter = 0; opCounter < 100; ++opCounter) {
-                    const chainedGapIt = this._gaps.find(
-                            <GapSetEntry>{ firstKey: coalescedGap.lastKey });
-                    if (!chainedGapIt.isAccessible()) {
-                        // chain is complete
-                        return resolve(coalescedGap);
-                    }
-                    const chainedGap = chainedGapIt.pointer;
-                    if (chainedGap.firstKey === chainedGap.lastKey) {
-                        // found a single-key gap: chain is complete
-                        return resolve(coalescedGap);
-                    }
-                    coalescedGap.lastKey = chainedGap.lastKey;
-                    coalescedGap.weight += chainedGap.weight;
-                }
-                // yield to the event loop before continuing the process
-                // of coalescing the gap chain
-                return process.nextTick(coalesceGapChainIteration);
-            };
-            coalesceGapChainIteration();
-        });
-    }
-
-    /**
-     * Lookup the next gap that overlaps with [minKey, maxKey]. Internally chained
-     * gaps are coalesced in the response into a single contiguous large gap.
-     *
-     * @param {string} minKey - minimum key overlapping with the returned gap
-     * @param {string} [maxKey] - maximum key overlapping with the returned gap
-     * @return {Promise<GapSetEntry | null>} - result of the lookup if a gap
-     *   was found, null otherwise, as a Promise
-     */
-    async lookupGap(minKey: string, maxKey?: string): Promise<GapSetEntry | null> {
-        let firstGap: GapSetEntry | null = null;
-        const minGapIt = this._gaps.reverseLowerBound(<GapSetEntry>{ firstKey: minKey });
-        const minGap = minGapIt.isAccessible() && minGapIt.pointer;
-        if (minGap && minGap.lastKey >= minKey) {
-            firstGap = minGap;
-        } else {
-            const maxGapIt = this._gaps.upperBound(<GapSetEntry>{ firstKey: minKey });
-            const maxGap = maxGapIt.isAccessible() && maxGapIt.pointer;
-            if (maxGap && (maxKey === undefined || maxGap.firstKey <= maxKey)) {
-                firstGap = maxGap;
-            }
-        }
-        if (!firstGap) {
-            return null;
-        }
-        return this._coalesceGapChain(firstGap);
-    }
-
-    /**
-     * Get the maximum weight setting for individual gaps.
-     *
-     * @return {number} - maximum weight of individual gaps
-     */
-    get maxWeight(): number {
-        return this._maxWeight;
-    }
-
-    /**
-     * Set the maximum weight setting for individual gaps.
-     *
-     * @param {number} gapWeight - maximum weight of individual gaps
-     */
-    set maxWeight(gapWeight: number) {
-        this._maxWeight = gapWeight;
-    }
-
-    /**
-     * Get the number of gaps stored in this set.
-     *
-     * @return {number} - number of gaps stored in this set
-     */
-    get size(): number {
-        return this._gaps.size();
-    }
-
-    /**
-     * Iterate over each gap of the set, ordered by first key
-     *
-     * @return {Iterator<GapSetEntry>} - an iterator over all gaps
-     *   Example:
-     *     for (const gap of myGapSet) { ... }
-     */
-    [Symbol.iterator](): Iterator<GapSetEntry> {
-        return this._gaps[Symbol.iterator]();
-    }
-
-    /**
-     * Return an array containing all gaps, ordered by first key
-     *
-     * NOTE: there is a toArray() method in the OrderedSet implementation
-     * but it does not scale well and overflows the stack quickly. This is
-     * why we provide an implementation based on an iterator.
-     *
-     * @return {GapSetEntry[]} - an array containing all gaps
-     */
-    toArray(): GapSetEntry[] {
-        return [...this];
-    }
-}

lib/algos/cache/LRUCache.ts

@@ -1,4 +1,4 @@
-const assert = require('assert');
+import assert from 'assert';
 
 /**
  * @class
@@ -6,13 +6,19 @@ const assert = require('assert');
  * number of items and a Least Recently Used (LRU) strategy for
  * eviction.
  */
-class LRUCache {
+export default class LRUCache {
+    _maxEntries;
+    _entryMap;
+    _entryCount;
+    _lruTail;
+    _lruHead;
+
     /**
      * @constructor
-     * @param {number} maxEntries - maximum number of entries kept in
+     * @param maxEntries - maximum number of entries kept in
      * the cache
      */
-    constructor(maxEntries) {
+    constructor(maxEntries: number) {
         assert(maxEntries >= 1);
         this._maxEntries = maxEntries;
         this.clear();
@@ -22,12 +28,12 @@ class LRUCache {
      * Add or update the value associated to a key in the cache,
      * making it the most recently accessed for eviction purpose.
      *
-     * @param {string} key - key to add
+     * @param key - key to add
-     * @param {object} value - associated value (can be of any type)
+     * @param value - associated value (can be of any type)
-     * @return {boolean} true if the cache contained an entry with
+     * @return true if the cache contained an entry with
      * this key, false if it did not
      */
-    add(key, value) {
+    add(key: string, value): boolean {
         let entry = this._entryMap[key];
         if (entry) {
             entry.value = value;
@@ -54,12 +60,12 @@ class LRUCache {
      * Get the value associated to a key in the cache, making it the
      * most recently accessed for eviction purpose.
      *
-     * @param {string} key - key of which to fetch the associated value
+     * @param key - key of which to fetch the associated value
-     * @return {object|undefined} - returns the associated value if
+     * @return returns the associated value if
      * exists in the cache, or undefined if not found - either if the
      * key was never added or if it has been evicted from the cache.
      */
-    get(key) {
+    get(key: string) {
         const entry = this._entryMap[key];
         if (entry) {
             // make the entry the most recently used by re-pushing it
@@ -74,12 +80,12 @@ class LRUCache {
     /**
      * Remove an entry from the cache if exists
      *
-     * @param {string} key - key to remove
+     * @param key - key to remove
-     * @return {boolean} true if an entry has been removed, false if
+     * @return true if an entry has been removed, false if
      * there was no entry with this key in the cache - either if the
      * key was never added or if it has been evicted from the cache.
      */
-    remove(key) {
+    remove(key: string): boolean {
         const entry = this._entryMap[key];
         if (entry) {
             this._removeEntry(entry);
@@ -91,16 +97,14 @@ class LRUCache {
     /**
      * Get the current number of cached entries
      *
-     * @return {number} current number of cached entries
+     * @return current number of cached entries
      */
-    count() {
+    count(): number {
         return this._entryCount;
     }
 
     /**
      * Remove all entries from the cache
-     *
-     * @return {undefined}
      */
     clear() {
         this._entryMap = {};
@@ -113,8 +117,7 @@ class LRUCache {
      * Push an entry to the front of the LRU list, making it the most
      * recently accessed
      *
-     * @param {object} entry - entry to push
+     * @param entry - entry to push
-     * @return {undefined}
      */
     _lruPushEntry(entry) {
         /* eslint-disable no-param-reassign */
@@ -133,8 +136,7 @@ class LRUCache {
     /**
      * Remove an entry from the LRU list
      *
-     * @param {object} entry - entry to remove
+     * @param entry - entry to remove
-     * @return {undefined}
      */
     _lruRemoveEntry(entry) {
         /* eslint-disable no-param-reassign */
@@ -154,8 +156,7 @@ class LRUCache {
     /**
      * Helper function to remove an existing entry from the cache
      *
-     * @param {object} entry - cache entry to remove
+     * @param entry - cache entry to remove
-     * @return {undefined}
      */
     _removeEntry(entry) {
         this._lruRemoveEntry(entry);
@@ -163,5 +164,3 @@ class LRUCache {
         this._entryCount -= 1;
     }
 }
-
-module.exports = LRUCache;

lib/algos/heap/Heap.ts

@@ -1,124 +0,0 @@
-export enum HeapOrder {
-    Min = -1,
-    Max = 1,
-}
-
-export enum CompareResult {
-    LT = -1,
-    EQ = 0,
-    GT = 1,
-}
-
-export type CompareFunction = (x: any, y: any) => CompareResult;
-
-export class Heap {
-    size: number;
-    _maxSize: number;
-    _order: HeapOrder;
-    _heap: any[];
-    _cmpFn: CompareFunction;
-    
-    constructor(size: number, order: HeapOrder, cmpFn: CompareFunction) {
-        this.size = 0;
-        this._maxSize = size;
-        this._order = order;
-        this._cmpFn = cmpFn;
-        this._heap = new Array<any>(this._maxSize);
-    }
-
-    _parent(i: number): number {
-        return Math.floor((i - 1) / 2);
-    }
-
-    _left(i: number): number {
-        return Math.floor((2 * i) + 1);
-    }
-
-    _right(i: number): number {
-        return Math.floor((2 * i) + 2);
-    }
-
-    _shouldSwap(childIdx: number, parentIdx: number): boolean {
-        return this._cmpFn(this._heap[childIdx], this._heap[parentIdx]) as number === this._order as number;
-    }
-
-    _swap(i: number, j: number) {
-        const tmp = this._heap[i];
-        this._heap[i] = this._heap[j];
-        this._heap[j] = tmp;
-    }
-
-    _heapify(i: number) {
-        const l = this._left(i);
-        const r = this._right(i);
-        let c = i;
-
-        if (l < this.size && this._shouldSwap(l, c)) {
-            c = l;
-        }
-
-        if (r < this.size && this._shouldSwap(r, c)) {
-            c = r;
-        }
-
-        if (c != i) {
-            this._swap(c, i);
-            this._heapify(c);
-        }
-    }
-
-    add(item: any): any {
-        if (this.size >= this._maxSize) {
-            return new Error('Max heap size reached');
-        }
-
-        ++this.size;
-        let c = this.size - 1;
-        this._heap[c] = item;
-
-        while (c > 0) {
-            if (!this._shouldSwap(c, this._parent(c))) {
-                return null;
-            }
-
-            this._swap(c, this._parent(c));
-            c = this._parent(c);
-        }
-
-        return null;
-    };
-
-    remove(): any {
-        if (this.size <= 0) {
-            return null;
-        }
-
-        const ret = this._heap[0];
-        this._heap[0] = this._heap[this.size - 1];
-        this._heapify(0);
-        --this.size;
-
-        return ret;
-    };
-
-    peek(): any {
-        if (this.size <= 0) {
-            return null;
-        }
-
-        return this._heap[0];
-    };
-}
-
-export class MinHeap extends Heap {
-    constructor(size: number, cmpFn: CompareFunction) {
-        super(size, HeapOrder.Min, cmpFn);
-    }
-}
-
-export class MaxHeap extends Heap {
-    constructor(size: number, cmpFn: CompareFunction) {
-        super(size, HeapOrder.Max, cmpFn);
-    }
-} 
-

lib/algos/index.ts

@@ -0,0 +1,10 @@
+import * as DelimiterTools from './list/tools';
+import { Skip } from './list/skip';
+import LRUCache from './cache/LRUCache';
+import MergeStream from './stream/MergeStream';
+
+export * as list from './list/exportAlgos';
+export { default as SortedSet } from './set/SortedSet';
+export const listTools = { DelimiterTools, Skip };
+export const cache = { LRUCache };
+export const stream = { MergeStream };

lib/algos/list/Extension.ts

@@ -1,7 +1,4 @@
-'use strict'; // eslint-disable-line strict
+import { FILTER_SKIP, SKIP_NONE } from './tools';
-
-const { FILTER_ACCEPT, SKIP_NONE } = require('./tools');
-
 // Use a heuristic to amortize the cost of JSON
 // serialization/deserialization only on largest metadata where the
 // potential for size reduction is high, considering the bulk of the
@@ -22,7 +19,12 @@ const TRIM_METADATA_MIN_BLOB_SIZE = 10000;
 /**
  *  Base class of listing extensions.
  */
-class Extension {
+export default class Extension {
+    parameters;
+    logger;
+    res?: any[];
+    keys: number;
+
     /**
      * This takes a list of parameters and a logger as the inputs.
      * Derivatives should have their own format regarding parameters.
@@ -51,14 +53,14 @@ class Extension {
      * heavy unused fields, or left untouched (depending on size
      * heuristics)
      */
-    trimMetadata(value) {
+    trimMetadata(value: string): string {
-        let ret = undefined;
+        let ret: any = undefined;
         if (value.length >= TRIM_METADATA_MIN_BLOB_SIZE) {
             try {
                 ret = JSON.parse(value);
                 delete ret.location;
                 ret = JSON.stringify(ret);
-            } catch (e) {
+            } catch (e: any) {
                 // Prefer returning an unfiltered data rather than
                 // stopping the service in case of parsing failure.
                 // The risk of this approach is a potential
@@ -66,7 +68,8 @@ class Extension {
                 // used by repd.
                 this.logger.warn(
                     'Could not parse Object Metadata while listing',
-                    { err: e.toString() });
+                    { err: e.toString() }
+                );
             }
         }
         return ret || value;
@@ -92,38 +95,31 @@ class Extension {
      * @param {object} entry - a listing entry from metadata
      *                         expected format: { key, value }
      * @return {number} - result of filtering the entry:
-     *                    FILTER_ACCEPT: entry is accepted and may or not be included
+     *                    > 0: entry is accepted and included in the result
-     *                                   in the result
+     *                    = 0: entry is accepted but not included (skipping)
-     *                    FILTER_SKIP: listing may skip directly (with "gte" param) to
+     *                    < 0: entry is not accepted, listing should finish
-     *                                 the key returned by the skipping() method
-     *                    FILTER_END: the results are complete, listing can be stopped
      */
-    filter(/* entry: { key, value } */) {
+    filter(entry): number {
-        return FILTER_ACCEPT;
+        return entry ? FILTER_SKIP : FILTER_SKIP;
     }
 
     /**
-     * Provides the next key at which the listing task is allowed to skip to.
+     * Provides the insight into why filter is skipping an entry. This could be
-     * This could allow to skip over:
+     * because it is skipping a range of delimited keys or a range of specific
-     * - a key prefix ending with the delimiter
+     * version when doing master version listing.
-     * - all remaining versions of an object when doing a current
-     *   versions listing in v0 format
-     * - a cached "gap" of deleted objects when doing a current
-     *   versions listing in v0 format
      *
-     * @return {string} - the next key at which the listing task is allowed to skip to
+     * @return the insight: a common prefix or a master key,
+     *                                 or SKIP_NONE if there is no insight
      */
-    skipping() {
+    skipping(): string | undefined {
         return SKIP_NONE;
     }
 
     /**
      * Get the listing resutls. Format depends on derivatives' specific logic.
-     * @return {Array} - The listed elements
+     * @return The listed elements
      */
     result() {
         return this.res;
     }
 }
-
-module.exports.default = Extension;

lib/algos/list/MPU.ts

@@ -1,9 +1,12 @@
-'use strict'; // eslint-disable-line strict
+import {
-
+    inc,
-const { inc, checkLimit, listingParamsMasterKeysV0ToV1,
+    checkLimit,
-    FILTER_END, FILTER_ACCEPT, SKIP_NONE } = require('./tools');
+    listingParamsMasterKeysV0ToV1,
+    FILTER_END,
+    FILTER_ACCEPT,
+} from './tools';
 const DEFAULT_MAX_KEYS = 1000;
-const VSConst = require('../../versioning/constants').VersioningConstants;
+import { VersioningConstants as VSConst } from '../../versioning/constants';
 const { DbPrefixes, BucketVersioningKeyFormat } = VSConst;
 
 function numberDefault(num, defaultNum) {
@@ -14,7 +17,22 @@ function numberDefault(num, defaultNum) {
 /**
  *  Class for the MultipartUploads extension
  */
-class MultipartUploads {
+export class MultipartUploads {
+    params
+    vFormat
+    CommonPrefixes
+    Uploads
+    IsTruncated
+    NextKeyMarker
+    NextUploadIdMarker
+    prefixLength
+    queryPrefixLength
+    keys
+    maxKeys
+    delimiter
+    splitter
+    logger
+
     /**
      *  Constructor of the extension
      *  Init and check parameters
@@ -39,7 +57,9 @@ class MultipartUploads {
         this.splitter = params.splitter;
         this.logger = logger;
 
-        Object.assign(this, {
+        Object.assign(
+            this,
+            {
                 [BucketVersioningKeyFormat.v0]: {
                     genMDParams: this.genMDParamsV0,
                     getObjectKey: this.getObjectKeyV0,
@@ -48,13 +68,15 @@ class MultipartUploads {
                     genMDParams: this.genMDParamsV1,
                     getObjectKey: this.getObjectKeyV1,
                 },
-        }[this.vFormat]);
+            }[this.vFormat]
+        );
     }
 
     genMDParamsV0() {
         const params = {};
         if (this.params.keyMarker) {
-            params.gt = `overview${this.params.splitter}` +
+            params.gt =
+                `overview${this.params.splitter}` +
                 `${this.params.keyMarker}${this.params.splitter}`;
             if (this.params.uploadIdMarker) {
                 params.gt += `${this.params.uploadIdMarker}`;
@@ -147,14 +169,20 @@ class MultipartUploads {
         if (this.delimiter) {
             const mpuPrefixSlice = `overview${this.splitter}`.length;
             const mpuKey = key.slice(mpuPrefixSlice);
-            const commonPrefixIndex = mpuKey.indexOf(this.delimiter,
+            const commonPrefixIndex = mpuKey.indexOf(
-                this.queryPrefixLength);
+                this.delimiter,
+                this.queryPrefixLength
+            );
 
             if (commonPrefixIndex === -1) {
                 this.addUpload(value);
             } else {
-                this.addCommonPrefix(mpuKey.substring(0,
+                this.addCommonPrefix(
-                    commonPrefixIndex + this.delimiter.length));
+                    mpuKey.substring(
+                        0,
+                        commonPrefixIndex + this.delimiter.length
+                    )
+                );
             }
         } else {
             this.addUpload(value);
@@ -163,7 +191,7 @@ class MultipartUploads {
     }
 
     skipping() {
-        return SKIP_NONE;
+        return '';
     }
 
     /**
@@ -182,7 +210,3 @@ class MultipartUploads {
         };
     }
 }
-
-module.exports = {
-    MultipartUploads,
-};

lib/algos/list/basic.ts

@@ -1,14 +1,17 @@
-'use strict'; // eslint-disable-line strict
+import Extension from './Extension';
+import { checkLimit, FILTER_END, FILTER_ACCEPT, FILTER_SKIP } from './tools';
 
-const Extension = require('./Extension').default;
-
-const { checkLimit, FILTER_END, FILTER_ACCEPT } = require('./tools');
 const DEFAULT_MAX_KEYS = 10000;
 
 /**
  *  Class of an extension doing the simple listing
  */
-class List extends Extension {
+export class List extends Extension {
+    maxKeys: number;
+    filterKey;
+    filterKeyStartsWith;
+    res: any[];
+
     /**
      *  Constructor
      *  Set the logger and the res
@@ -30,15 +33,17 @@ class List extends Extension {
     }
 
     genMDParams() {
-        const params = this.parameters ? {
+        const params = this.parameters
+            ? {
                   gt: this.parameters.gt,
                   gte: this.parameters.gte || this.parameters.start,
                   lt: this.parameters.lt,
                   lte: this.parameters.lte || this.parameters.end,
                   keys: this.parameters.keys,
                   values: this.parameters.values,
-        } : {};
+              }
-        Object.keys(params).forEach(key => {
+            : {};
+        Object.keys(params).forEach((key) => {
             if (params[key] === null || params[key] === undefined) {
                 delete params[key];
             }
@@ -53,29 +58,30 @@ class List extends Extension {
      *
      * @return {Boolean} Returns true if matches, else false.
      */
-    customFilter(value) {
+    customFilter(value: string): boolean {
-        let _value;
+        let _value: any;
         try {
             _value = JSON.parse(value);
-        } catch (e) {
+        } catch (e: any) {
             // Prefer returning an unfiltered data rather than
             // stopping the service in case of parsing failure.
             // The risk of this approach is a potential
             // reproduction of MD-692, where too much memory is
             // used by repd.
-            this.logger.warn(
+            this.logger.warn('Could not parse Object Metadata while listing', {
-                'Could not parse Object Metadata while listing',
+                err: e.toString(),
-                { err: e.toString() });
+            });
             return false;
         }
         if (_value.customAttributes !== undefined) {
             for (const key of Object.keys(_value.customAttributes)) {
-                if (this.filterKey !== undefined &&
+                if (this.filterKey !== undefined && key === this.filterKey) {
-                    key === this.filterKey) {
                     return true;
                 }
-                if (this.filterKeyStartsWith !== undefined &&
+                if (
-                    key.startsWith(this.filterKeyStartsWith)) {
+                    this.filterKeyStartsWith !== undefined &&
+                    key.startsWith(this.filterKeyStartsWith)
+                ) {
                     return true;
                 }
             }
@@ -90,16 +96,18 @@ class List extends Extension {
      *  @return {number} - > 0 : continue listing
      *                     < 0 : listing done
      */
-    filter(elem) {
+    filter(elem): number {
-        // Check if the result array is full
+        // Check first in case of maxkeys <= 0
         if (this.keys >= this.maxKeys) {
             return FILTER_END;
         }
-        if ((this.filterKey !== undefined ||
+        if (
+            (this.filterKey !== undefined ||
                 this.filterKeyStartsWith !== undefined) &&
             typeof elem === 'object' &&
-            !this.customFilter(elem.value)) {
+            !this.customFilter(elem.value)
-            return FILTER_ACCEPT;
+        ) {
+            return FILTER_SKIP;
         }
         if (typeof elem === 'object') {
             this.res.push({
@@ -121,7 +129,3 @@ class List extends Extension {
         return this.res;
     }
 }
-
-module.exports = {
-    List,
-};

lib/algos/list/delimiter.ts

@@ -1,48 +1,29 @@
-'use strict'; // eslint-disable-line strict
+import Extension from './Extension';
-
+import {
-const Extension = require('./Extension').default;
+    inc,
-const { inc, listingParamsMasterKeysV0ToV1,
+    listingParamsMasterKeysV0ToV1,
-    FILTER_END, FILTER_ACCEPT, FILTER_SKIP, SKIP_NONE } = require('./tools');
+    FILTER_END,
-const VSConst = require('../../versioning/constants').VersioningConstants;
-const { DbPrefixes, BucketVersioningKeyFormat } = VSConst;
-
-export interface FilterState {
-    id: number,
-};
-
-export interface FilterReturnValue {
     FILTER_ACCEPT,
     FILTER_SKIP,
-    FILTER_END,
+} from './tools';
-};
+import { VersioningConstants as VSConst } from '../../versioning/constants';
+const { DbPrefixes, BucketVersioningKeyFormat } = VSConst;
 
-export const enum DelimiterFilterStateId {
+/**
-    NotSkipping = 1,
+ * Find the common prefix in the path
-    SkippingPrefix = 2,
+ *
-};
+ * @param {String} key            - path of the object
-
+ * @param {String} delimiter      - separator
-export interface DelimiterFilterState_NotSkipping extends FilterState {
+ * @param {Number} delimiterIndex - 'folder' index in the path
-    id: DelimiterFilterStateId.NotSkipping,
+ * @return {String}               - CommonPrefix
-};
+ */
-
+function getCommonPrefix(
-export interface DelimiterFilterState_SkippingPrefix extends FilterState {
+    key: string,
-    id: DelimiterFilterStateId.SkippingPrefix,
+    delimiter: string,
-    prefix: string;
+    delimiterIndex: number
-};
+): string {
-
+    return key.substring(0, delimiterIndex + delimiter.length);
-type KeyHandler = (key: string, value: string) => FilterReturnValue;
+}
-
-export type ResultObject = {
-    CommonPrefixes: string[];
-    Contents: {
-        key: string;
-        value: string;
-    }[];
-    IsTruncated: boolean;
-    Delimiter ?: string;
-    NextMarker ?: string;
-    NextContinuationToken ?: string;
-};
 
 /**
  * Handle object listing with parameters
@@ -57,9 +38,23 @@ export type ResultObject = {
  * @prop {Number} maxKeys              - number of keys to list
  */
 export class Delimiter extends Extension {
-
+    CommonPrefixes: string[];
-    state: FilterState;
+    Contents: string[];
-    keyHandlers: { [id: number]: KeyHandler };
+    IsTruncated: boolean;
+    NextMarker?: string;
+    keys: number;
+    delimiter?: string;
+    prefix?: string;
+    maxKeys: number;
+    marker;
+    startAfter;
+    continuationToken;
+    alphabeticalOrder;
+    vFormat;
+    NextContinuationToken;
+    startMarker;
+    continueMarker;
+    nextContinueMarker;
 
     /**
      * Create a new Delimiter instance
@@ -78,6 +73,9 @@ export class Delimiter extends Extension {
      *                                                   format
      * @param {String}  [parameters.continuationToken] - obfuscated amazon
      *                                                   token
+     * @param {Boolean} [parameters.alphabeticalOrder] - Either the result is
+     *                                                   alphabetically ordered
+     *                                                   or not
      * @param {RequestLogger} logger                   - The logger of the
      *                                                   request
      * @param {String} [vFormat]                       - versioning key format
@@ -85,25 +83,51 @@ export class Delimiter extends Extension {
     constructor(parameters, logger, vFormat) {
         super(parameters, logger);
         // original listing parameters
+        this.keys = 0;
         this.delimiter = parameters.delimiter;
         this.prefix = parameters.prefix;
-        this.maxKeys = parameters.maxKeys || 1000;
-
-        if (parameters.v2) {
-            this.marker = parameters.continuationToken || parameters.startAfter;
-        } else {
         this.marker = parameters.marker;
-        }
+        this.maxKeys = parameters.maxKeys || 1000;
-        this.nextMarker = this.marker;
+        this.startAfter = parameters.startAfter;
+        this.continuationToken = parameters.continuationToken;
+        this.alphabeticalOrder =
+            typeof parameters.alphabeticalOrder !== 'undefined'
+                ? parameters.alphabeticalOrder
+                : true;
 
         this.vFormat = vFormat || BucketVersioningKeyFormat.v0;
         // results
         this.CommonPrefixes = [];
         this.Contents = [];
         this.IsTruncated = false;
-        this.keyHandlers = {};
+        this.NextMarker = parameters.marker;
+        this.NextContinuationToken =
+            parameters.continuationToken || parameters.startAfter;
 
-        Object.assign(this, {
+        this.startMarker = parameters.v2 ? 'startAfter' : 'marker';
+        this.continueMarker = parameters.v2 ? 'continuationToken' : 'marker';
+        this.nextContinueMarker = parameters.v2
+            ? 'NextContinuationToken'
+            : 'NextMarker';
+
+        if (
+            this.delimiter !== undefined &&
+            this[this.nextContinueMarker] !== undefined &&
+            this[this.nextContinueMarker].startsWith(this.prefix || '')
+        ) {
+            const nextDelimiterIndex = this[this.nextContinueMarker].indexOf(
+                this.delimiter,
+                this.prefix ? this.prefix.length : 0
+            );
+            this[this.nextContinueMarker] = this[this.nextContinueMarker].slice(
+                0,
+                nextDelimiterIndex + this.delimiter.length
+            );
+        }
+
+        Object.assign(
+            this,
+            {
                 [BucketVersioningKeyFormat.v0]: {
                     genMDParams: this.genMDParamsV0,
                     getObjectKey: this.getObjectKeyV0,
@@ -114,50 +138,23 @@ export class Delimiter extends Extension {
                     getObjectKey: this.getObjectKeyV1,
                     skipping: this.skippingV1,
                 },
-        }[this.vFormat]);
+            }[this.vFormat]
-
+        );
-        // if there is a delimiter, we may skip ranges by prefix,
-        // hence using the NotSkippingPrefix flavor that checks the
-        // subprefix up to the delimiter for the NotSkipping state
-        if (this.delimiter) {
-            this.setKeyHandler(
-                DelimiterFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingPrefix.bind(this));
-        } else {
-            // listing without a delimiter never has to skip over any
-            // prefix -> use NeverSkipping flavor for the NotSkipping
-            // state
-            this.setKeyHandler(
-                DelimiterFilterStateId.NotSkipping,
-                this.keyHandler_NeverSkipping.bind(this));
-        }
-        this.setKeyHandler(
-            DelimiterFilterStateId.SkippingPrefix,
-            this.keyHandler_SkippingPrefix.bind(this));
-
-        this.state = <DelimiterFilterState_NotSkipping> {
-            id: DelimiterFilterStateId.NotSkipping,
-        };
     }
 
     genMDParamsV0() {
-        const params: { gt ?: string, gte ?: string, lt ?: string } = {};
+        const params: { gte?: string; lt?: string; gt?: string } = {};
         if (this.prefix) {
             params.gte = this.prefix;
             params.lt = inc(this.prefix);
         }
-        if (this.marker && this.delimiter) {
+        const startVal = this[this.continueMarker] || this[this.startMarker];
-            const commonPrefix = this.getCommonPrefix(this.marker);
+        if (startVal) {
-            if (commonPrefix) {
+            if (params.gte && params.gte > startVal) {
-                const afterPrefix = inc(commonPrefix);
+                return params;
-                if (!params.gte || afterPrefix > params.gte) {
-                    params.gte = afterPrefix;
             }
-            }
-        }
-        if (this.marker && (!params.gte || this.marker >= params.gte)) {
             delete params.gte;
-            params.gt = this.marker;
+            params.gt = startVal;
         }
         return params;
     }
@@ -189,53 +186,21 @@ export class Delimiter extends Extension {
      *  @param {String} value - The value of the key
      *  @return {number}      - indicates if iteration should continue
      */
-    addContents(key: string, value: string): void {
+    addContents(key: string, value: string): number {
+        if (this._reachedMaxKeys()) {
+            return FILTER_END;
+        }
         this.Contents.push({ key, value: this.trimMetadata(value) });
+        this[this.nextContinueMarker] = key;
         ++this.keys;
-        this.nextMarker = key;
+        return FILTER_ACCEPT;
     }
 
-    getCommonPrefix(key: string): string | undefined {
+    getObjectKeyV0(obj: { key: string }) {
-        if (!this.delimiter) {
-            return undefined;
-        }
-        const baseIndex = this.prefix ? this.prefix.length : 0;
-        const delimiterIndex = key.indexOf(this.delimiter, baseIndex);
-        if (delimiterIndex === -1) {
-            return undefined;
-        }
-        return key.substring(0, delimiterIndex + this.delimiter.length);
-    }
-
-    /**
-     * Add a Common Prefix in the list
-     * @param {String} commonPrefix   - common prefix to add
-     * @param {String} key            - full key starting with commonPrefix
-     * @return {Boolean}     - indicates if iteration should continue
-     */
-    addCommonPrefix(commonPrefix: string, key: string): void {
-        // add the new prefix to the list
-        this.CommonPrefixes.push(commonPrefix);
-        ++this.keys;
-        this.nextMarker = commonPrefix;
-    }
-
-    addCommonPrefixOrContents(key: string, value: string): string | undefined {
-        // add the subprefix to the common prefixes if the key has the delimiter
-        const commonPrefix = this.getCommonPrefix(key);
-        if (commonPrefix) {
-            this.addCommonPrefix(commonPrefix, key);
-            return commonPrefix;
-        }
-        this.addContents(key, value);
-        return undefined;
-    }
-
-    getObjectKeyV0(obj: { key: string }): string {
         return obj.key;
     }
 
-    getObjectKeyV1(obj: { key: string }): string {
+    getObjectKeyV1(obj: { key: string }) {
         return obj.key.slice(DbPrefixes.Master.length);
     }
 
@@ -250,81 +215,71 @@ export class Delimiter extends Extension {
      *  @param {String} obj.value - The value of the element
      *  @return {number}          - indicates if iteration should continue
      */
-    filter(obj: { key: string, value: string }): FilterReturnValue {
+    filter(obj: { key: string; value: string }): number {
         const key = this.getObjectKey(obj);
         const value = obj.value;
-
+        if (
-        return this.handleKey(key, value);
+            (this.prefix && !key.startsWith(this.prefix)) ||
-    }
+            (this.alphabeticalOrder &&
-
+                typeof this[this.nextContinueMarker] === 'string' &&
-    setState(state: FilterState): void {
+                key <= this[this.nextContinueMarker])
-        this.state = state;
+        ) {
-    }
-
-    setKeyHandler(stateId: number, keyHandler: KeyHandler): void {
-        this.keyHandlers[stateId] = keyHandler;
-    }
-
-    handleKey(key: string, value: string): FilterReturnValue {
-        return this.keyHandlers[this.state.id](key, value);
-    }
-
-    keyHandler_NeverSkipping(key: string, value: string): FilterReturnValue {
-        if (this._reachedMaxKeys()) {
-            return FILTER_END;
-        }
-        this.addContents(key, value);
-        return FILTER_ACCEPT;
-    }
-
-    keyHandler_NotSkippingPrefix(key: string, value: string): FilterReturnValue {
-        if (this._reachedMaxKeys()) {
-            return FILTER_END;
-        }
-        const commonPrefix = this.addCommonPrefixOrContents(key, value);
-        if (commonPrefix) {
-            // transition into SkippingPrefix state to skip all following keys
-            // while they start with the same prefix
-            this.setState(<DelimiterFilterState_SkippingPrefix> {
-                id: DelimiterFilterStateId.SkippingPrefix,
-                prefix: commonPrefix,
-            });
-        }
-        return FILTER_ACCEPT;
-    }
-
-    keyHandler_SkippingPrefix(key: string, value: string): FilterReturnValue {
-        const { prefix } = <DelimiterFilterState_SkippingPrefix> this.state;
-        if (key.startsWith(prefix)) {
             return FILTER_SKIP;
         }
-        this.setState(<DelimiterFilterState_NotSkipping> {
+        if (this.delimiter) {
-            id: DelimiterFilterStateId.NotSkipping,
+            const baseIndex = this.prefix ? this.prefix.length : 0;
-        });
+            const delimiterIndex = key.indexOf(this.delimiter, baseIndex);
-        return this.handleKey(key, value);
+            if (delimiterIndex === -1) {
+                return this.addContents(key, value);
+            }
+            return this.addCommonPrefix(key, delimiterIndex);
+        }
+        return this.addContents(key, value);
     }
 
-    skippingBase(): string | undefined {
+    /**
-        switch (this.state.id) {
+     * Add a Common Prefix in the list
-        case DelimiterFilterStateId.SkippingPrefix:
+     * @param {String} key   - object name
-            const { prefix } = <DelimiterFilterState_SkippingPrefix> this.state;
+     * @param {Number} index - after prefix starting point
-            return inc(prefix);
+     * @return {Boolean}     - indicates if iteration should continue
-
+     */
-        default:
+    addCommonPrefix(key: string, index: number): boolean {
-            return SKIP_NONE;
+        const commonPrefix = getCommonPrefix(key, this.delimiter, index);
+        if (
+            this.CommonPrefixes.indexOf(commonPrefix) === -1 &&
+            this[this.nextContinueMarker] !== commonPrefix
+        ) {
+            if (this._reachedMaxKeys()) {
+                return FILTER_END;
             }
+            this.CommonPrefixes.push(commonPrefix);
+            this[this.nextContinueMarker] = commonPrefix;
+            ++this.keys;
+            return FILTER_ACCEPT;
+        }
+        return FILTER_SKIP;
     }
 
-    skippingV0() {
+    /**
-        return this.skippingBase();
+     * If repd happens to want to skip listing on a bucket in v0
+     * versioning key format, here is an idea.
+     *
+     * @return {string} - the present range (NextMarker) if repd believes
+     *                    that it's enough and should move on
+     */
+    skippingV0(): string {
+        return this[this.nextContinueMarker];
     }
 
-    skippingV1() {
+    /**
-        const skipTo = this.skippingBase();
+     * If repd happens to want to skip listing on a bucket in v1
-        if (skipTo === SKIP_NONE) {
+     * versioning key format, here is an idea.
-            return SKIP_NONE;
+     *
-        }
+     * @return {string} - the present range (NextMarker) if repd believes
-        return DbPrefixes.Master + skipTo;
+     *                    that it's enough and should move on
+     */
+    skippingV1(): string {
+        return DbPrefixes.Master + this[this.nextContinueMarker];
     }
 
     /**
@@ -333,23 +288,28 @@ export class Delimiter extends Extension {
      *  isn't truncated
      *  @return {Object} - following amazon format
      */
-    result(): ResultObject {
+    result() {
         /* NextMarker is only provided when delimiter is used.
          * specified in v1 listing documentation
          * http://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGET.html
          */
-        const result: ResultObject = {
+        const result = {
             CommonPrefixes: this.CommonPrefixes,
             Contents: this.Contents,
             IsTruncated: this.IsTruncated,
             Delimiter: this.delimiter,
         };
         if (this.parameters.v2) {
+            //
             result.NextContinuationToken = this.IsTruncated
-                ? this.nextMarker : undefined;
+                ? this.NextContinuationToken
+                : undefined;
         } else {
-            result.NextMarker = (this.IsTruncated && this.delimiter)
+            //
-                ? this.nextMarker : undefined;
+            result.NextMarker =
+                this.IsTruncated && this.delimiter
+                    ? this.NextMarker
+                    : undefined;
         }
         return result;
     }

lib/algos/list/delimiterCurrent.ts

@@ -1,127 +0,0 @@
-const { DelimiterMaster } = require('./delimiterMaster');
-const { FILTER_ACCEPT, FILTER_END } = require('./tools');
-
-type ResultObject = {
-    Contents: {
-        key: string;
-        value: string;
-    }[];
-    IsTruncated: boolean;
-    NextMarker ?: string;
-};
-
-/**
- * Handle object listing with parameters. This extends the base class DelimiterMaster
- * to return the master/current versions.
- */
-class DelimiterCurrent extends DelimiterMaster {
-    /**
-     * Delimiter listing of current versions.
-     * @param {Object}  parameters            - listing parameters
-     * @param {String}  parameters.beforeDate - limit the response to keys older than beforeDate
-     * @param {String}  parameters.excludedDataStoreName - excluded datatore name
-     * @param {Number} parameters.maxScannedLifecycleListingEntries - max number of entries to be scanned
-     * @param {RequestLogger} logger          - The logger of the request
-     * @param {String} [vFormat]              - versioning key format
-     */
-    constructor(parameters, logger, vFormat) {
-        super(parameters, logger, vFormat);
-
-        this.beforeDate = parameters.beforeDate;
-        this.excludedDataStoreName = parameters.excludedDataStoreName;
-        this.maxScannedLifecycleListingEntries = parameters.maxScannedLifecycleListingEntries;
-        this.scannedKeys = 0;
-    }
-
-    genMDParamsV0() {
-        const params = super.genMDParamsV0();
-        // lastModified and dataStoreName parameters are used by metadata that enables built-in filtering, 
-        // a feature currently exclusive to MongoDB
-        if (this.beforeDate) {
-            params.lastModified = {
-                lt: this.beforeDate,
-            };
-        }
-
-        if (this.excludedDataStoreName) {
-            params.dataStoreName = {
-                ne: this.excludedDataStoreName,
-            }
-        }
-
-        return params;
-    }
-
-    /**
-     * Parses the stringified entry's value.
-     * @param s - sringified value
-     * @return - undefined if parsing fails, otherwise it contains the parsed value.
-     */
-    _parse(s) {
-        let p;
-        try {
-            p = JSON.parse(s);
-        } catch (e: any) {
-            this.logger.warn(
-                'Could not parse Object Metadata while listing',
-                { err: e.toString() });
-        }
-        return p;
-    }
-
-    /**
-     * check if the max keys count has been reached and set the
-     * final state of the result if it is the case
-     *
-     * specialized implementation on DelimiterCurrent to also check
-     * the number of scanned keys
-     *
-     * @return {Boolean} - indicates if the iteration has to stop
-     */
-    _reachedMaxKeys(): boolean {
-        if (this.maxScannedLifecycleListingEntries && this.scannedKeys >= this.maxScannedLifecycleListingEntries) {
-            this.IsTruncated = true;
-            this.logger.info('listing stopped due to reaching the maximum scanned entries limit',
-                {
-                    maxScannedLifecycleListingEntries: this.maxScannedLifecycleListingEntries,
-                    scannedKeys: this.scannedKeys,
-                });
-            return true;
-        }
-        return super._reachedMaxKeys();
-    }
-
-    addContents(key, value) {
-        ++this.scannedKeys;
-        const parsedValue = this._parse(value);
-        // if parsing fails, skip the key.
-        if (parsedValue) {
-            const lastModified = parsedValue['last-modified'];
-            const dataStoreName = parsedValue.dataStoreName;
-            // We then check if the current version is older than the "beforeDate" and
-            // "excludedDataStoreName" is not specified or if specified and the data store name is different.
-            if ((!this.beforeDate || (lastModified && lastModified < this.beforeDate)) &&
-                (!this.excludedDataStoreName || dataStoreName !== this.excludedDataStoreName)) {
-                super.addContents(key, value);
-            }
-            // In the event of a timeout occurring before any content is added,
-            // NextMarker is updated even if the object is not eligible.
-            // It minimizes the amount of data that the client needs to re-process if the request times out.
-            this.nextMarker = key;
-        }
-    }
-
-    result(): object {
-        const result: ResultObject = {
-            Contents: this.Contents,
-            IsTruncated: this.IsTruncated,
-        };
-
-        if (this.IsTruncated) {
-            result.NextMarker = this.nextMarker;
-        }
-
-        return result;
-    }
-}
-module.exports = { DelimiterCurrent };

lib/algos/list/delimiterMaster.ts

@@ -1,620 +1,205 @@
-import {
+import { Delimiter } from './delimiter';
-    Delimiter,
+import { Version } from '../../versioning/Version';
-    FilterState,
+import { VersioningConstants as VSConst } from '../../versioning/constants';
-    FilterReturnValue,
-    DelimiterFilterStateId,
-    DelimiterFilterState_NotSkipping,
-    DelimiterFilterState_SkippingPrefix,
-    ResultObject,
-} from './delimiter';
-const Version = require('../../versioning/Version').Version;
-const VSConst = require('../../versioning/constants').VersioningConstants;
 const { BucketVersioningKeyFormat } = VSConst;
-const { FILTER_ACCEPT, FILTER_SKIP, FILTER_END, SKIP_NONE, inc } = require('./tools');
+import { FILTER_ACCEPT, FILTER_SKIP, SKIP_NONE } from './tools';
-
-import { GapSetEntry } from '../cache/GapSet';
-import { GapCacheInterface } from '../cache/GapCache';
 
 const VID_SEP = VSConst.VersionId.Separator;
 const { DbPrefixes } = VSConst;
 
-export const enum DelimiterMasterFilterStateId {
-    SkippingVersionsV0 = 101,
-    WaitVersionAfterPHDV0 = 102,
-    SkippingGapV0 = 103,
-};
-
-interface DelimiterMasterFilterState_SkippingVersionsV0 extends FilterState {
-    id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-    masterKey: string,
-};
-
-interface DelimiterMasterFilterState_WaitVersionAfterPHDV0 extends FilterState {
-    id: DelimiterMasterFilterStateId.WaitVersionAfterPHDV0,
-    masterKey: string,
-};
-
-interface DelimiterMasterFilterState_SkippingGapV0 extends FilterState {
-    id: DelimiterMasterFilterStateId.SkippingGapV0,
-};
-
-export const enum GapCachingState {
-    NoGapCache = 0, // there is no gap cache
-    UnknownGap = 1, // waiting for a cache lookup
-    GapLookupInProgress = 2, // asynchronous gap lookup in progress
-    GapCached = 3, // an upcoming or already skippable gap is cached
-    NoMoreGap = 4, // the cache doesn't have any more gaps inside the listed range
-};
-
-type GapCachingInfo_NoGapCache = {
-    state: GapCachingState.NoGapCache;
-};
-
-type GapCachingInfo_NoCachedGap = {
-    state: GapCachingState.UnknownGap
-        | GapCachingState.GapLookupInProgress
-    gapCache: GapCacheInterface;
-};
-
-type GapCachingInfo_GapCached = {
-    state: GapCachingState.GapCached;
-    gapCache: GapCacheInterface;
-    gapCached: GapSetEntry;
-};
-
-type GapCachingInfo_NoMoreGap = {
-    state: GapCachingState.NoMoreGap;
-};
-
-type GapCachingInfo = GapCachingInfo_NoGapCache
-    | GapCachingInfo_NoCachedGap
-    | GapCachingInfo_GapCached
-    | GapCachingInfo_NoMoreGap;
-
-
-export const enum GapBuildingState {
-    Disabled = 0, // no gap cache or no gap building needed (e.g. in V1 versioning format)
-    NotBuilding = 1, // not currently building a gap (i.e. not listing within a gap)
-    Building = 2, // currently building a gap (i.e. listing within a gap)
-    Expired = 3, // not allowed to build due to exposure delay timeout
-};
-
-type GapBuildingInfo_NothingToBuild = {
-    state: GapBuildingState.Disabled | GapBuildingState.Expired;
-};
-
-type GapBuildingParams = {
-    /**
-     * minimum weight for a gap to be created in the cache
-     */
-    minGapWeight: number;
-    /**
-     * trigger a cache setGap() call every N skippable keys
-     */
-    triggerSaveGapWeight: number;
-    /**
-     * timestamp to assess whether we're still inside the validity period to
-     * be allowed to build gaps
-     */
-    initTimestamp: number;
-};
-
-type GapBuildingInfo_NotBuilding = {
-    state: GapBuildingState.NotBuilding;
-    gapCache: GapCacheInterface;
-    params: GapBuildingParams;
-};
-
-type GapBuildingInfo_Building = {
-    state: GapBuildingState.Building;
-    gapCache: GapCacheInterface;
-    params: GapBuildingParams;
-    /**
-     * Gap currently being created
-     */
-    gap: GapSetEntry;
-    /**
-     * total current weight of the gap being created
-     */
-    gapWeight: number;
-};
-
-type GapBuildingInfo = GapBuildingInfo_NothingToBuild
-    | GapBuildingInfo_NotBuilding
-    | GapBuildingInfo_Building;
-
 /**
  * Handle object listing with parameters. This extends the base class Delimiter
  * to return the raw master versions of existing objects.
  */
 export class DelimiterMaster extends Delimiter {
-
+    prvKey;
-    _gapCaching: GapCachingInfo;
+    prvPHDKey;
-    _gapBuilding: GapBuildingInfo;
+    inReplayPrefix;
-    _refreshedBuildingParams: GapBuildingParams | null;
 
     /**
      * Delimiter listing of master versions.
      * @param {Object}  parameters            - listing parameters
-     * @param {String}  [parameters.delimiter]  - delimiter per amazon format
+     * @param {String}  parameters.delimiter  - delimiter per amazon format
-     * @param {String}  [parameters.prefix]     - prefix per amazon format
+     * @param {String}  parameters.prefix     - prefix per amazon format
-     * @param {String}  [parameters.marker]     - marker per amazon format
+     * @param {String}  parameters.marker     - marker per amazon format
-     * @param {Number}  [parameters.maxKeys]    - number of keys to list
+     * @param {Number}  parameters.maxKeys    - number of keys to list
-     * @param {Boolean} [parameters.v2]         - indicates whether v2 format
+     * @param {Boolean} parameters.v2         - indicates whether v2 format
-     * @param {String}  [parameters.startAfter] - marker per amazon v2 format
+     * @param {String}  parameters.startAfter - marker per amazon v2 format
-     * @param {String}  [parameters.continuationToken] - obfuscated amazon token
+     * @param {String}  parameters.continuationToken - obfuscated amazon token
      * @param {RequestLogger} logger          - The logger of the request
-     * @param {String}  [vFormat="v0"]          - versioning key format
+     * @param {String} [vFormat]              - versioning key format
      */
-    constructor(parameters, logger, vFormat?: string) {
+    constructor(parameters, logger, vFormat) {
         super(parameters, logger, vFormat);
+        // non-PHD master version or a version whose master is a PHD version
+        this.prvKey = undefined;
+        this.prvPHDKey = undefined;
+        this.inReplayPrefix = false;
 
-        if (this.vFormat === BucketVersioningKeyFormat.v0) {
+        Object.assign(
-            // override Delimiter's implementation of NotSkipping for
+            this,
-            // DelimiterMaster logic (skipping versions and special
+            {
-            // handling of delete markers and PHDs)
+                [BucketVersioningKeyFormat.v0]: {
-            this.setKeyHandler(
+                    filter: this.filterV0,
-                DelimiterFilterStateId.NotSkipping,
+                    skipping: this.skippingV0,
-                this.keyHandler_NotSkippingPrefixNorVersionsV0.bind(this));
+                },
-
+                [BucketVersioningKeyFormat.v1]: {
-            // add extra state handlers specific to DelimiterMaster with v0 format
+                    filter: this.filterV1,
-            this.setKeyHandler(
+                    skipping: this.skippingV1,
-                DelimiterMasterFilterStateId.SkippingVersionsV0,
+                },
-                this.keyHandler_SkippingVersionsV0.bind(this));
+            }[this.vFormat]
-
+        );
-            this.setKeyHandler(
-                DelimiterMasterFilterStateId.WaitVersionAfterPHDV0,
-                this.keyHandler_WaitVersionAfterPHDV0.bind(this));
-
-            this.setKeyHandler(
-                DelimiterMasterFilterStateId.SkippingGapV0,
-                this.keyHandler_SkippingGapV0.bind(this));
-
-            if (this.marker) {
-                // distinct initial state to include some special logic
-                // before the first master key is found that does not have
-                // to be checked afterwards
-                this.state = <DelimiterMasterFilterState_SkippingVersionsV0> {
-                    id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-                    masterKey: this.marker,
-                };
-            } else {
-                this.state = <DelimiterFilterState_NotSkipping> {
-                    id: DelimiterFilterStateId.NotSkipping,
-                };
-            }
-        } else {
-            // save base implementation of the `NotSkipping` state in
-            // Delimiter before overriding it with ours, to be able to call it from there
-            this.keyHandler_NotSkipping_Delimiter = this.keyHandlers[DelimiterFilterStateId.NotSkipping];
-            this.setKeyHandler(
-                DelimiterFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingPrefixNorVersionsV1.bind(this));
-        }
-        // in v1, we can directly use Delimiter's implementation,
-        // which is already set to the proper state
-
-        // default initialization of the gap cache and building states, can be
-        // set by refreshGapCache()
-        this._gapCaching = {
-            state: GapCachingState.NoGapCache,
-        };
-        this._gapBuilding = {
-            state: GapBuildingState.Disabled,
-        };
-        this._refreshedBuildingParams = null;
     }
 
     /**
-     * Get the validity period left before a refresh of the gap cache is needed
+     *  Filter to apply on each iteration for buckets in v0 format,
-     * to continue building new gaps.
+     *  based on:
-     *
+     *  - prefix
-     * @return {number|null} one of:
+     *  - delimiter
-     * - the remaining time in milliseconds in which gaps can be added to the
+     *  - maxKeys
-     *   cache before a call to refreshGapCache() is required
+     *  The marker is being handled directly by levelDB
-     * - or 0 if there is no time left and a call to refreshGapCache() is required
+     *  @param {Object} obj       - The key and value of the element
-     *   to resume caching gaps
+     *  @param {String} obj.key   - The key of the element
-     * - or null if refreshing the cache is never needed (because the gap cache
+     *  @param {String} obj.value - The value of the element
-     *   is either not available or not used)
+     *  @return {number}          - indicates if iteration should continue
      */
-    getGapBuildingValidityPeriodMs(): number | null {
+    filterV0(obj: { key: string; value: string }): number {
-        let gapBuilding;
+        let key = obj.key;
-        switch (this._gapBuilding.state) {
+        const value = obj.value;
-        case GapBuildingState.Disabled:
-            return null;
-        case GapBuildingState.Expired:
-            return 0;
-        case GapBuildingState.NotBuilding:
-            gapBuilding = <GapBuildingInfo_NotBuilding> this._gapBuilding;
-            break;
-        case GapBuildingState.Building:
-            gapBuilding = <GapBuildingInfo_Building> this._gapBuilding;
-            break;
-        }
-        const { gapCache, params } = gapBuilding;
-        const elapsedTime = Date.now() - params.initTimestamp;
-        return Math.max(gapCache.exposureDelayMs - elapsedTime, 0);
-    }
-
-    /**
-     * Refresh the gaps caching logic (gaps are series of current delete markers
-     * in V0 bucket metadata format). It has two effects:
-     *
-     * - starts exposing existing and future gaps from the cache to efficiently
-     *   skip over series of current delete markers that have been seen and cached
-     *   earlier
-     *
-     * - enables building and caching new gaps (or extend existing ones), for a
-     *   limited time period defined by the `gapCacheProxy.exposureDelayMs` value
-     *   in milliseconds. To refresh the validity period and resume building and
-     *   caching new gaps, one must restart a new listing from the database (starting
-     *   at the current listing key, included), then call refreshGapCache() again.
-     *
-     * @param {GapCacheInterface} gapCacheProxy - API proxy to the gaps cache
-     *   (the proxy should handle prefixing object keys with the bucket name)
-     * @param {number} [minGapWeight=100] - minimum weight of a gap for it to be
-     *   added in the cache
-     * @param {number} [triggerSaveGapWeight] - cumulative weight to wait for
-     *   before saving the current building gap. Cannot be greater than
-     *   `gapCacheProxy.maxGapWeight` (the value is thresholded to `maxGapWeight`
-     *   otherwise). Defaults to `gapCacheProxy.maxGapWeight / 2`.
-     * @return {undefined}
-     */
-    refreshGapCache(
-        gapCacheProxy: GapCacheInterface,
-        minGapWeight?: number,
-        triggerSaveGapWeight?: number
-    ): void {
-        if (this.vFormat !== BucketVersioningKeyFormat.v0) {
-            return;
-        }
-        if (this._gapCaching.state === GapCachingState.NoGapCache) {
-            this._gapCaching = {
-                state: GapCachingState.UnknownGap,
-                gapCache: gapCacheProxy,
-            };
-        }
-        const refreshedBuildingParams: GapBuildingParams = {
-            minGapWeight: minGapWeight || 100,
-            triggerSaveGapWeight: triggerSaveGapWeight
-                || Math.trunc(gapCacheProxy.maxGapWeight / 2),
-            initTimestamp: Date.now(),
-        };
-        if (this._gapBuilding.state === GapBuildingState.Building) {
-            // refreshed params will be applied as soon as the current building gap is saved
-            this._refreshedBuildingParams = refreshedBuildingParams;
-        } else {
-            this._gapBuilding = {
-                state: GapBuildingState.NotBuilding,
-                gapCache: gapCacheProxy,
-                params: refreshedBuildingParams,
-            };
-        }
-    }
-
-    /**
-     * Trigger a lookup of the closest upcoming or already skippable gap.
-     *
-     * @param {string} fromKey - lookup a gap not before 'fromKey'
-     * @return {undefined} - the lookup is asynchronous and its
-     * response is handled inside this function
-     */
-    _triggerGapLookup(gapCaching: GapCachingInfo_NoCachedGap, fromKey: string): void {
-        this._gapCaching = {
-            state: GapCachingState.GapLookupInProgress,
-            gapCache: gapCaching.gapCache,
-        };
-        const maxKey = this.prefix ? inc(this.prefix) : undefined;
-        gapCaching.gapCache.lookupGap(fromKey, maxKey).then(_gap => {
-            const gap = <GapSetEntry | null> _gap;
-            if (gap) {
-                this._gapCaching = {
-                    state: GapCachingState.GapCached,
-                    gapCache: gapCaching.gapCache,
-                    gapCached: gap,
-                };
-            } else {
-                this._gapCaching = {
-                    state: GapCachingState.NoMoreGap,
-                };
-            }
-        });
-    }
-
-    _checkGapOnMasterDeleteMarker(key: string): FilterReturnValue {
-        switch (this._gapBuilding.state) {
-        case GapBuildingState.Disabled:
-        case GapBuildingState.Expired:
-            break;
-        case GapBuildingState.NotBuilding:
-            this._createBuildingGap(key, 1);
-            break;
-        case GapBuildingState.Building:
-            this._updateBuildingGap(key);
-            break;
-        }
-        if (this._gapCaching.state === GapCachingState.GapCached) {
-            const { gapCached } = this._gapCaching;
-            if (key >= gapCached.firstKey) {
-                if (key <= gapCached.lastKey) {
-                    // we are inside the last looked up cached gap: transition to
-                    // 'SkippingGapV0' state
-                    this.setState(<DelimiterMasterFilterState_SkippingGapV0> {
-                        id: DelimiterMasterFilterStateId.SkippingGapV0,
-                    });
-                    // cut the current gap before skipping, it will be merged or
-                    // chained with the existing one (depending on its weight)
-                    if (this._gapBuilding.state === GapBuildingState.Building) {
-                        // substract 1 from the weight because we are going to chain this gap,
-                        // which has an overlap of one key.
-                        this._gapBuilding.gap.weight -= 1;
-                        this._cutBuildingGap();
-                    }
-                    return FILTER_SKIP;
-                }
-                // as we are past the cached gap, we will need another lookup
-                this._gapCaching = {
-                    state: GapCachingState.UnknownGap,
-                    gapCache: this._gapCaching.gapCache,
-                };
-            }
-        }
-        if (this._gapCaching.state === GapCachingState.UnknownGap) {
-            this._triggerGapLookup(this._gapCaching, key);
-        }
-        return FILTER_ACCEPT;
-    }
-
-    filter_onNewMasterKeyV0(key: string, value: string): FilterReturnValue {
-        // if this master key is a delete marker, accept it without
-        // adding the version to the contents
-        if (Version.isDeleteMarker(value)) {
-            // update the state to start skipping versions of the new master key
-            this.setState(<DelimiterMasterFilterState_SkippingVersionsV0> {
-                id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-                masterKey: key,
-            });
-            return this._checkGapOnMasterDeleteMarker(key);
-        }
-        if (Version.isPHD(value)) {
-            // master version is a PHD version: wait for the first
-            // following version that will be considered as the actual
-            // master key
-            this.setState(<DelimiterMasterFilterState_WaitVersionAfterPHDV0> {
-                id: DelimiterMasterFilterStateId.WaitVersionAfterPHDV0,
-                masterKey: key,
-            });
-            return FILTER_ACCEPT;
-        }
-        // cut the current gap as soon as a non-deleted entry is seen
-        this._cutBuildingGap();
 
         if (key.startsWith(DbPrefixes.Replay)) {
-            // skip internal replay prefix entirely
+            this.inReplayPrefix = true;
-            this.setState(<DelimiterFilterState_SkippingPrefix> {
-                id: DelimiterFilterStateId.SkippingPrefix,
-                prefix: DbPrefixes.Replay,
-            });
             return FILTER_SKIP;
         }
-        if (this._reachedMaxKeys()) {
+        this.inReplayPrefix = false;
-            return FILTER_END;
+
+        /* Skip keys not starting with the prefix or not alphabetically
+         * ordered. */
+        if (
+            (this.prefix && !key.startsWith(this.prefix)) ||
+            (typeof this[this.nextContinueMarker] === 'string' &&
+                key <= this[this.nextContinueMarker])
+        ) {
+            return FILTER_SKIP;
         }
 
-        const commonPrefix = this.addCommonPrefixOrContents(key, value);
+        /* Skip version keys (<key><versionIdSeparator><version>) if we already
-        if (commonPrefix) {
+         * have a master version. */
-            // transition into SkippingPrefix state to skip all following keys
+        const versionIdIndex = key.indexOf(VID_SEP);
-            // while they start with the same prefix
+        if (versionIdIndex >= 0) {
-            this.setState(<DelimiterFilterState_SkippingPrefix> {
+            key = key.slice(0, versionIdIndex);
-                id: DelimiterFilterStateId.SkippingPrefix,
+            /* - key === this.prvKey is triggered when a master version has
-                prefix: commonPrefix,
+             *   been accepted for this key,
-            });
+             * - key === this.NextMarker or this.NextContinueToken is triggered
+             *   when a listing page ends on an accepted obj and the next page
+             *   starts with a version of this object.
+             *   In that case prvKey is default set to undefined
+             *   in the constructor and comparing to NextMarker is the only
+             *   way to know  we should not accept this version. This test is
+             *   not redundant with the one at the beginning of this function,
+             *   we are comparing here the key without the version suffix,
+             * - key startsWith the previous NextMarker happens because we set
+             *   NextMarker to the common prefix instead of the whole key
+             *   value. (TODO: remove this test once ZENKO-1048 is fixed)
+             *   */
+            if (
+                key === this.prvKey ||
+                key === this[this.nextContinueMarker] ||
+                (this.delimiter &&
+                    key.startsWith(this[this.nextContinueMarker]))
+            ) {
+                /* master version already filtered */
+                return FILTER_SKIP;
+            }
+        }
+        if (Version.isPHD(value)) {
+            /* master version is a PHD version, we want to wait for the next
+             * one:
+             * - Set the prvKey to undefined to not skip the next version,
+             * - return accept to avoid users to skip the next values in range
+             *   (skip scan mechanism in metadata backend like Metadata or
+             *   MongoClient). */
+            this.prvKey = undefined;
+            this.prvPHDKey = key;
             return FILTER_ACCEPT;
         }
-        // update the state to start skipping versions of the new master key
-        this.setState(<DelimiterMasterFilterState_SkippingVersionsV0> {
-            id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-            masterKey: key,
-        });
-        return FILTER_ACCEPT;
-    }
-
-    keyHandler_NotSkippingPrefixNorVersionsV0(key: string, value: string): FilterReturnValue {
-        return this.filter_onNewMasterKeyV0(key, value);
-    }
-
-    filter_onNewMasterKeyV1(key: string, value: string): FilterReturnValue {
-        // if this master key is a delete marker, accept it without
-        // adding the version to the contents
         if (Version.isDeleteMarker(value)) {
+            /* This entry is a deleteMarker which has not been filtered by the
+             * version test. Either :
+             * - it is a deleteMarker on the master version, we want to SKIP
+             *   all the following entries with this key (no master version),
+             * - or a deleteMarker following a PHD (setting prvKey to undefined
+             *   when an entry is a PHD avoids the skip on version for the
+             *   next entry). In that case we expect the master version to
+             *   follow. */
+            if (key === this.prvPHDKey) {
+                this.prvKey = undefined;
                 return FILTER_ACCEPT;
             }
-        // use base Delimiter's implementation
+            this.prvKey = key;
-        return this.keyHandler_NotSkipping_Delimiter(key, value);
-    }
-
-    keyHandler_NotSkippingPrefixNorVersionsV1(key: string, value: string): FilterReturnValue {
-        return this.filter_onNewMasterKeyV1(key, value);
-    }
-
-    keyHandler_SkippingVersionsV0(key: string, value: string): FilterReturnValue {
-        /* In the SkippingVersionsV0 state, skip all version keys
-         * (<key><versionIdSeparator><version>) */
-        const versionIdIndex = key.indexOf(VID_SEP);
-        if (versionIdIndex !== -1) {
-            // version keys count in the building gap weight because they must
-            // also be listed until skipped
-            if (this._gapBuilding.state === GapBuildingState.Building) {
-                this._updateBuildingGap(key);
-            }
             return FILTER_SKIP;
         }
-        return this.filter_onNewMasterKeyV0(key, value);
-    }
 
-    keyHandler_WaitVersionAfterPHDV0(key: string, value: string): FilterReturnValue {
+        this.prvKey = key;
-        // After a PHD key is encountered, the next version key of the
+        if (this.delimiter) {
-        // same object if it exists is the new master key, hence
+            // check if the key has the delimiter
-        // consider it as such and call 'onNewMasterKeyV0' (the test
+            const baseIndex = this.prefix ? this.prefix.length : 0;
-        // 'masterKey == phdKey' is probably redundant when we already
+            const delimiterIndex = key.indexOf(this.delimiter, baseIndex);
-        // know we have a versioned key, since all objects in v0 have
+            if (delimiterIndex >= 0) {
-        // a master key, but keeping it in doubt)
+                // try to add the prefix to the list
-        const { masterKey: phdKey } = <DelimiterMasterFilterState_WaitVersionAfterPHDV0> this.state;
+                return this.addCommonPrefix(key, delimiterIndex);
-        const versionIdIndex = key.indexOf(VID_SEP);
-        if (versionIdIndex !== -1) {
-            const masterKey = key.slice(0, versionIdIndex);
-            if (masterKey === phdKey) {
-                return this.filter_onNewMasterKeyV0(masterKey, value);
             }
         }
-        return this.filter_onNewMasterKeyV0(key, value);
+        return this.addContents(key, value);
-    }
-
-    keyHandler_SkippingGapV0(key: string, value: string): FilterReturnValue {
-        const { gapCache, gapCached } = <GapCachingInfo_GapCached> this._gapCaching;
-        if (key <= gapCached.lastKey) {
-            return FILTER_SKIP;
-        }
-        this._gapCaching = {
-            state: GapCachingState.UnknownGap,
-            gapCache,
-        };
-        this.setState(<DelimiterMasterFilterState_SkippingVersionsV0> {
-            id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-        });
-        // Start a gap with weight=0 from the latest skippable key. This will
-        // allow to extend the gap just skipped with a chained gap in case
-        // other delete markers are seen after the existing gap is skipped.
-        this._createBuildingGap(gapCached.lastKey, 0, gapCached.weight);
-
-        return this.handleKey(key, value);
-    }
-
-    skippingBase(): string | undefined {
-        switch (this.state.id) {
-        case DelimiterMasterFilterStateId.SkippingVersionsV0:
-            const { masterKey } = <DelimiterMasterFilterState_SkippingVersionsV0> this.state;
-            return masterKey + inc(VID_SEP);
-
-        case DelimiterMasterFilterStateId.SkippingGapV0:
-            const { gapCached } = <GapCachingInfo_GapCached> this._gapCaching;
-            return gapCached.lastKey;
-
-        default:
-            return super.skippingBase();
-        }
-    }
-
-    result(): ResultObject {
-        this._cutBuildingGap();
-        return super.result();
-    }
-
-    _checkRefreshedBuildingParams(params: GapBuildingParams): GapBuildingParams {
-        if (this._refreshedBuildingParams) {
-            const newParams = this._refreshedBuildingParams;
-            this._refreshedBuildingParams = null;
-            return newParams;
-        }
-        return params;
     }
 
     /**
-     * Save the gap being built if allowed (i.e. still within the
+     *  Filter to apply on each iteration for buckets in v1 format,
-     * allocated exposure time window).
+     *  based on:
-     *
+     *  - prefix
-     * @return {boolean} - true if the gap was saved, false if we are
+     *  - delimiter
-     * outside the allocated exposure time window.
+     *  - maxKeys
+     *  The marker is being handled directly by levelDB
+     *  @param {Object} obj       - The key and value of the element
+     *  @param {String} obj.key   - The key of the element
+     *  @param {String} obj.value - The value of the element
+     *  @return {number}          - indicates if iteration should continue
      */
-    _saveBuildingGap(): boolean {
+    filterV1(obj: { key: string; value: string }): number {
-        const { gapCache, params, gap, gapWeight } =
+        // Filtering master keys in v1 is simply listing the master
-              <GapBuildingInfo_Building> this._gapBuilding;
+        // keys, as the state of version keys do not change the
-        const totalElapsed = Date.now() - params.initTimestamp;
+        // result, so we can use Delimiter method directly.
-        if (totalElapsed >= gapCache.exposureDelayMs) {
+        return super.filter(obj);
-            this._gapBuilding = {
-                state: GapBuildingState.Expired,
-            };
-            this._refreshedBuildingParams = null;
-            return false;
-        }
-        const { firstKey, lastKey, weight } = gap;
-        gapCache.setGap(firstKey, lastKey, weight);
-        this._gapBuilding = {
-            state: GapBuildingState.Building,
-            gapCache,
-            params: this._checkRefreshedBuildingParams(params),
-            gap: {
-                firstKey: gap.lastKey,
-                lastKey: gap.lastKey,
-                weight: 0,
-            },
-            gapWeight,
-        };
-        return true;
     }
 
-    /**
+    skippingBase() {
-     * Create a new gap to be extended afterwards
+        if (this[this.nextContinueMarker]) {
-     *
+            // next marker or next continuation token:
-     * @param {string} newKey - gap's first key
+            // - foo/ : skipping foo/
-     * @param {number} startWeight - initial weight of the building gap (usually 0 or 1)
+            // - foo  : skipping foo.
-     * @param {number} [cachedWeight] - if continuing a cached gap, weight of the existing
+            const index = this[this.nextContinueMarker].lastIndexOf(
-     *   cached portion
+                this.delimiter
-     * @return {undefined}
+            );
-     */
+            if (index === this[this.nextContinueMarker].length - 1) {
-    _createBuildingGap(newKey: string, startWeight: number, cachedWeight?: number): void {
+                return this[this.nextContinueMarker];
-        if (this._gapBuilding.state === GapBuildingState.NotBuilding) {
-            const { gapCache, params } = <GapBuildingInfo_NotBuilding> this._gapBuilding;
-            this._gapBuilding = {
-                state: GapBuildingState.Building,
-                gapCache,
-                params: this._checkRefreshedBuildingParams(params),
-                gap: {
-                    firstKey: newKey,
-                    lastKey: newKey,
-                    weight: startWeight,
-                },
-                gapWeight: (cachedWeight || 0) + startWeight,
-            };
             }
+            return this[this.nextContinueMarker] + VID_SEP;
+        }
+        return SKIP_NONE;
     }
 
-    _updateBuildingGap(newKey: string): void {
+    skippingV0() {
-        const gapBuilding = <GapBuildingInfo_Building> this._gapBuilding;
+        if (this.inReplayPrefix) {
-        const { params, gap } = gapBuilding;
+            return DbPrefixes.Replay;
-        gap.lastKey = newKey;
-        gap.weight += 1;
-        gapBuilding.gapWeight += 1;
-        // the GapCache API requires updating a gap regularly because it can only split
-        // it once per update, by the known last key. In practice the default behavior
-        // is to trigger an update after a number of keys that is half the maximum weight.
-        // It is also useful for other listings to benefit from the cache sooner.
-        if (gapBuilding.gapWeight >= params.minGapWeight &&
-            gap.weight >= params.triggerSaveGapWeight) {
-            this._saveBuildingGap();
         }
+        return this.skippingBase();
     }
 
-    _cutBuildingGap(): void {
+    skippingV1() {
-        if (this._gapBuilding.state === GapBuildingState.Building) {
+        const skipTo = this.skippingBase();
-            let gapBuilding = <GapBuildingInfo_Building> this._gapBuilding;
+        if (skipTo === SKIP_NONE) {
-            let { gapCache, params, gap, gapWeight } = gapBuilding;
+            return SKIP_NONE;
-            // only set gaps that are significant enough in weight and
-            // with a non-empty extension
-            if (gapWeight >= params.minGapWeight && gap.weight > 0) {
-                // we're done if we were not allowed to save the gap
-                if (!this._saveBuildingGap()) {
-                    return;
-                }
-                // params may have been refreshed, reload them
-                gapBuilding = <GapBuildingInfo_Building> this._gapBuilding;
-                params = gapBuilding.params;
-            }
-            this._gapBuilding = {
-                state: GapBuildingState.NotBuilding,
-                gapCache,
-                params,
-            };
         }
+        return DbPrefixes.Master + skipTo;
     }
 }

lib/algos/list/delimiterNonCurrent.js

@@ -1,202 +0,0 @@
-const { DelimiterVersions } = require('./delimiterVersions');
-const { FILTER_END, FILTER_SKIP } = require('./tools');
-
-const TRIM_METADATA_MIN_BLOB_SIZE = 10000;
-
-/**
- * Handle object listing with parameters. This extends the base class DelimiterVersions
- * to return the raw non-current versions objects.
- */
-class DelimiterNonCurrent extends DelimiterVersions {
-    /**
-     * Delimiter listing of non-current versions.
-     * @param {Object}  parameters                  - listing parameters
-     * @param {String}  parameters.keyMarker        - key marker
-     * @param {String}  parameters.versionIdMarker  - version id marker
-     * @param {String}  parameters.beforeDate       - limit the response to keys with stale date older than beforeDate.
-     * “stale date” is the date on when a version becomes non-current.
-     * @param {Number} parameters.maxScannedLifecycleListingEntries - max number of entries to be scanned
-     * @param {String} parameters.excludedDataStoreName - exclude dataStoreName matches from the versions
-     * @param {RequestLogger} logger                - The logger of the request
-     * @param {String} [vFormat]                    - versioning key format
-     */
-    constructor(parameters, logger, vFormat) {
-        super(parameters, logger, vFormat);
-
-        this.beforeDate = parameters.beforeDate;
-        this.excludedDataStoreName = parameters.excludedDataStoreName;
-        this.maxScannedLifecycleListingEntries = parameters.maxScannedLifecycleListingEntries;
-
-        // internal state
-        this.prevKey = null;
-        this.staleDate = null;
-
-        this.scannedKeys = 0;
-    }
-
-    getLastModified(value) {
-        let lastModified;
-        try {
-            const v = JSON.parse(value);
-            lastModified = v['last-modified'];
-        } catch (e) {
-            this.logger.warn('could not parse Object Metadata while listing',
-                {
-                    method: 'getLastModified',
-                    err: e.toString(),
-                });
-        }
-        return lastModified;
-    }
-
-    // Overwrite keyHandler_SkippingVersions to include the last version from the previous listing.
-    // The creation (last-modified) date of this version will be the stale date for the following version.
-    // eslint-disable-next-line camelcase
-    keyHandler_SkippingVersions(key, versionId, value) {
-        if (key === this.keyMarker) {
-            // since the nonversioned key equals the marker, there is
-            // necessarily a versionId in this key
-            const _versionId = versionId;
-            if (_versionId < this.versionIdMarker) {
-                // skip all versions until marker
-                return FILTER_SKIP;
-            }
-        }
-        this.setState({
-            id: 1 /* NotSkipping */,
-        });
-        return this.handleKey(key, versionId, value);
-    }
-
-    filter(obj) {
-        if (this.maxScannedLifecycleListingEntries && this.scannedKeys >= this.maxScannedLifecycleListingEntries) {
-            this.IsTruncated = true;
-            this.logger.info('listing stopped due to reaching the maximum scanned entries limit',
-                {
-                    maxScannedLifecycleListingEntries: this.maxScannedLifecycleListingEntries,
-                    scannedKeys: this.scannedKeys,
-                });
-            return FILTER_END;
-        }
-        ++this.scannedKeys;
-        return super.filter(obj);
-    }
-
-    /**
-     * NOTE: Each version of a specific key is sorted from the latest to the oldest
-     * thanks to the way version ids are generated.
-     * DESCRIPTION: Skip the version if it represents the master key, but keep its last-modified date in memory,
-     * which will be the stale date of the following version.
-     * The following version is pushed only:
-     * - if the "stale date" (picked up from the previous version) is available (JSON.parse has not failed),
-     * - if "beforeDate" is not specified or if specified and the "stale date" is older.
-     * - if "excludedDataStoreName" is not specified or if specified and the data store name is different
-     * The in-memory "stale date" is then updated with the version's last-modified date to be used for
-     * the following version.
-     * The process stops and returns the available results if either:
-     * - no more metadata key is left to be processed
-     * - the listing reaches the maximum number of key to be returned
-     * - the internal timeout is reached
-     *  @param {String} key   - The key to add
-     *  @param {String} versionId - The version id
-     *  @param {String} value - The value of the key
-     *  @return {undefined}
-     */
-    addVersion(key, versionId, value) {
-        this.nextKeyMarker = key;
-        this.nextVersionIdMarker = versionId;
-
-        // Skip the version if it represents the non-current version, but keep its last-modified date,
-        // which will be the stale date of the following version.
-        const isCurrentVersion = key !== this.prevKey;
-        if (isCurrentVersion) {
-            this.staleDate = this.getLastModified(value);
-            this.prevKey = key;
-            return;
-        }
-
-        // The following version is pushed only:
-        // - if the "stale date" (picked up from the previous version) is available (JSON.parse has not failed),
-        // - if "beforeDate" is not specified or if specified and the "stale date" is older.
-        // - if "excludedDataStoreName" is not specified or if specified and the data store name is different
-        let lastModified;
-        if (this.staleDate && (!this.beforeDate || this.staleDate < this.beforeDate)) {
-            const parsedValue = this._parse(value);
-            // if parsing fails, skip the key.
-            if (parsedValue) {
-                const dataStoreName = parsedValue.dataStoreName;
-                lastModified = parsedValue['last-modified'];
-                if (!this.excludedDataStoreName || dataStoreName !== this.excludedDataStoreName) {
-                    const s = this._stringify(parsedValue, this.staleDate);
-                    // check that _stringify succeeds to only push objects with a defined staleDate.
-                    if (s) {
-                        this.Versions.push({ key, value: s });
-                        ++this.keys;
-                    }
-                }
-            }
-        }
-
-        // The in-memory "stale date" is then updated with the version's last-modified date to be used for
-        // the following version.
-        this.staleDate = lastModified || this.getLastModified(value);
-
-        return;
-    }
-
-    /**
-     * Parses the stringified entry's value and remove the location property if too large.
-     * @param {string} s - sringified value
-     * @return {object} p - undefined if parsing fails, otherwise it contains the parsed value.
-     */
-    _parse(s) {
-        let p;
-        try {
-            p = JSON.parse(s);
-            if (s.length >= TRIM_METADATA_MIN_BLOB_SIZE) {
-                delete p.location;
-            }
-        } catch (e) {
-            this.logger.warn('Could not parse Object Metadata while listing', {
-                method: 'DelimiterNonCurrent._parse',
-                err: e.toString(),
-            });
-        }
-        return p;
-    }
-
-    _stringify(parsedMD, staleDate) {
-        const p = parsedMD;
-        let s = undefined;
-        p.staleDate = staleDate;
-        try {
-            s = JSON.stringify(p);
-        } catch (e) {
-            this.logger.warn('could not stringify Object Metadata while listing', {
-                method: 'DelimiterNonCurrent._stringify',
-                err: e.toString(),
-            });
-        }
-        return s;
-    }
-
-    result() {
-        const { Versions, IsTruncated, NextKeyMarker, NextVersionIdMarker } = super.result();
-
-        const result = {
-            Contents: Versions,
-            IsTruncated,
-        };
-
-        if (NextKeyMarker) {
-            result.NextKeyMarker = NextKeyMarker;
-        }
-
-        if (NextVersionIdMarker) {
-            result.NextVersionIdMarker = NextVersionIdMarker;
-        }
-
-        return result;
-    }
-}
-module.exports = { DelimiterNonCurrent };

lib/algos/list/delimiterOrphanDeleteMarker.js

@@ -1,204 +0,0 @@
-const DelimiterVersions = require('./delimiterVersions').DelimiterVersions;
-const { FILTER_END } = require('./tools');
-const TRIM_METADATA_MIN_BLOB_SIZE = 10000;
-/**
- * Handle object listing with parameters. This extends the base class DelimiterVersions
- * to return the orphan delete markers. Orphan delete markers are also
- * refered as expired object delete marker.
- * They are delete marker with zero noncurrent versions.
- */
-class DelimiterOrphanDeleteMarker extends DelimiterVersions {
-    /**
-     * Delimiter listing of orphan delete markers.
-     * @param {Object}  parameters            - listing parameters
-     * @param {String}  parameters.beforeDate - limit the response to keys older than beforeDate
-     * @param {Number} parameters.maxScannedLifecycleListingEntries - max number of entries to be scanned
-     * @param {RequestLogger} logger          - The logger of the request
-     * @param {String} [vFormat]              - versioning key format
-     */
-    constructor(parameters, logger, vFormat) {
-        const {
-            marker,
-            maxKeys,
-            prefix,
-            beforeDate,
-            maxScannedLifecycleListingEntries,
-        } = parameters;
-
-        const versionParams = {
-            // The orphan delete marker logic uses the term 'marker' instead of 'keyMarker',
-            // as the latter could suggest the presence of a 'versionIdMarker'.
-            keyMarker: marker,
-            maxKeys,
-            prefix,
-        };
-        super(versionParams, logger, vFormat);
-
-        this.maxScannedLifecycleListingEntries = maxScannedLifecycleListingEntries;
-        this.beforeDate = beforeDate;
-        // this.prevKeyName is used as a marker for the next listing when the current one reaches its entry limit.
-        // We cannot rely on this.keyName, as it contains the name of the current key.
-        // In the event of a listing interruption due to reaching the maximum scanned entries,
-        // relying on this.keyName would cause the next listing to skip the current key because S3 starts
-        // listing after the marker.
-        this.prevKeyName = null;
-        this.keyName = null;
-        this.value = null;
-        this.scannedKeys = 0;
-    }
-
-    _reachedMaxKeys() {
-        if (this.keys >= this.maxKeys) {
-            return true;
-        }
-        return false;
-    }
-
-    _addOrphan() {
-        const parsedValue = this._parse(this.value);
-        // if parsing fails, skip the key.
-        if (parsedValue) {
-            const lastModified = parsedValue['last-modified'];
-            const isDeleteMarker = parsedValue.isDeleteMarker;
-            // We then check if the orphan version is a delete marker and if it is older than the "beforeDate"
-            if ((!this.beforeDate || (lastModified && lastModified < this.beforeDate)) && isDeleteMarker) {
-                // Prefer returning an untrimmed data rather than stopping the service in case of parsing failure.
-                const s = this._stringify(parsedValue) || this.value;
-                this.Versions.push({ key: this.keyName, value: s });
-                this.nextKeyMarker = this.keyName;
-                ++this.keys;
-            }
-        }
-    }
-
-    /**
-     * Parses the stringified entry's value and remove the location property if too large.
-     * @param {string} s - sringified value
-     * @return {object} p - undefined if parsing fails, otherwise it contains the parsed value.
-     */
-    _parse(s) {
-        let p;
-        try {
-            p = JSON.parse(s);
-            if (s.length >= TRIM_METADATA_MIN_BLOB_SIZE) {
-                delete p.location;
-            }
-        } catch (e) {
-            this.logger.warn('Could not parse Object Metadata while listing', {
-                method: 'DelimiterOrphanDeleteMarker._parse',
-                err: e.toString(),
-            });
-        }
-        return p;
-    }
-
-    _stringify(value) {
-        const p = value;
-        let s = undefined;
-        try {
-            s = JSON.stringify(p);
-        } catch (e) {
-            this.logger.warn('could not stringify Object Metadata while listing',
-                {
-                    method: 'DelimiterOrphanDeleteMarker._stringify',
-                    err: e.toString(),
-                });
-        }
-        return s;
-    }
-    /**
-     * The purpose of _isMaxScannedEntriesReached is to restrict the number of scanned entries,
-     * thus controlling resource overhead (CPU...).
-     * @return {boolean} isMaxScannedEntriesReached - true if the maximum limit on the number
-     * of entries scanned has been reached, false otherwise.
-    */
-    _isMaxScannedEntriesReached() {
-        return this.maxScannedLifecycleListingEntries && this.scannedKeys >= this.maxScannedLifecycleListingEntries;
-    }
-
-    filter(obj) {
-        if (this._isMaxScannedEntriesReached()) {
-            this.nextKeyMarker = this.prevKeyName;
-            this.IsTruncated = true;
-            this.logger.info('listing stopped due to reaching the maximum scanned entries limit',
-                {
-                    maxScannedLifecycleListingEntries: this.maxScannedLifecycleListingEntries,
-                    scannedKeys: this.scannedKeys,
-                });
-            return FILTER_END;
-        }
-        ++this.scannedKeys;
-        return super.filter(obj);
-    }
-
-    /**
-     * NOTE: Each version of a specific key is sorted from the latest to the oldest
-     * thanks to the way version ids are generated.
-     * DESCRIPTION: For a given key, the latest version is kept in memory since it is the current version.
-     * If the following version reference a new key, it means that the previous one was an orphan version.
-     * We then check if the orphan version is a delete marker and if it is older than the "beforeDate"
-     * The process stops and returns the available results if either:
-     * - no more metadata key is left to be processed
-     * - the listing reaches the maximum number of key to be returned
-     * - the internal timeout is reached
-     * NOTE: we cannot leverage MongoDB to list keys older than "beforeDate"
-     * because then we will not be able to assess its orphanage.
-     *  @param {String} key   - The object key.
-     * @param {String} versionId   - The object version id.
-     *  @param {String} value - The value of the key
-     *  @return {undefined}
-     */
-    addVersion(key, versionId, value) {
-        // For a given key, the youngest version is kept in memory since it represents the current version.
-        if (key !== this.keyName) {
-            // If this.value is defined, it means that <this.keyName, this.value> pair is "allowed" to be an orphan.
-            if (this.value) {
-                this._addOrphan();
-            }
-            this.prevKeyName = this.keyName;
-            this.keyName = key;
-            this.value = value;
-
-            return;
-        }
-
-        // If the key is not the current version, we can skip it in the next listing
-        // in the case where the current listing is interrupted due to reaching the maximum scanned entries.
-        this.prevKeyName = key;
-        this.keyName = key;
-        this.value = null;
-
-        return;
-    }
-
-    result() {
-        // Only check for remaining last orphan delete marker if the listing is not interrupted.
-        // This will help avoid false positives.
-        if (!this._isMaxScannedEntriesReached()) {
-            // The following check makes sure the last orphan delete marker is not forgotten.
-            if (this.keys < this.maxKeys) {
-                if (this.value) {
-                    this._addOrphan();
-                }
-            // The following make sure that if makeKeys is reached, isTruncated is set to true.
-            // We moved the "isTruncated" from _reachedMaxKeys to make sure we take into account the last entity
-            // if listing is truncated right before the last entity and the last entity is a orphan delete marker.
-            } else {
-                this.IsTruncated = this.maxKeys > 0;
-            }
-        }
-
-        const result = {
-            Contents: this.Versions,
-            IsTruncated: this.IsTruncated,
-        };
-
-        if (this.IsTruncated) {
-            result.NextMarker = this.nextKeyMarker;
-        }
-
-        return result;
-    }
-}
-
-module.exports = { DelimiterOrphanDeleteMarker };

lib/algos/list/delimiterVersions.ts

@@ -1,61 +1,17 @@
-'use strict'; // eslint-disable-line strict
+import { Delimiter } from './delimiter';
-
+import { Version } from '../../versioning/Version';
-const Extension = require('./Extension').default;
+import { VersioningConstants as VSConst } from '../../versioning/constants';
-
 import {
-    FilterState,
+    inc,
-    FilterReturnValue,
+    FILTER_END,
-} from './delimiter';
+    FILTER_ACCEPT,
-
+    FILTER_SKIP,
-const Version = require('../../versioning/Version').Version;
+    SKIP_NONE,
-const VSConst = require('../../versioning/constants').VersioningConstants;
+} from './tools';
-const { inc, FILTER_END, FILTER_ACCEPT, FILTER_SKIP, SKIP_NONE } =
-    require('./tools');
 
 const VID_SEP = VSConst.VersionId.Separator;
 const { DbPrefixes, BucketVersioningKeyFormat } = VSConst;
 
-export const enum DelimiterVersionsFilterStateId {
-    NotSkipping = 1,
-    SkippingPrefix = 2,
-    SkippingVersions = 3,
-};
-
-export interface DelimiterVersionsFilterState_NotSkipping extends FilterState {
-    id: DelimiterVersionsFilterStateId.NotSkipping,
-};
-
-export interface DelimiterVersionsFilterState_SkippingPrefix extends FilterState {
-    id: DelimiterVersionsFilterStateId.SkippingPrefix,
-    prefix: string;
-};
-
-export interface DelimiterVersionsFilterState_SkippingVersions extends FilterState {
-    id: DelimiterVersionsFilterStateId.SkippingVersions,
-    gt: string;
-};
-
-type KeyHandler = (key: string, versionId: string | undefined, value: string) => FilterReturnValue;
-
-type ResultObject = {
-    CommonPrefixes: string[],
-    Versions: {
-        key: string;
-        value: string;
-        versionId: string;
-    }[];
-    IsTruncated: boolean;
-    Delimiter ?: string;
-    NextKeyMarker ?: string;
-    NextVersionIdMarker ?: string;
-};
-
-type GenMDParamsItem = {
-    gt ?: string,
-    gte ?: string,
-    lt ?: string,
-};
-
 /**
  * Handle object listing with parameters
  *
@@ -68,101 +24,66 @@ type GenMDParamsItem = {
  * @prop {String|undefined} prefix     - prefix per amazon format
  * @prop {Number} maxKeys              - number of keys to list
  */
-export class DelimiterVersions extends Extension {
+export class DelimiterVersions extends Delimiter {
-
+    CommonPrefixes: string[];
-    state: FilterState;
+    Contents: string[];
-    keyHandlers: { [id: number]: KeyHandler };
+    IsTruncated: boolean;
+    NextMarker?: string;
+    keys: number;
+    delimiter?: string;
+    prefix?: string;
+    maxKeys: number;
 
     constructor(parameters, logger, vFormat) {
-        super(parameters, logger);
+        super(parameters, logger, vFormat);
-        // original listing parameters
-        this.delimiter = parameters.delimiter;
-        this.prefix = parameters.prefix;
-        this.maxKeys = parameters.maxKeys || 1000;
         // specific to version listing
         this.keyMarker = parameters.keyMarker;
         this.versionIdMarker = parameters.versionIdMarker;
         // internal state
         this.masterKey = undefined;
         this.masterVersionId = undefined;
-        this.nullKey = null;
-        this.vFormat = vFormat || BucketVersioningKeyFormat.v0;
         // listing results
-        this.CommonPrefixes = [];
+        this.NextMarker = parameters.keyMarker;
-        this.Versions = [];
+        this.NextVersionIdMarker = undefined;
-        this.IsTruncated = false;
+        this.inReplayPrefix = false;
-        this.nextKeyMarker = parameters.keyMarker;
-        this.nextVersionIdMarker = undefined;
 
-        this.keyHandlers = {};
+        Object.assign(
-
+            this,
-        Object.assign(this, {
+            {
                 [BucketVersioningKeyFormat.v0]: {
                     genMDParams: this.genMDParamsV0,
-                getObjectKey: this.getObjectKeyV0,
+                    filter: this.filterV0,
                     skipping: this.skippingV0,
                 },
                 [BucketVersioningKeyFormat.v1]: {
                     genMDParams: this.genMDParamsV1,
-                getObjectKey: this.getObjectKeyV1,
+                    filter: this.filterV1,
                     skipping: this.skippingV1,
                 },
-        }[this.vFormat]);
+            }[this.vFormat]
-
+        );
-        if (this.vFormat === BucketVersioningKeyFormat.v0) {
-            this.setKeyHandler(
-                DelimiterVersionsFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingV0.bind(this));
-        } else {
-            this.setKeyHandler(
-                DelimiterVersionsFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingV1.bind(this));
-        }
-        this.setKeyHandler(
-            DelimiterVersionsFilterStateId.SkippingPrefix,
-            this.keyHandler_SkippingPrefix.bind(this));
-
-        this.setKeyHandler(
-            DelimiterVersionsFilterStateId.SkippingVersions,
-            this.keyHandler_SkippingVersions.bind(this));
-
-        if (this.versionIdMarker) {
-            this.state = <DelimiterVersionsFilterState_SkippingVersions> {
-                id: DelimiterVersionsFilterStateId.SkippingVersions,
-                gt: `${this.keyMarker}${VID_SEP}${this.versionIdMarker}`,
-            };
-        } else {
-            this.state = <DelimiterVersionsFilterState_NotSkipping> {
-                id: DelimiterVersionsFilterStateId.NotSkipping,
-            };
-        }
     }
 
     genMDParamsV0() {
-        const params: GenMDParamsItem = {};
+        const params = {};
-        if (this.prefix) {
+        if (this.parameters.prefix) {
-            params.gte = this.prefix;
+            params.gte = this.parameters.prefix;
-            params.lt = inc(this.prefix);
+            params.lt = inc(this.parameters.prefix);
         }
-        if (this.keyMarker && this.delimiter) {
+        if (this.parameters.keyMarker) {
-            const commonPrefix = this.getCommonPrefix(this.keyMarker);
+            if (params.gte && params.gte > this.parameters.keyMarker) {
-            if (commonPrefix) {
+                return params;
-                const afterPrefix = inc(commonPrefix);
-                if (!params.gte || afterPrefix > params.gte) {
-                    params.gte = afterPrefix;
             }
-            }
-        }
-        if (this.keyMarker && (!params.gte || this.keyMarker >= params.gte)) {
             delete params.gte;
-            if (this.versionIdMarker) {
+            if (this.parameters.versionIdMarker) {
-                // start from the beginning of versions so we can
+                // versionIdMarker should always come with keyMarker
-                // check if there's a null key and fetch it
+                // but may not be the other way around
-                // (afterwards, we can skip the rest of versions until
+                params.gt =
-                // we reach versionIdMarker)
+                    this.parameters.keyMarker +
-                params.gte = `${this.keyMarker}${VID_SEP}`;
+                    VID_SEP +
+                    this.parameters.versionIdMarker;
             } else {
-                params.gt = `${this.keyMarker}${inc(VID_SEP)}`;
+                params.gt = inc(this.parameters.keyMarker + VID_SEP);
             }
         }
         return params;
@@ -171,41 +92,44 @@ export class DelimiterVersions extends Extension {
     genMDParamsV1() {
         // return an array of two listing params sets to ask for
         // synchronized listing of M and V ranges
-        const v0Params: GenMDParamsItem = this.genMDParamsV0();
+        const params = [{}, {}];
-        const mParams: GenMDParamsItem = {};
+        if (this.parameters.prefix) {
-        const vParams: GenMDParamsItem = {};
+            params[0].gte = DbPrefixes.Master + this.parameters.prefix;
-        if (v0Params.gt) {
+            params[0].lt = DbPrefixes.Master + inc(this.parameters.prefix);
-            mParams.gt = `${DbPrefixes.Master}${v0Params.gt}`;
+            params[1].gte = DbPrefixes.Version + this.parameters.prefix;
-            vParams.gt = `${DbPrefixes.Version}${v0Params.gt}`;
+            params[1].lt = DbPrefixes.Version + inc(this.parameters.prefix);
-        } else if (v0Params.gte) {
-            mParams.gte = `${DbPrefixes.Master}${v0Params.gte}`;
-            vParams.gte = `${DbPrefixes.Version}${v0Params.gte}`;
         } else {
-            mParams.gte = DbPrefixes.Master;
+            params[0].gte = DbPrefixes.Master;
-            vParams.gte = DbPrefixes.Version;
+            params[0].lt = inc(DbPrefixes.Master); // stop after the last master key
+            params[1].gte = DbPrefixes.Version;
+            params[1].lt = inc(DbPrefixes.Version); // stop after the last version key
         }
-        if (v0Params.lt) {
+        if (this.parameters.keyMarker) {
-            mParams.lt = `${DbPrefixes.Master}${v0Params.lt}`;
+            if (
-            vParams.lt = `${DbPrefixes.Version}${v0Params.lt}`;
+                params[1].gte <=
+                DbPrefixes.Version + this.parameters.keyMarker
+            ) {
+                delete params[0].gte;
+                delete params[1].gte;
+                params[0].gt =
+                    DbPrefixes.Master +
+                    inc(this.parameters.keyMarker + VID_SEP);
+                if (this.parameters.versionIdMarker) {
+                    // versionIdMarker should always come with keyMarker
+                    // but may not be the other way around
+                    params[1].gt =
+                        DbPrefixes.Version +
+                        this.parameters.keyMarker +
+                        VID_SEP +
+                        this.parameters.versionIdMarker;
                 } else {
-            mParams.lt = inc(DbPrefixes.Master);
+                    params[1].gt =
-            vParams.lt = inc(DbPrefixes.Version);
+                        DbPrefixes.Version +
+                        inc(this.parameters.keyMarker + VID_SEP);
                 }
-        return [mParams, vParams];
             }
-
-    /**
-     * check if the max keys count has been reached and set the
-     * final state of the result if it is the case
-     * @return {Boolean} - indicates if the iteration has to stop
-     */
-    _reachedMaxKeys(): boolean {
-        if (this.keys >= this.maxKeys) {
-            // In cases of maxKeys <= 0 -> IsTruncated = false
-            this.IsTruncated = this.maxKeys > 0;
-            return true;
         }
-        return false;
+        return params;
     }
 
     /**
@@ -219,122 +143,44 @@ export class DelimiterVersions extends Extension {
      *   * -1 if master key < version key
      *   * 1 if master key > version key
      */
-    compareObjects(masterObj, versionObj) {
+    compareObjects(masterObj, versionObj): number {
         const masterKey = masterObj.key.slice(DbPrefixes.Master.length);
         const versionKey = versionObj.key.slice(DbPrefixes.Version.length);
         return masterKey < versionKey ? -1 : 1;
     }
 
-    /**
-     * Parse a listing key into its nonversioned key and version ID components
-     *
-     * @param {string} key - full listing key
-     * @return {object} obj
-     * @return {string} obj.key - nonversioned part of key
-     * @return {string} [obj.versionId] - version ID in the key
-     */
-    parseKey(fullKey: string): { key: string, versionId ?: string } {
-        const versionIdIndex = fullKey.indexOf(VID_SEP);
-        if (versionIdIndex === -1) {
-            return { key: fullKey };
-        }
-        const nonversionedKey: string = fullKey.slice(0, versionIdIndex);
-        let versionId: string = fullKey.slice(versionIdIndex + 1);
-        return { key: nonversionedKey, versionId };
-    }
-
-    /**
-     * Include a key in the listing output, in the Versions or CommonPrefix result
-     *
-     * @param {string} key - key (without version ID)
-     * @param {string} versionId - version ID
-     * @param {string} value - metadata value
-     * @return {undefined}
-     */
-    addKey(key: string, versionId: string, value: string) {
-        // add the subprefix to the common prefixes if the key has the delimiter
-        const commonPrefix = this.getCommonPrefix(key);
-        if (commonPrefix) {
-            this.addCommonPrefix(commonPrefix);
-            // transition into SkippingPrefix state to skip all following keys
-            // while they start with the same prefix
-            this.setState(<DelimiterVersionsFilterState_SkippingPrefix> {
-                id: DelimiterVersionsFilterStateId.SkippingPrefix,
-                prefix: commonPrefix,
-            });
-        } else {
-            this.addVersion(key, versionId, value);
-        }
-    }
-
     /**
      *  Add a (key, versionId, value) tuple to the listing.
      *  Set the NextMarker to the current key
      *  Increment the keys counter
-     *  @param {String} key         - The key to add
+     *  @param {object} obj             - the entry to add to the listing result
-     *  @param {String} versionId   - versionId
+     *  @param {String} obj.key         - The key to add
-     *  @param {String} value       - The value of the key
+     *  @param {String} obj.versionId   - versionId
-     *  @return {undefined}
+     *  @param {String} obj.value       - The value of the key
+     *  @return {Boolean} - indicates if iteration should continue
      */
-    addVersion(key: string, versionId: string, value: string) {
+    addContents(obj: {
-        this.Versions.push({
+        key: string;
-            key,
+        versionId: string;
-            versionId,
+        value: string;
-            value: this.trimMetadata(value),
+    }): boolean {
+        if (this._reachedMaxKeys()) {
+            return FILTER_END;
+        }
+        this.Contents.push({
+            key: obj.key,
+            value: this.trimMetadata(obj.value),
+            versionId: obj.versionId,
         });
-        this.nextKeyMarker = key;
+        this.NextMarker = obj.key;
-        this.nextVersionIdMarker = versionId;
+        this.NextVersionIdMarker = obj.versionId;
         ++this.keys;
-    }
+        return FILTER_ACCEPT;
-
-    getCommonPrefix(key: string): string | undefined {
-        if (!this.delimiter) {
-            return undefined;
-        }
-        const baseIndex = this.prefix ? this.prefix.length : 0;
-        const delimiterIndex = key.indexOf(this.delimiter, baseIndex);
-        if (delimiterIndex === -1) {
-            return undefined;
-        }
-        return key.substring(0, delimiterIndex + this.delimiter.length);
     }
 
     /**
-     * Add a Common Prefix in the list
+     *  Filter to apply on each iteration if bucket is in v0
-     * @param {String} commonPrefix   - common prefix to add
+     *  versioning key format, based on:
-     * @return {undefined}
-     */
-    addCommonPrefix(commonPrefix: string): void {
-        // add the new prefix to the list
-        this.CommonPrefixes.push(commonPrefix);
-        ++this.keys;
-        this.nextKeyMarker = commonPrefix;
-        this.nextVersionIdMarker = undefined;
-    }
-
-    /**
-     * Cache the current null key, to save it for outputting it later at
-     * the correct position
-     *
-     * @param {String} key        - nonversioned key of the null key
-     * @param {String} versionId  - real version ID of the null key
-     * @param {String} value      - value of the null key
-     * @return {undefined}
-     */
-    cacheNullKey(key: string, versionId: string, value: string): void {
-        this.nullKey = { key, versionId, value };
-    }
-
-    getObjectKeyV0(obj: { key: string }): string {
-        return obj.key;
-    }
-
-    getObjectKeyV1(obj: { key: string }): string {
-        return obj.key.slice(DbPrefixes.Master.length);
-    }
-
-    /**
-     *  Filter to apply on each iteration, based on:
      *  - prefix
      *  - delimiter
      *  - maxKeys
@@ -344,147 +190,100 @@ export class DelimiterVersions extends Extension {
      *  @param {String} obj.value - The value of the element
      *  @return {number}          - indicates if iteration should continue
      */
-    filter(obj: { key: string, value: string }): FilterReturnValue {
+    filterV0(obj: { key: string; value: string }): number {
-        const key = this.getObjectKey(obj);
+        if (obj.key.startsWith(DbPrefixes.Replay)) {
-        const value = obj.value;
+            this.inReplayPrefix = true;
-
-        const { key: nonversionedKey, versionId: keyVersionId } = this.parseKey(key);
-        if (this.nullKey) {
-            if (this.nullKey.key !== nonversionedKey
-                || this.nullKey.versionId < <string> keyVersionId) {
-                this.handleKey(
-                    this.nullKey.key, this.nullKey.versionId, this.nullKey.value);
-                this.nullKey = null;
-            }
-        }
-        if (keyVersionId === '') {
-            // null key
-            this.cacheNullKey(nonversionedKey, Version.from(value).getVersionId(), value);
-            if (this.state.id === DelimiterVersionsFilterStateId.SkippingVersions) {
             return FILTER_SKIP;
         }
+        this.inReplayPrefix = false;
+
+        if (Version.isPHD(obj.value)) {
+            // return accept to avoid skipping the next values in range
             return FILTER_ACCEPT;
         }
-        return this.handleKey(nonversionedKey, keyVersionId, value);
+        return this.filterCommon(obj.key, obj.value);
     }
 
-    setState(state: FilterState): void {
+    /**
-        this.state = state;
+     *  Filter to apply on each iteration if bucket is in v1
+     *  versioning key format, based on:
+     *  - prefix
+     *  - delimiter
+     *  - maxKeys
+     *  The marker is being handled directly by levelDB
+     *  @param {Object} obj       - The key and value of the element
+     *  @param {String} obj.key   - The key of the element
+     *  @param {String} obj.value - The value of the element
+     *  @return {number}          - indicates if iteration should continue
+     */
+    filterV1(obj: { key: string; value: string }): number {
+        // this function receives both M and V keys, but their prefix
+        // length is the same so we can remove their prefix without
+        // looking at the type of key
+        return this.filterCommon(
+            obj.key.slice(DbPrefixes.Master.length),
+            obj.value
+        );
     }
 
-    setKeyHandler(stateId: number, keyHandler: KeyHandler): void {
+    filterCommon(key, value) {
-        this.keyHandlers[stateId] = keyHandler;
+        if (this.prefix && !key.startsWith(this.prefix)) {
-    }
-
-    handleKey(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        return this.keyHandlers[this.state.id](key, versionId, value);
-    }
-
-    keyHandler_NotSkippingV0(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        if (key.startsWith(DbPrefixes.Replay)) {
-            // skip internal replay prefix entirely
-            this.setState(<DelimiterVersionsFilterState_SkippingPrefix> {
-                id: DelimiterVersionsFilterStateId.SkippingPrefix,
-                prefix: DbPrefixes.Replay,
-            });
             return FILTER_SKIP;
         }
-        if (Version.isPHD(value)) {
+        let nonversionedKey;
-            return FILTER_ACCEPT;
+        let versionId = undefined;
-        }
+        const versionIdIndex = key.indexOf(VID_SEP);
-        return this.filter_onNewKey(key, versionId, value);
+        if (versionIdIndex < 0) {
-    }
+            nonversionedKey = key;
-
-    keyHandler_NotSkippingV1(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        // NOTE: this check on PHD is only useful for Artesca, S3C
-        // does not use PHDs in V1 format
-        if (Version.isPHD(value)) {
-            return FILTER_ACCEPT;
-        }
-        return this.filter_onNewKey(key, versionId, value);
-    }
-
-    filter_onNewKey(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        if (this._reachedMaxKeys()) {
-            return FILTER_END;
-        }
-        if (versionId === undefined) {
             this.masterKey = key;
             this.masterVersionId = Version.from(value).getVersionId() || 'null';
-            this.addKey(this.masterKey, this.masterVersionId, value);
+            versionId = this.masterVersionId;
         } else {
-            if (this.masterKey === key && this.masterVersionId === versionId) {
+            nonversionedKey = key.slice(0, versionIdIndex);
-                // do not add a version key if it is the master version
+            versionId = key.slice(versionIdIndex + 1);
-                return FILTER_ACCEPT;
+            // skip a version key if it is the master version
-            }
+            if (
-            this.addKey(key, versionId, value);
+                this.masterKey === nonversionedKey &&
-        }
+                this.masterVersionId === versionId
-        return FILTER_ACCEPT;
+            ) {
-    }
-
-    keyHandler_SkippingPrefix(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        const { prefix } = <DelimiterVersionsFilterState_SkippingPrefix> this.state;
-        if (key.startsWith(prefix)) {
                 return FILTER_SKIP;
             }
-        this.setState(<DelimiterVersionsFilterState_NotSkipping> {
+            this.masterKey = undefined;
-            id: DelimiterVersionsFilterStateId.NotSkipping,
+            this.masterVersionId = undefined;
-        });
-        return this.handleKey(key, versionId, value);
         }
-
+        if (this.delimiter) {
-    keyHandler_SkippingVersions(key: string, versionId: string | undefined, value: string): FilterReturnValue {
+            const baseIndex = this.prefix ? this.prefix.length : 0;
-        if (key === this.keyMarker) {
+            const delimiterIndex = nonversionedKey.indexOf(
-            // since the nonversioned key equals the marker, there is
+                this.delimiter,
-            // necessarily a versionId in this key
+                baseIndex
-            const _versionId = <string> versionId;
+            );
-            if (_versionId < this.versionIdMarker) {
+            if (delimiterIndex >= 0) {
-                // skip all versions until marker
+                return this.addCommonPrefix(nonversionedKey, delimiterIndex);
-                return FILTER_SKIP;
-            }
-            if (_versionId === this.versionIdMarker) {
-                // nothing left to skip, so return ACCEPT, but don't add this version
-                return FILTER_ACCEPT;
             }
         }
-        this.setState(<DelimiterVersionsFilterState_NotSkipping> {
+        return this.addContents({ key: nonversionedKey, value, versionId });
-            id: DelimiterVersionsFilterStateId.NotSkipping,
-        });
-        return this.handleKey(key, versionId, value);
-    }
-
-    skippingBase(): string | undefined {
-        switch (this.state.id) {
-        case DelimiterVersionsFilterStateId.SkippingPrefix:
-            const { prefix } = <DelimiterVersionsFilterState_SkippingPrefix> this.state;
-            return inc(prefix);
-
-        case DelimiterVersionsFilterStateId.SkippingVersions:
-            const { gt } = <DelimiterVersionsFilterState_SkippingVersions> this.state;
-            // the contract of skipping() is to return the first key
-            // that can be skipped to, so adding a null byte to skip
-            // over the existing versioned key set in 'gt'
-            return `${gt}\0`;
-
-        default:
-            return SKIP_NONE;
-        }
     }
 
     skippingV0() {
-        return this.skippingBase();
+        if (this.inReplayPrefix) {
+            return DbPrefixes.Replay;
+        }
+        if (this.NextMarker) {
+            const index = this.NextMarker.lastIndexOf(this.delimiter);
+            if (index === this.NextMarker.length - 1) {
+                return this.NextMarker;
+            }
+        }
+        return SKIP_NONE;
     }
 
     skippingV1() {
-        const skipTo = this.skippingBase();
+        const skipV0 = this.skippingV0();
-        if (skipTo === SKIP_NONE) {
+        if (skipV0 === SKIP_NONE) {
             return SKIP_NONE;
         }
         // skip to the same object key in both M and V range listings
-        return [
+        return [DbPrefixes.Master + skipV0, DbPrefixes.Version + skipV0];
-            `${DbPrefixes.Master}${skipTo}`,
-            `${DbPrefixes.Version}${skipTo}`,
-        ];
     }
 
     /**
@@ -494,42 +293,19 @@ export class DelimiterVersions extends Extension {
      *  @return {Object} - following amazon format
      */
     result() {
-        // Add the last null key if still in cache (when it is the
+        /* NextMarker is only provided when delimiter is used.
-        // last version of the last key)
+         * specified in v1 listing documentation
-        //
+         * http://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGET.html
-        // NOTE: _reachedMaxKeys sets IsTruncated to true when it
+         */
-        // returns true. Here we want this because either:
+        return {
-        //
-        // - we did not reach the max keys yet so the result is not
-        // - truncated, and there is still room for the null key in
-        // - the results
-        //
-        // - OR we reached it already while having to process a new
-        //   key (so the result is truncated even without the null key)
-        //
-        // - OR we are *just* below the limit but the null key to add
-        //   does not fit, so we know the result is now truncated
-        //   because there remains the null key to be output.
-        //
-        if (this.nullKey) {
-            this.handleKey(this.nullKey.key, this.nullKey.versionId, this.nullKey.value);
-        }
-        const result: ResultObject = {
             CommonPrefixes: this.CommonPrefixes,
-            Versions: this.Versions,
+            Versions: this.Contents,
             IsTruncated: this.IsTruncated,
+            NextKeyMarker: this.IsTruncated ? this.NextMarker : undefined,
+            NextVersionIdMarker: this.IsTruncated
+                ? this.NextVersionIdMarker
+                : undefined,
+            Delimiter: this.delimiter,
         };
-        if (this.delimiter) {
-            result.Delimiter = this.delimiter;
-        }
-        if (this.IsTruncated) {
-            result.NextKeyMarker = this.nextKeyMarker;
-            if (this.nextVersionIdMarker) {
-                result.NextVersionIdMarker = this.nextVersionIdMarker;
-            }
-        };
-        return result;
     }
 }
-
-module.exports = { DelimiterVersions };

lib/algos/list/exportAlgos.js

@@ -1,12 +0,0 @@
-module.exports = {
-    Basic: require('./basic').List,
-    Delimiter: require('./delimiter').Delimiter,
-    DelimiterVersions: require('./delimiterVersions')
-        .DelimiterVersions,
-    DelimiterMaster: require('./delimiterMaster')
-        .DelimiterMaster,
-    MPU: require('./MPU').MultipartUploads,
-    DelimiterCurrent: require('./delimiterCurrent').DelimiterCurrent,
-    DelimiterNonCurrent: require('./delimiterNonCurrent').DelimiterNonCurrent,
-    DelimiterOrphanDeleteMarker: require('./delimiterOrphanDeleteMarker').DelimiterOrphanDeleteMarker,
-};

lib/algos/list/exportAlgos.ts

@@ -0,0 +1,5 @@
+export { List as Basic } from './basic';
+export { Delimiter } from './delimiter';
+export { DelimiterVersions } from './delimiterVersions';
+export { DelimiterMaster } from './delimiterMaster';
+export { MultipartUploads as MPU } from './MPU';

lib/algos/list/skip.ts

@@ -1,21 +1,25 @@
-const assert = require('assert');
+import assert from 'assert';
-
+import { FILTER_END, FILTER_SKIP, SKIP_NONE } from './tools';
-const { FILTER_END, FILTER_SKIP, SKIP_NONE } = require('./tools');
-
 
 const MAX_STREAK_LENGTH = 100;
 
 /**
  * Handle the filtering and the skip mechanism of a listing result.
  */
-class Skip {
+export class Skip {
+    extension;
+    gteParams;
+    listingEndCb;
+    skipRangeCb;
+    streakLength;
+
     /**
      * @param {Object} params           - skip parameters
      * @param {Object} params.extension - delimiter extension used (required)
      * @param {String} params.gte       - current range gte (greater than or
      *                                    equal) used by the client code
      */
-    constructor(params) {
+    constructor(params: { extension: any; gte: string }) {
         assert(params.extension);
 
         this.extension = params.extension;
@@ -47,27 +51,22 @@ class Skip {
      * This function calls the listing end or the skip range callbacks if
      * needed.
      */
-    filter(entry) {
+    filter(entry): void {
         assert(this.listingEndCb);
         assert(this.skipRangeCb);
 
         const filteringResult = this.extension.filter(entry);
-        const skipTo = this.extension.skipping();
+        const skippingRange = this.extension.skipping();
 
         if (filteringResult === FILTER_END) {
             this.listingEndCb();
-        } else if (filteringResult === FILTER_SKIP
+        } else if (
-                   && skipTo !== SKIP_NONE) {
+            filteringResult === FILTER_SKIP &&
+            skippingRange !== SKIP_NONE
+        ) {
             if (++this.streakLength >= MAX_STREAK_LENGTH) {
-                let newRange;
+                const newRange = this._inc(skippingRange);
-                if (Array.isArray(skipTo)) {
+
-                    newRange = [];
-                    for (let i = 0; i < skipTo.length; ++i) {
-                        newRange.push(skipTo[i]);
-                    }
-                } else {
-                    newRange = skipTo;
-                }
                 /* Avoid to loop on the same range again and again. */
                 if (newRange === this.gteParams) {
                     this.streakLength = 1;
@@ -79,7 +78,14 @@ class Skip {
             this.streakLength = 0;
         }
     }
+
+    _inc(str: string) {
+        if (!str) {
+            return str;
+        }
+        const lastCharValue = str.charCodeAt(str.length - 1);
+        const lastCharNewValue = String.fromCharCode(lastCharValue + 1);
+
+        return `${str.slice(0, str.length - 1)}${lastCharNewValue}`;
+    }
 }
-
-
-module.exports = Skip;

lib/algos/list/tools.ts

@@ -1,10 +1,11 @@
-const { DbPrefixes } = require('../../versioning/constants').VersioningConstants;
+import { VersioningConstants as VSConst } from '../../versioning/constants';
+const { DbPrefixes } = VSConst
 
 // constants for extensions
-const SKIP_NONE = undefined; // to be inline with the values of NextMarker
+export const SKIP_NONE = undefined; // to be inline with the values of NextMarker
-const FILTER_ACCEPT = 1;
+export const FILTER_ACCEPT = 1;
-const FILTER_SKIP = 0;
+export const FILTER_SKIP = 0;
-const FILTER_END = -1;
+export const FILTER_END = -1;
 
 /**
  * This function check if number is valid
@@ -15,8 +16,8 @@ const FILTER_END = -1;
  * @param {Number} limit - The limit to respect
  * @return {Number} - The parsed number || limit
  */
-function checkLimit(number, limit) {
+export function checkLimit(number: number, limit: number): number {
-    const parsed = Number.parseInt(number, 10);
+    const parsed = Number.parseInt(number, 10) 
     const valid = !Number.isNaN(parsed) && (!limit || parsed <= limit);
     return valid ? parsed : limit;
 }
@@ -28,7 +29,7 @@ function checkLimit(number, limit) {
  * @return {string} - the incremented string
  *                    or the input if it is not valid
  */
-function inc(str) {
+export function inc(str: string): string {
     return str ? (str.slice(0, str.length - 1) +
             String.fromCharCode(str.charCodeAt(str.length - 1) + 1)) : str;
 }
@@ -40,7 +41,7 @@ function inc(str) {
  * @param {object} v0params - listing parameters for v0 format
  * @return {object} - listing parameters for v1 format
  */
-function listingParamsMasterKeysV0ToV1(v0params) {
+export function listingParamsMasterKeysV0ToV1(v0params: any): any {
     const v1params = Object.assign({}, v0params);
     if (v0params.gt !== undefined) {
         v1params.gt = `${DbPrefixes.Master}${v0params.gt}`;
@@ -58,13 +59,3 @@ function listingParamsMasterKeysV0ToV1(v0params) {
     }
     return v1params;
 }
-
-module.exports = {
-    checkLimit,
-    inc,
-    listingParamsMasterKeysV0ToV1,
-    SKIP_NONE,
-    FILTER_END,
-    FILTER_SKIP,
-    FILTER_ACCEPT,
-};

lib/algos/set/ArrayUtils.ts

@@ -1,4 +1,4 @@
-function indexOf(arr, value) {
+export function indexOf<T>(arr: T[], value: T) {
     if (!arr.length) {
         return -1;
     }
@@ -22,10 +22,10 @@ function indexOf(arr, value) {
     return -1;
 }
 
-function indexAtOrBelow(arr, value) {
+export function indexAtOrBelow<T>(arr: T[], value: T) {
-    let i;
+    let i: number;
-    let lo;
+    let lo: number;
-    let hi;
+    let hi: number;
 
     if (!arr.length || arr[0] > value) {
         return -1;
@@ -52,7 +52,7 @@ function indexAtOrBelow(arr, value) {
 /*
  * perform symmetric diff in O(m + n)
  */
-function symDiff(k1, k2, v1, v2, cb) {
+export function symDiff(k1, k2, v1, v2, cb) {
     let i = 0;
     let j = 0;
     const n = k1.length;
@@ -79,9 +79,3 @@ function symDiff(k1, k2, v1, v2, cb) {
         j++;
     }
 }
-
-module.exports = {
-    indexOf,
-    indexAtOrBelow,
-    symDiff,
-};

lib/algos/set/SortedSet.ts

@@ -1,13 +1,12 @@
-const ArrayUtils = require('./ArrayUtils');
+import * as ArrayUtils from './ArrayUtils';
 
-class SortedSet {
+export default class SortedSet<Key, Value> {
-    constructor(obj) {
+    keys: Key[];
-        if (obj) {
+    values: Value[];
-            this.keys = obj.keys;
+
-            this.values = obj.values;
+    constructor(obj?: { keys: Key[]; values: Value[] }) {
-        } else {
+        this.keys = obj?.keys ?? [];
-            this.clear();
+        this.values = obj?.values ?? [];
-        }
     }
 
     clear() {
@@ -19,7 +18,7 @@ class SortedSet {
         return this.keys.length;
     }
 
-    set(key, value) {
+    set(key: Key, value: Value) {
         const index = ArrayUtils.indexAtOrBelow(this.keys, key);
         if (this.keys[index] === key) {
             this.values[index] = value;
@@ -29,17 +28,17 @@ class SortedSet {
         this.values.splice(index + 1, 0, value);
     }
 
-    isSet(key) {
+    isSet(key: Key) {
         const index = ArrayUtils.indexOf(this.keys, key);
         return index >= 0;
     }
 
-    get(key) {
+    get(key: Key) {
         const index = ArrayUtils.indexOf(this.keys, key);
         return index >= 0 ? this.values[index] : undefined;
     }
 
-    del(key) {
+    del(key: Key) {
         const index = ArrayUtils.indexOf(this.keys, key);
         if (index >= 0) {
             this.keys.splice(index, 1);
@@ -47,5 +46,3 @@ class SortedSet {
         }
     }
 }
-
-module.exports = SortedSet;

lib/algos/stream/MergeStream.ts

@@ -1,7 +1,17 @@
-const stream = require('stream');
+import stream from 'stream';
 
-class MergeStream extends stream.Readable {
+export default class MergeStream extends stream.Readable {
-    constructor(stream1, stream2, compare) {
+    _compare: (a: any, b: any) => number;
+    _streams: [stream.Readable, stream.Readable];
+    _peekItems: [undefined | null, undefined | null];
+    _streamEof: [boolean, boolean];
+    _streamToResume: stream.Readable | null;
+
+    constructor(
+        stream1: stream.Readable,
+        stream2: stream.Readable,
+        compare: (a: any, b: any) => number
+    ) {
         super({ objectMode: true });
 
         this._compare = compare;
@@ -16,13 +26,13 @@ class MergeStream extends stream.Readable {
         this._streamEof = [false, false];
         this._streamToResume = null;
 
-        stream1.on('data', item => this._onItem(stream1, item, 0, 1));
+        stream1.on('data', (item) => this._onItem(stream1, item, 0, 1));
         stream1.once('end', () => this._onEnd(stream1, 0, 1));
-        stream1.once('error', err => this._onError(stream1, err, 0, 1));
+        stream1.once('error', (err) => this._onError(stream1, err, 0, 1));
 
-        stream2.on('data', item => this._onItem(stream2, item, 1, 0));
+        stream2.on('data', (item) => this._onItem(stream2, item, 1, 0));
         stream2.once('end', () => this._onEnd(stream2, 1, 0));
-        stream2.once('error', err => this._onError(stream2, err, 1, 0));
+        stream2.once('error', (err) => this._onError(stream2, err, 1, 0));
     }
 
     _read() {
@@ -41,7 +51,7 @@ class MergeStream extends stream.Readable {
         callback();
     }
 
-    _onItem(myStream, myItem, myIndex, otherIndex) {
+    _onItem(myStream: stream.Readable, myItem, myIndex, otherIndex) {
         this._peekItems[myIndex] = myItem;
         const otherItem = this._peekItems[otherIndex];
         if (otherItem === undefined) {
@@ -69,7 +79,7 @@ class MergeStream extends stream.Readable {
         return undefined;
     }
 
-    _onEnd(myStream, myIndex, otherIndex) {
+    _onEnd(myStream: stream.Readable, myIndex, otherIndex) {
         this._streamEof[myIndex] = true;
         if (this._peekItems[myIndex] === undefined) {
             this._peekItems[myIndex] = null;
@@ -94,7 +104,7 @@ class MergeStream extends stream.Readable {
         return otherStream.resume();
     }
 
-    _onError(myStream, err, myIndex, otherIndex) {
+    _onError(myStream: stream.Readable, err, myIndex, otherIndex) {
         myStream.destroy();
         if (this._streams[otherIndex]) {
             this._streams[otherIndex].destroy();
@@ -102,5 +112,3 @@ class MergeStream extends stream.Readable {
         this.emit('error', err);
     }
 }
-
-module.exports = MergeStream;

lib/auth/AuthInfo.ts

@@ -54,8 +54,7 @@ export default class AuthInfo {
         return this.canonicalID === constants.publicId;
     }
     isRequesterAServiceAccount() {
-        return this.canonicalID.startsWith(
+        return this.canonicalID.startsWith(`${constants.zenkoServiceAccount}/`);
-            `${constants.zenkoServiceAccount}/`);
     }
     isRequesterThisServiceAccount(serviceName: string) {
         const computedCanonicalID = `${constants.zenkoServiceAccount}/${serviceName}`;

lib/auth/Vault.ts

@@ -14,7 +14,7 @@ function vaultSignatureCb(
     err: Error | null,
     authInfo: { message: { body: any } },
     log: Logger,
-    callback: (err: Error | null, data?: any, results?: any, params?: any, infos?: any) => void,
+    callback: (err: Error | null, data?: any, results?: any, params?: any) => void,
     streamingV4Params?: any
 ) {
     // vaultclient API guarantees that it returns:
@@ -38,30 +38,9 @@ function vaultSignatureCb(
     }
     // @ts-ignore
     log.addDefaultFields(auditLog);
-    return callback(null, userInfo, authorizationResults, streamingV4Params, {
+    return callback(null, userInfo, authorizationResults, streamingV4Params);
-        accountQuota: info.accountQuota || {},
-    });
 }
 
-export type AuthV4RequestParams = {
-    version: 4;
-    log: Logger;
-    data: {
-        accessKey: string;
-        signatureFromRequest: string;
-        region: string;
-        stringToSign: string;
-        scopeDate: string;
-        authType: 'query' | 'header';
-        signatureVersion: string;
-        signatureAge?: number;
-        timestamp: number;
-        credentialScope: string;
-        securityToken: string;
-        algo: string;
-        log: Logger;
-    };
-};
 
 /**
  * Class that provides common authentication methods against different
@@ -170,8 +149,26 @@ export default class Vault {
      * @param callback - callback with either error or user info
     */
     authenticateV4Request(
-        params: AuthV4RequestParams,
+        params: {
-        requestContexts: any[] | null,
+            version: 4;
+            log: Logger;
+            data: {
+                accessKey: string;
+                signatureFromRequest: string;
+                region: string;
+                stringToSign: string;
+                scopeDate: string;
+                authType: 'query' | 'header';
+                signatureVersion: string;
+                signatureAge?: number;
+                timestamp: number;
+                credentialScope: string;
+                securityToken: string;
+                algo: string;
+                log: Logger;
+            };
+        },
+        requestContexts: any[],
         callback: (err: Error | null, data?: any) => void
     ) {
         params.log.debug('authenticating V4 request');
@@ -302,7 +299,7 @@ export default class Vault {
         log.trace('getting accountIds from Vault based on canonicalIDs',
             { canonicalIDs });
         this.client.getAccountIds(canonicalIDs,
-            // @ts-expect-error
+            // @ts-ignore
             { reqUid: log.getSerializedUids() },
             (err: Error | null, info?: any) => {
                 if (err) {
@@ -386,19 +383,4 @@ export default class Vault {
             return callback(null, respBody);
         });
     }
-
-    report(log: Logger, callback: (err: Error | null, data?: any) => void) {
-        // call the report function of the client
-        if (!this.client.report) {
-            return callback(null, {});
-        }
-        // @ts-ignore
-        return this.client.report(log.getSerializedUids(), (err: Error | null, obj?: any) => {
-            if (err) {
-                log.debug(`error from ${this.implName}`, { error: err });
-                return callback(err);
-            }
-            return callback(null, obj);
-        });
-    }
 }

lib/auth/auth.ts

@@ -11,11 +11,11 @@ import constructStringToSignV4 from './v4/constructStringToSign';
 import { convertUTCtoISO8601 } from './v4/timeUtils';
 import * as vaultUtilities from './backends/in_memory/vaultUtilities';
 import * as inMemoryBackend from './backends/in_memory/Backend';
-import baseBackend from './backends/base';
-import chainBackend from './backends/ChainBackend';
 import validateAuthConfig from './backends/in_memory/validateAuthConfig';
 import AuthLoader from './backends/in_memory/AuthLoader';
 import Vault from './Vault';
+import baseBackend from './backends/BaseBackend';
+import chainBackend from './backends/ChainBackend';
 
 let vault: Vault | null = null;
 const auth = {};
@@ -77,8 +77,9 @@ function extractParams(
         } else if (authHeader.startsWith('AWS4')) {
             version = 'v4';
         } else {
-            log.trace('invalid authorization security header',
+            log.trace('invalid authorization security header', {
-                { header: authHeader });
+                header: authHeader,
+            });
             return { err: errors.AccessDenied };
         }
     } else if (data.Signature) {
@@ -92,8 +93,10 @@ function extractParams(
     // Here, either both values are set, or none is set
     if (version !== null && method !== null) {
         if (!checkFunctions[version] || !checkFunctions[version][method]) {
-            log.trace('invalid auth version or method',
+            log.trace('invalid auth version or method', {
-                { version, authMethod: method });
+                version,
+                authMethod: method,
+            });
             return { err: errors.NotImplemented };
         }
         log.trace('identified auth method', { version, authMethod: method });
@@ -163,20 +166,6 @@ function doAuth(
     return cb(errors.InternalError);
 }
 
-/**
- * This function will generate a version 4 content-md5 header
- * It looks at the request path to determine what kind of header encoding is required
- *
- * @param path - the request path
- * @param payload - the request payload to hash
- */
-function generateContentMD5Header(
-    path: string,
-    payload: string,
-) {
-    const encoding = path && path.startsWith('/_/backbeat/') ? 'hex' : 'base64';
-    return crypto.createHash('md5').update(payload, 'binary').digest(encoding);
-}
 /**
  * This function will generate a version 4 header
  *
@@ -189,7 +178,6 @@ function generateContentMD5Header(
  * @param [proxyPath] - path that gets proxied by reverse proxy
  * @param [sessionToken] - security token if the access/secret keys
  *                                are temporary credentials from STS
- * @param [payload] - body of the request if any
  */
 function generateV4Headers(
     request: any,
@@ -197,9 +185,8 @@ function generateV4Headers(
     accessKey: string,
     secretKeyValue: string,
     awsService: string,
-    proxyPath?: string,
+    proxyPath: string,
-    sessionToken?: string,
+    sessionToken: string
-    payload?: string,
 ) {
     Object.assign(request, { headers: {} });
     const amzDate = convertUTCtoISO8601(Date.now());
@@ -207,23 +194,23 @@ function generateV4Headers(
     const scopeDate = amzDate.slice(0, amzDate.indexOf('T'));
     const region = 'us-east-1';
     const service = awsService || 'iam';
-    const credentialScope =
+    const credentialScope = `${scopeDate}/${region}/${service}/aws4_request`;
-        `${scopeDate}/${region}/${service}/aws4_request`;
     const timestamp = amzDate;
     const algorithm = 'AWS4-HMAC-SHA256';
 
-    payload = payload || '';
+    let payload = '';
     if (request.method === 'POST') {
         payload = queryString.stringify(data, undefined, undefined, {
             encodeURIComponent,
         });
     }
-    const payloadChecksum = crypto.createHash('sha256')
+    const payloadChecksum = crypto
-        .update(payload, 'binary').digest('hex');
+        .createHash('sha256')
+        .update(payload, 'binary')
+        .digest('hex');
     request.setHeader('host', request._headers.host);
     request.setHeader('x-amz-date', amzDate);
     request.setHeader('x-amz-content-sha256', payloadChecksum);
-    request.setHeader('content-md5', generateContentMD5Header(request.path, payload));
 
     if (sessionToken) {
         request.setHeader('x-amz-security-token', sessionToken);
@@ -231,35 +218,49 @@ function generateV4Headers(
 
     Object.assign(request.headers, request._headers);
     const signedHeaders = Object.keys(request._headers)
-        .filter(headerName =>
+        .filter(
-            headerName.startsWith('x-amz-')
+            (headerName) =>
-            || headerName.startsWith('x-scal-')
+                headerName.startsWith('x-amz-') ||
-            || headerName === 'content-md5'
+                headerName.startsWith('x-scal-') ||
-            || headerName === 'host',
+                headerName === 'host'
-        ).sort().join(';');
+        )
-    const params = { request, signedHeaders, payloadChecksum,
+        .sort()
-        credentialScope, timestamp, query: data,
+        .join(';');
-        awsService: service, proxyPath };
+    const params = {
+        request,
+        signedHeaders,
+        payloadChecksum,
+        credentialScope,
+        timestamp,
+        query: data,
+        awsService: service,
+        proxyPath,
+    };
     const stringToSign = constructStringToSignV4(params);
-    const signingKey = vaultUtilities.calculateSigningKey(secretKeyValue,
+    const signingKey = vaultUtilities.calculateSigningKey(
+        secretKeyValue,
         region,
         scopeDate,
-        service);
+        service
-    const signature = crypto.createHmac('sha256', signingKey)
+    );
-        .update(stringToSign as string, 'binary').digest('hex');
+    const signature = crypto
-    const authorizationHeader = `${algorithm} Credential=${accessKey}` +
+        .createHmac('sha256', signingKey)
+        .update(stringToSign, 'binary')
+        .digest('hex');
+    const authorizationHeader =
+        `${algorithm} Credential=${accessKey}` +
         `/${credentialScope}, SignedHeaders=${signedHeaders}, ` +
         `Signature=${signature}`;
     request.setHeader('authorization', authorizationHeader);
     Object.assign(request, { headers: {} });
 }
 
-export const server = { extractParams, doAuth }
+export const server = { extractParams, doAuth };
-export const client = { generateV4Headers, constructStringToSignV2 }
+export const client = { generateV4Headers, constructStringToSignV2 };
-export const inMemory = { backend: inMemoryBackend, validateAuthConfig, AuthLoader }
+export const inMemory = {
-export const backends = { baseBackend, chainBackend }
+    backend: inMemoryBackend,
-export {
+    validateAuthConfig,
-    setAuthHandler as setHandler,
+    AuthLoader,
-    AuthInfo,
+};
-    Vault
+export const backends = { baseBackend, chainBackend };
-}
+export { setAuthHandler as setHandler, AuthInfo, Vault };

lib/auth/backends/BaseBackend.ts

@@ -0,0 +1,70 @@
+import errors from '../../errors';
+import { Callback } from './in_memory/types';
+
+/** Base backend class */
+export default class BaseBackend {
+    service: string;
+
+    constructor(service: string) {
+        this.service = service;
+    }
+
+    verifySignatureV2(
+        _stringToSign: string,
+        _signatureFromRequest: string,
+        _accessKey: string,
+        _options: { algo: 'SHA1' | 'SHA256' },
+        callback: Callback
+    ) {
+        return callback(errors.AuthMethodNotImplemented);
+    }
+
+    verifySignatureV4(
+        _stringToSign: string,
+        _signatureFromRequest: string,
+        _accessKey: string,
+        _region: string,
+        _scopeDate: string,
+        _options: any,
+        callback: Callback
+    ) {
+        return callback(errors.AuthMethodNotImplemented);
+    }
+
+    /**
+     * Gets canonical ID's for a list of accounts based on email associated
+     * with account. The callback will be called with either error or object
+     * with email addresses as keys and canonical IDs as values.
+     */
+    getCanonicalIds(_emails: string[], _options: any, callback: Callback) {
+        return callback(errors.AuthMethodNotImplemented);
+    }
+
+    /**
+     * Gets email addresses (referred to as diplay names for getACL's) for a
+     * list of accounts based on canonical IDs associated with account.
+     * The callback will be called with either error or an object from Vault
+     * containing account canonicalID as each object key and an email address
+     * as the value (or "NotFound").
+     */
+    getEmailAddresses(
+        _canonicalIDs: string[],
+        _options: any,
+        callback: Callback
+    ) {
+        return callback(errors.AuthMethodNotImplemented);
+    }
+
+    checkPolicies(
+        _requestContextParams: any,
+        _userArn: string,
+        _options: any,
+        callback: Callback
+    ) {
+        return callback(null, { message: { body: [] } });
+    }
+
+    healthcheck(_reqUid: string, callback: Callback) {
+        return callback(null, { code: 200, message: 'OK' });
+    }
+}

lib/auth/backends/ChainBackend.ts

@@ -1,24 +1,31 @@
 import assert from 'assert';
 import async from 'async';
+
+import { Callback } from './in_memory/types';
 import errors from '../../errors';
-import BaseBackend from './base';
+import BaseBackend from './BaseBackend';
+
+export type Policy = {
+    [key: string]: any;
+    arn?: string;
+    versionId?: string;
+    isAllowed: boolean;
+}
 
 /**
  * Class that provides an authentication backend that will verify signatures
  * and retrieve emails and canonical ids associated with an account using a
  * given list of authentication backends and vault clients.
- *
- * @class ChainBackend
  */
 export default class ChainBackend extends BaseBackend {
-    _clients: any[];
+    #clients: BaseBackend[];
 
     /**
      * @constructor
      * @param {string} service - service id
      * @param {object[]} clients - list of authentication backends or vault clients
      */
-    constructor(service: string, clients: any[]) {
+    constructor(service: string, clients: BaseBackend[]) {
         super(service);
 
         assert(Array.isArray(clients) && clients.length > 0, 'invalid client list');
@@ -28,25 +35,20 @@ export default class ChainBackend extends BaseBackend {
             typeof client.getCanonicalIds === 'function' &&
             typeof client.getEmailAddresses === 'function' &&
             typeof client.checkPolicies === 'function' &&
-            typeof client.healthcheck === 'function',
+            typeof client.healthcheck === 'function'
         ), 'invalid client: missing required auth backend methods');
-        this._clients = clients;
+        this.#clients = clients;
     }
 
-
+    /** try task against each client for one to be successful */
-    /*
+    #tryEachClient(task: (client: BaseBackend, done?: any) => void, cb: Callback) {
-     * try task against each client for one to be successful
-     */
-    _tryEachClient(task: any, cb: any) {
         // @ts-ignore
-        async.tryEach(this._clients.map(client => done => task(client, done)), cb);
+        async.tryEach(this.#clients.map(client => (done: any) => task(client, done)), cb);
     }
 
-    /*
+    /** apply task to all clients */
-     * apply task to all clients
+    #forEachClient(task: (client: BaseBackend, done?: any) => void, cb: Callback) {
-     */
+        async.map(this.#clients, task, cb);
-    _forEachClient(task: any, cb: any) {
-        async.map(this._clients, task, cb);
     }
 
     verifySignatureV2(
@@ -54,14 +56,14 @@ export default class ChainBackend extends BaseBackend {
         signatureFromRequest: string,
         accessKey: string,
         options: any,
-        callback: any,
+        callback: Callback
     ) {
-        this._tryEachClient((client, done) => client.verifySignatureV2(
+        this.#tryEachClient((client, done) => client.verifySignatureV2(
             stringToSign,
             signatureFromRequest,
             accessKey,
             options,
-            done,
+            done
         ), callback);
     }
 
@@ -72,27 +74,32 @@ export default class ChainBackend extends BaseBackend {
         region: string,
         scopeDate: string,
         options: any,
-      callback: any,
+        callback: Callback
     ) {
-        this._tryEachClient((client, done) => client.verifySignatureV4(
+        this.#tryEachClient((client, done) => client.verifySignatureV4(
             stringToSign,
             signatureFromRequest,
             accessKey,
             region,
             scopeDate,
             options,
-            done,
+            done
         ), callback);
     }
 
-    static _mergeObjects(objectResponses: any) {
+    static _mergeObjects(objectResponses: any[]) {
         return objectResponses.reduce(
             (retObj, resObj) => Object.assign(retObj, resObj.message.body),
-            {});
+            {}
+        );
     }
 
-    getCanonicalIds(emailAddresses: string[], options: any, callback: any) {
+    getCanonicalIds(
-        this._forEachClient(
+        emailAddresses: string[],
+        options: any,
+        callback: Callback<{ message: { body: any } }>
+    ) {
+        this.#forEachClient(
             (client, done) => client.getCanonicalIds(emailAddresses, options, done),
             (err, res) => {
                 if (err) {
@@ -104,11 +111,16 @@ export default class ChainBackend extends BaseBackend {
                         body: ChainBackend._mergeObjects(res),
                     },
                 });
-            });
+            }
+        );
     }
 
-    getEmailAddresses(canonicalIDs: string[], options: any, callback: any) {
+    getEmailAddresses(
-        this._forEachClient(
+        canonicalIDs: string[],
+        options: any,
+        callback: Callback<{ message: { body: any } }>
+    ) {
+        this.#forEachClient(
             (client, done) => client.getEmailAddresses(canonicalIDs, options, done),
             (err, res) => {
                 if (err) {
@@ -119,56 +131,41 @@ export default class ChainBackend extends BaseBackend {
                         body: ChainBackend._mergeObjects(res),
                     },
                 });
-            });
+            }
+        );
     }
 
-    /*
+    /** merge policy responses into a single message */
-     * merge policy responses into a single message
+    static _mergePolicies(policyResponses: { message: { body: any[] } }[]) {
-     */
+        const policyMap: { [key: string]: Policy } = {};
-    static _mergePolicies(policyResponses: any) {
-        const policyMap: any = {};
 
         policyResponses.forEach(resp => {
             if (!resp.message || !Array.isArray(resp.message.body)) {
                 return;
             }
 
-            const check = (policy) => {
+            resp.message.body.forEach(policy => {
-                const key = (policy.arn || '') + (policy.versionId || '') + (policy.action || '');
+                const key = (policy.arn || '') + (policy.versionId || '');
                 if (!policyMap[key] || !policyMap[key].isAllowed) {
                     policyMap[key] = policy;
                 }
                 // else is duplicate policy
-            };
-
-            resp.message.body.forEach(policy => {
-                if (Array.isArray(policy)) {
-                    policy.forEach(authResult => check(authResult));
-                } else {
-                    check(policy);
-                }
             });
         });
 
-        return Object.keys(policyMap).map(key => {
+        return Object.keys(policyMap).map((key) => {
-            const policyRes: any = { isAllowed: policyMap[key].isAllowed };
+            const policyRes: Policy = { isAllowed: policyMap[key].isAllowed };
-            if (policyMap[key].arn !== '') {
+            if (policyMap[key].arn && policyMap[key].arn !== '') {
                 policyRes.arn = policyMap[key].arn;
             }
             if (policyMap[key].versionId) {
                 policyRes.versionId = policyMap[key].versionId;
             }
-            if (policyMap[key].isImplicit !== undefined) {
-                policyRes.isImplicit = policyMap[key].isImplicit;
-            }
-            if (policyMap[key].action) {
-                policyRes.action = policyMap[key].action;
-            }
             return policyRes;
         });
     }
 
-    /*
+    /**
         response format:
             {  message: {
                 body: [{}],
@@ -176,12 +173,17 @@ export default class ChainBackend extends BaseBackend {
                 message: string,
             } }
      */
-    checkPolicies(requestContextParams: any, userArn: string, options: any, callback: any) {
+    checkPolicies(
-        this._forEachClient((client, done) => client.checkPolicies(
+        requestContextParams: any,
+        userArn: string,
+        options: any,
+        callback: Callback<{ message: { body: any } }>
+    ) {
+        this.#forEachClient((client, done) => client.checkPolicies(
             requestContextParams,
             userArn,
             options,
-            done,
+            done
         ), (err, res) => {
             if (err) {
                 return callback(err);
@@ -194,40 +196,22 @@ export default class ChainBackend extends BaseBackend {
         });
     }
 
-    healthcheck(reqUid: string, callback: any) {
+    healthcheck(reqUid: string, callback: Callback) {
-        this._forEachClient((client, done) =>
+        this.#forEachClient((client, done) =>
             client.healthcheck(reqUid, (err, res) => done(null, {
                 error: !!err ? err : null,
                 status: res,
-            }),
+            })
             ), (err, res) => {
             if (err) {
                 return callback(err);
             }
 
-            const isError = res.some(results => !!results.error);
+            const isError = res.some((results: any) => !!results.error);
             if (isError) {
                 return callback(errors.InternalError, res);
             }
             return callback(null, res);
         });
     }
-
-    report(reqUid: string, callback: any) {
-        this._forEachClient((client, done) =>
-            client.report(reqUid, done),
-            (err, res) => {
-                if (err) {
-                    return callback(err);
-                }
-                const mergedRes = res.reduce((acc, val) => {
-                    Object.keys(val).forEach(k => {
-                        acc[k] = val[k];
-                    });
-                    return acc;
-                }, {});
-
-                return callback(null, mergedRes);
-            });
-    }
 }

lib/auth/backends/base.ts

@@ -1,96 +0,0 @@
-import errors from '../../errors';
-
-/**
- * Base backend class
- *
- * @class BaseBackend
- */
-export default class BaseBackend {
-    service: string;
-
-    /**
-     * @constructor
-     * @param {string} service - service identifer for construction arn
-     */
-    constructor(service: string) {
-        this.service = service;
-    }
-
-    /** verifySignatureV2
-    * @param stringToSign - string to sign built per AWS rules
-    * @param signatureFromRequest - signature sent with request
-    * @param accessKey - account accessKey
-    * @param options - contains algorithm (SHA1 or SHA256)
-    * @param callback - callback with either error or user info
-    * @return calls callback
-    */
-    verifySignatureV2(
-        stringToSign: string,
-        signatureFromRequest: string,
-        accessKey: string,
-        options: any,
-        callback: any
-    ) {
-        return callback(errors.AuthMethodNotImplemented);
-    }
-
-
-    /** verifySignatureV4
-     * @param stringToSign - string to sign built per AWS rules
-     * @param signatureFromRequest - signature sent with request
-     * @param accessKey - account accessKey
-     * @param region - region specified in request credential
-     * @param scopeDate - date specified in request credential
-     * @param options - options to send to Vault
-     * (just contains reqUid for logging in Vault)
-     * @param callback - callback with either error or user info
-     * @return calls callback
-     */
-    verifySignatureV4(
-        stringToSign: string,
-        signatureFromRequest: string,
-        accessKey: string,
-        region: string,
-        scopeDate: string,
-        options: any,
-        callback: any
-    ) {
-        return callback(errors.AuthMethodNotImplemented);
-    }
-
-    /**
-     * Gets canonical ID's for a list of accounts
-     * based on email associated with account
-     * @param emails - list of email addresses
-     * @param options - to send log id to vault
-     * @param callback - callback to calling function
-     * @returns callback with either error or
-     * object with email addresses as keys and canonical IDs
-     * as values
-     */
-    getCanonicalIds(emails: string[], options: any, callback: any) {
-        return callback(errors.AuthMethodNotImplemented);
-    }
-
-    /**
-     * Gets email addresses (referred to as diplay names for getACL's)
-     * for a list of accounts based on canonical IDs associated with account
-     * @param canonicalIDs - list of canonicalIDs
-     * @param options - to send log id to vault
-     * @param callback - callback to calling function
-     * @returns callback with either error or
-     * an object from Vault containing account canonicalID
-     * as each object key and an email address as the value (or "NotFound")
-     */
-    getEmailAddresses(canonicalIDs: string[], options: any, callback: any) {
-        return callback(errors.AuthMethodNotImplemented);
-    }
-
-    checkPolicies(requestContextParams: any, userArn: string, options: any, callback: any) {
-        return callback(null, { message: { body: [] } });
-    }
-
-    healthcheck(reqUid: string, callback: any) {
-        return callback(null, { code: 200, message: 'OK' });
-    }
-}

lib/auth/backends/in_memory/AuthLoader.ts

@@ -4,6 +4,7 @@ import joi from 'joi';
 import werelogs from 'werelogs';
 import * as types from './types';
 import { Account, Accounts } from './types';
+
 import ARN from '../../../models/ARN';
 
 /** Load authentication information from files or pre-loaded account objects */
@@ -49,9 +50,9 @@ export default class AuthLoader {
     addFile(filePath: string, options?: { legacy: true }): void;
     addFile(filePath: string, options = { legacy: true }) {
         // On deprecation, remove the legacy part and keep the promises.
-        const readFunc: any = options.legacy ? fs.readFileSync : fs.promises.readFile;
+        const fn: any = options.legacy ? fs.readFileSync : fs.promises.readFile;
-        const readResult = readFunc(filePath, 'utf8') as Promise<string> | string;
+        const temp = fn(filePath, 'utf8') as Promise<string> | string;
-        const prom = Promise.resolve(readResult).then((data) => {
+        const prom = Promise.resolve(temp).then((data) => {
             const authData = JSON.parse(data);
             this.addAccounts(authData, filePath);
         });

lib/auth/backends/in_memory/Backend.ts

@@ -1,9 +1,8 @@
-import crypto from 'crypto';
+import * as crypto from 'crypto';
-import { Logger } from 'werelogs';
 import errors from '../../../errors';
 import { calculateSigningKey, hashSignature } from './vaultUtilities';
 import Indexer from './Indexer';
-import BaseBackend from '../base';
+import BaseBackend from '../BaseBackend';
 import { Accounts } from './types';
 
 function _formatResponse(userInfoToSend: any) {
@@ -17,40 +16,41 @@ function _formatResponse(userInfoToSend: any) {
 /**
  * Class that provides a memory backend for verifying signatures and getting
  * emails and canonical ids associated with an account.
- *
- * @class InMemoryBackend
  */
 class InMemoryBackend extends BaseBackend {
     indexer: Indexer;
-    formatResponse: any;
 
     /**
      * @constructor
      * @param service - service identifer for construction arn
      * @param indexer - indexer instance for retrieving account info
-     * @param formatter - function which accepts user info to send
-     * back and returns it in an object
      */
-    constructor(service: string, indexer: Indexer, formatter: typeof _formatResponse) {
+    constructor(service: string, indexer: Indexer) {
         super(service);
         this.indexer = indexer;
-        this.formatResponse = formatter;
     }
 
+    // CODEQUALITY-TODO-SYNC Should be synchronous
     verifySignatureV2(
         stringToSign: string,
         signatureFromRequest: string,
         accessKey: string,
-        options: any,
+        options: { algo: 'SHA256' | 'SHA1' },
-        callback: any,
+        callback: (
+            error: Error | null,
+            data?: ReturnType<typeof _formatResponse>
+        ) => void
     ) {
         const entity = this.indexer.getEntityByKey(accessKey);
         if (!entity) {
             return callback(errors.InvalidAccessKeyId);
         }
         const secretKey = this.indexer.getSecretKey(entity, accessKey);
-        const reconstructedSig =
+        const reconstructedSig = hashSignature(
-            hashSignature(stringToSign, secretKey, options.algo);
+            stringToSign,
+            secretKey,
+            options.algo
+        );
         if (signatureFromRequest !== reconstructedSig) {
             return callback(errors.SignatureDoesNotMatch);
         }
@@ -58,21 +58,26 @@ class InMemoryBackend extends BaseBackend {
             accountDisplayName: this.indexer.getAcctDisplayName(entity),
             canonicalID: entity.canonicalID,
             arn: entity.arn,
-            // @ts-ignore
+            // @ts-ignore TODO why ?
             IAMdisplayName: entity.IAMdisplayName,
         };
-        const vaultReturnObject = this.formatResponse(userInfoToSend);
+        const vaultReturnObject = _formatResponse(userInfoToSend);
         return callback(null, vaultReturnObject);
     }
 
+    // TODO Options not used. Why ?
+    // CODEQUALITY-TODO-SYNC Should be synchronous
     verifySignatureV4(
         stringToSign: string,
         signatureFromRequest: string,
         accessKey: string,
         region: string,
         scopeDate: string,
-        options: any,
+        _options: { algo: 'SHA256' | 'SHA1' },
-        callback: any,
+        callback: (
+            err: Error | null,
+            data?: ReturnType<typeof _formatResponse>
+        ) => void
     ) {
         const entity = this.indexer.getEntityByKey(accessKey);
         if (!entity) {
@@ -80,8 +85,10 @@ class InMemoryBackend extends BaseBackend {
         }
         const secretKey = this.indexer.getSecretKey(entity, accessKey);
         const signingKey = calculateSigningKey(secretKey, region, scopeDate);
-        const reconstructedSig = crypto.createHmac('sha256', signingKey)
+        const reconstructedSig = crypto
-            .update(stringToSign, 'binary').digest('hex');
+            .createHmac('sha256', signingKey)
+            .update(stringToSign, 'binary')
+            .digest('hex');
         if (signatureFromRequest !== reconstructedSig) {
             return callback(errors.SignatureDoesNotMatch);
         }
@@ -89,23 +96,28 @@ class InMemoryBackend extends BaseBackend {
             accountDisplayName: this.indexer.getAcctDisplayName(entity),
             canonicalID: entity.canonicalID,
             arn: entity.arn,
-            // @ts-ignore
+            // @ts-ignore TODO why ?
             IAMdisplayName: entity.IAMdisplayName,
         };
-        const vaultReturnObject = this.formatResponse(userInfoToSend);
+        const vaultReturnObject = _formatResponse(userInfoToSend);
         return callback(null, vaultReturnObject);
     }
 
-    getCanonicalIds(emails: string[], log: Logger, cb: any) {
+    // TODO log not used. Why ?
+    // CODEQUALITY-TODO-SYNC Should be synchronous
+    getCanonicalIds(
+        emails: string[],
+        _log: any,
+        cb: (err: null, data: { message: { body: any } }) => void
+    ) {
         const results = {};
-        emails.forEach(email => {
+        emails.forEach((email) => {
             const lowercasedEmail = email.toLowerCase();
             const entity = this.indexer.getEntityByEmail(lowercasedEmail);
             if (!entity) {
                 results[email] = 'NotFound';
             } else {
-                results[email] =
+                results[email] = entity.canonicalID;
-                    entity.canonicalID;
             }
         });
         const vaultReturnObject = {
@@ -116,9 +128,15 @@ class InMemoryBackend extends BaseBackend {
         return cb(null, vaultReturnObject);
     }
 
-    getEmailAddresses(canonicalIDs: string[], options: any, cb: any) {
+    // TODO options not used. Why ?
+    // CODEQUALITY-TODO-SYNC Should be synchronous
+    getEmailAddresses(
+        canonicalIDs: string[],
+        _options: any,
+        cb: (err: null, data: { message: { body: any } }) => void
+    ) {
         const results = {};
-        canonicalIDs.forEach(canonicalId => {
+        canonicalIDs.forEach((canonicalId) => {
             const foundEntity = this.indexer.getEntityByCanId(canonicalId);
             if (!foundEntity || !foundEntity.email) {
                 results[canonicalId] = 'NotFound';
@@ -134,19 +152,26 @@ class InMemoryBackend extends BaseBackend {
         return cb(null, vaultReturnObject);
     }
 
+    // TODO options not used. Why ?
+    // CODEQUALITY-TODO-SYNC Should be synchronous
     /**
      * Gets accountIds for a list of accounts based on
      * the canonical IDs associated with the account
      * @param canonicalIDs - list of canonicalIDs
      * @param options - to send log id to vault
      * @param cb - callback to calling function
-     * @returns callback with either error or
+     * @return The next is wrong. Here to keep archives.
+     * callback with either error or
      * an object from Vault containing account canonicalID
      * as each object key and an accountId as the value (or "NotFound")
      */
-    getAccountIds(canonicalIDs: string[], options: any, cb: any) {
+    getAccountIds(
+        canonicalIDs: string[],
+        _options: any,
+        cb: (err: null, data: { message: { body: any } }) => void
+    ) {
         const results = {};
-        canonicalIDs.forEach(canonicalID => {
+        canonicalIDs.forEach((canonicalID) => {
             const foundEntity = this.indexer.getEntityByCanId(canonicalID);
             if (!foundEntity || !foundEntity.shortid) {
                 results[canonicalID] = 'Not Found';
@@ -161,34 +186,16 @@ class InMemoryBackend extends BaseBackend {
         };
         return cb(null, vaultReturnObject);
     }
-
-    report(log: Logger, callback: any) {
-        return callback(null, {});
-    }
 }
 
-
 class S3AuthBackend extends InMemoryBackend {
-    /**
+    constructor(authdata: Accounts) {
-     * @constructor
+        super('s3', new Indexer(authdata));
-     * @param authdata - the authentication config file's data
-     * @param authdata.accounts - array of account objects
-     * @param authdata.accounts[].name - account name
-     * @param authdata.accounts[].email - account email
-     * @param authdata.accounts[].arn - IAM resource name
-     * @param authdata.accounts[].canonicalID - account canonical ID
-     * @param authdata.accounts[].shortid - short account ID
-     * @param authdata.accounts[].keys - array of key objects
-     * @param authdata.accounts[].keys[].access - access key
-     * @param authdata.accounts[].keys[].secret - secret key
-     */
-    constructor(authdata?: Accounts) {
-        super('s3', new Indexer(authdata), _formatResponse);
     }
 
-    refreshAuthData(authData?: Accounts) {
+    refreshAuthData(authData: Accounts) {
         this.indexer = new Indexer(authData);
     }
 }
 
-export { S3AuthBackend as s3 }
+export { S3AuthBackend as s3 };

lib/auth/backends/in_memory/types.ts

@@ -1,14 +1,14 @@
 import joi from 'joi';
 
-export type Callback<Data = any> = (err?: Error | null | undefined, data?: Data) => void;
+export type Callback<Data = any> = (err: Error | null | undefined, data?: Data) => void;
 
-export type Credentials = { access: string; secret: string };
+export type Key = { access: string; secret: string };
 export type Base = {
     arn: string;
     canonicalID: string;
     shortid: string;
     email: string;
-    keys: Credentials[];
+    keys: Key[];
 };
 export type Account = Base & { name: string; users: any[] };
 export type Accounts = { accounts: Account[] };

lib/auth/backends/in_memory/vaultUtilities.ts

@@ -15,7 +15,7 @@ export function hashSignature(
     return hmacObject.update(stringToSign, 'binary').digest('base64');
 }
 
-const sha256Digest = (key: string | Buffer, data: string) => {
+const sha256 = (key: string | Buffer, data: string) => {
     return crypto.createHmac('sha256', key).update(data, 'binary').digest();
 };
 
@@ -32,9 +32,9 @@ export function calculateSigningKey(
     scopeDate: string,
     service?: string
 ): Buffer {
-    const dateKey = sha256Digest(`AWS4${secretKey}`, scopeDate);
+    const dateKey = sha256(`AWS4${secretKey}`, scopeDate);
-    const dateRegionKey = sha256Digest(dateKey, region);
+    const dateRegionKey = sha256(dateKey, region);
-    const dateRegionServiceKey = sha256Digest(dateRegionKey, service || 's3');
+    const dateRegionServiceKey = sha256(dateRegionKey, service || 's3');
-    const signingKey = sha256Digest(dateRegionServiceKey, 'aws4_request');
+    const signingKey = sha256(dateRegionServiceKey, 'aws4_request');
     return signingKey;
 }

lib/auth/v2/checkRequestExpiry.ts

@@ -17,7 +17,7 @@ export default function checkRequestExpiry(timestamp: number, log: Logger) {
     log.trace('request timestamp', { requestTimestamp: timestamp });
     log.trace('current timestamp', { currentTimestamp: currentTime });
 
-    const fifteenMinutes = (15 * 60 * 1000);
+    const fifteenMinutes = 15 * 60 * 1000;
     if (currentTime - timestamp > fifteenMinutes) {
         log.trace('request timestamp is not within 15 minutes of current time');
         log.debug('request time too skewed', { timestamp });

lib/auth/v2/constructStringToSign.ts

@@ -26,11 +26,11 @@ export default function constructStringToSign(
 
     const contentMD5 = headers['content-md5'] ?
         headers['content-md5'] : query['Content-MD5'];
-    stringToSign += (contentMD5 ? `${contentMD5}\n` : '\n');
+    stringToSign += contentMD5 ? `${contentMD5}\n` : '\n';
 
     const contentType = headers['content-type'] ?
         headers['content-type'] : query['Content-Type'];
-    stringToSign += (contentType ? `${contentType}\n` : '\n');
+    stringToSign += contentType ? `${contentType}\n` : '\n';
 
     /*
     AWS docs are conflicting on whether to include x-amz-date header here

lib/auth/v2/headerAuthCheck.ts

@@ -16,15 +16,19 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
     }
 
     // Check to make sure timestamp is within 15 minutes of current time
-    let timestamp = headers['x-amz-date'] ?
+    let timestamp = headers['x-amz-date']
-        headers['x-amz-date'] : headers.date;
+        ? headers['x-amz-date']
+        : headers.date;
     timestamp = Date.parse(timestamp);
     if (!timestamp) {
-        log.debug('missing or invalid date header',
+        log.debug('missing or invalid date header', {
-            { method: 'auth/v2/headerAuthCheck.check' });
+            method: 'auth/v2/headerAuthCheck.check',
-        return { err: errors.AccessDenied.
+        });
-            customizeDescription('Authentication requires a valid Date or ' +
+        return {
-          'x-amz-date header') };
+            err: errors.AccessDenied.customizeDescription(
+                'Authentication requires a valid Date or ' + 'x-amz-date header'
+            ),
+        };
     }
 
     const err = checkRequestExpiry(timestamp, log);
@@ -45,8 +49,10 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
         log.debug('invalid authorization header', { authInfo });
         return { err: errors.InvalidArgument };
     }
-    const accessKey = semicolonIndex > 4 ?
+    const accessKey =
-        authInfo.substring(4, semicolonIndex).trim() : undefined;
+        semicolonIndex > 4
+            ? authInfo.substring(4, semicolonIndex).trim()
+            : undefined;
     if (typeof accessKey !== 'string' || accessKey.length === 0) {
         log.trace('invalid authorization header', { authInfo });
         return { err: errors.MissingSecurityHeader };

lib/auth/v2/queryAuthCheck.ts

@@ -27,26 +27,28 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
     */
     const expirationTime = parseInt(data.Expires, 10) * 1000;
     if (Number.isNaN(expirationTime)) {
-        log.debug('invalid expires parameter',
+        log.debug('invalid expires parameter', { expires: data.Expires });
-            { expires: data.Expires });
         return { err: errors.MissingSecurityHeader };
     }
 
     const currentTime = Date.now();
 
-    const preSignedURLExpiry = process.env.PRE_SIGN_URL_EXPIRY
+    const preSignedURLExpiry =
-        && !Number.isNaN(process.env.PRE_SIGN_URL_EXPIRY)
+        process.env.PRE_SIGN_URL_EXPIRY &&
+        !Number.isNaN(process.env.PRE_SIGN_URL_EXPIRY)
             ? Number.parseInt(process.env.PRE_SIGN_URL_EXPIRY, 10)
             : constants.defaultPreSignedURLExpiry * 1000;
 
     if (expirationTime > currentTime + preSignedURLExpiry) {
-        log.debug('expires parameter too far in future',
+        log.debug('expires parameter too far in future', {
-            { expires: request.query.Expires });
+            expires: request.query.Expires,
+        });
         return { err: errors.AccessDenied };
     }
     if (currentTime > expirationTime) {
-        log.debug('current time exceeds expires time',
+        log.debug('current time exceeds expires time', {
-            { expires: request.query.Expires });
+            expires: request.query.Expires,
+        });
         return { err: errors.RequestTimeTooSkewed };
     }
     const accessKey = data.AWSAccessKeyId;

lib/auth/v4/awsURIencode.ts

@@ -35,30 +35,33 @@ export default function awsURIencode(
     encodeSlash?: boolean,
     noEncodeStar?: boolean
 ) {
+    const encSlash = encodeSlash === undefined ? true : encodeSlash;
+    let encoded = '';
     /**
      * Duplicate query params are not suppported by AWS S3 APIs. These params
      * are parsed as Arrays by Node.js HTTP parser which breaks this method
      */
     if (typeof input !== 'string') {
-        return '';
+        return encoded;
     }
-    let encoded = "";
-    const slash = encodeSlash === undefined || encodeSlash ? '%2F' : '/';
-    const star = noEncodeStar !== undefined && noEncodeStar ? '*' : '%2A';
     for (let i = 0; i < input.length; i++) {
         let ch = input.charAt(i);
-        if ((ch >= 'A' && ch <= 'Z') ||
+        if (
+            (ch >= 'A' && ch <= 'Z') ||
             (ch >= 'a' && ch <= 'z') ||
             (ch >= '0' && ch <= '9') ||
-            ch === '_' || ch === '-' ||
+            ch === '_' ||
-            ch === '~' || ch === '.') {
+            ch === '-' ||
+            ch === '~' ||
+            ch === '.'
+        ) {
             encoded = encoded.concat(ch);
         } else if (ch === ' ') {
             encoded = encoded.concat('%20');
         } else if (ch === '/') {
-            encoded = encoded.concat(slash);
+            encoded = encoded.concat(encSlash ? '%2F' : ch);
         } else if (ch === '*') {
-            encoded = encoded.concat(star);
+            encoded = encoded.concat(noEncodeStar ? '*' : '%2A');
         } else {
             if (ch >= '\uD800' && ch <= '\uDBFF') {
                 // If this character is a high surrogate peek the next character

lib/auth/v4/constructStringToSign.ts

@@ -15,9 +15,9 @@ export default function constructStringToSign(params: {
     timestamp: string;
     query: { [key: string]: string };
     log?: Logger;
-    proxyPath?: string;
+    proxyPath: string;
     awsService: string;
-}): string | Error {
+}): string {
     const {
         request,
         signedHeaders,
@@ -52,9 +52,11 @@ export default function constructStringToSign(params: {
         log.debug('constructed canonicalRequest', { canonicalReqResult });
     }
     const sha256 = crypto.createHash('sha256');
-    const canonicalHex = sha256.update(canonicalReqResult, 'binary')
+    const canonicalHex = sha256
+        .update(canonicalReqResult, 'binary')
         .digest('hex');
-    const stringToSign = `AWS4-HMAC-SHA256\n${timestamp}\n` +
+    const stringToSign =
+        `AWS4-HMAC-SHA256\n${timestamp}\n` +
         `${credentialScope}\n${canonicalHex}`;
     return stringToSign;
 }

lib/auth/v4/createCanonicalRequest.ts

@@ -1,6 +1,6 @@
+import awsURIencode from './awsURIencode';
 import * as crypto from 'crypto';
 import * as queryString from 'querystring';
-import awsURIencode from './awsURIencode';
 
 /**
  * createCanonicalRequest - creates V4 canonical request

lib/auth/v4/headerAuthCheck.ts

@@ -56,8 +56,9 @@ export function check(
     if (payloadChecksum === 'STREAMING-AWS4-HMAC-SHA256-PAYLOAD') {
         log.trace('requesting streaming v4 auth');
         if (request.method !== 'PUT') {
-            log.debug('streaming v4 auth for put only',
+            log.debug('streaming v4 auth for put only', {
-                { method: 'auth/v4/headerAuthCheck.check' });
+                method: 'auth/v4/headerAuthCheck.check',
+            });
             return { err: errors.InvalidArgument };
         }
         if (!request.headers['x-amz-decoded-content-length']) {
@@ -82,9 +83,12 @@ export function check(
     if (xAmzDate) {
         const xAmzDateArr = xAmzDate.split('T');
         // check that x-amz- date has the correct format and after epochTime
-        if (xAmzDateArr.length === 2 && xAmzDateArr[0].length === 8
+        if (
-          && xAmzDateArr[1].length === 7
+            xAmzDateArr.length === 2 &&
-          && Number.parseInt(xAmzDateArr[0], 10) > 19700101) {
+            xAmzDateArr[0].length === 8 &&
+            xAmzDateArr[1].length === 7 &&
+            Number.parseInt(xAmzDateArr[0], 10) > 19700101
+        ) {
             // format of x-amz- date is ISO 8601: YYYYMMDDTHHMMSSZ
             timestamp = request.headers['x-amz-date'];
         }
@@ -92,18 +96,27 @@ export function check(
         timestamp = convertUTCtoISO8601(request.headers.date);
     }
     if (!timestamp) {
-        log.debug('missing or invalid date header',
+        log.debug('missing or invalid date header', {
-            { method: 'auth/v4/headerAuthCheck.check' });
+            method: 'auth/v4/headerAuthCheck.check',
-        return { err: errors.AccessDenied.
+        });
-            customizeDescription('Authentication requires a valid Date or ' +
+        return {
-          'x-amz-date header') };
+            err: errors.AccessDenied.customizeDescription(
+                'Authentication requires a valid Date or ' + 'x-amz-date header'
+            ),
+        };
     }
 
-    const validationResult = validateCredentials(credentialsArr, timestamp,
+    const validationResult = validateCredentials(
-        log);
+        credentialsArr,
+        timestamp,
+        log
+    );
     if (validationResult instanceof Error) {
-        log.debug('credentials in improper format', { credentialsArr,
+        log.debug('credentials in improper format', {
-            timestamp, validationResult });
+            credentialsArr,
+            timestamp,
+            validationResult,
+        });
         return { err: validationResult };
     }
     // credentialsArr is [accessKey, date, region, aws-service, aws4_request]
@@ -126,20 +139,23 @@ export function check(
     // expiry is as set out in the policy.
 
     // 15 minutes in seconds
-    const expiry = (15 * 60);
+    const expiry = 15 * 60;
     const isTimeSkewed = checkTimeSkew(timestamp, expiry, log);
     if (isTimeSkewed) {
         return { err: errors.RequestTimeTooSkewed };
     }
 
-    let proxyPath: string | undefined;
+    let proxyPath: string | null = null;
     if (request.headers.proxy_path) {
         try {
             proxyPath = decodeURIComponent(request.headers.proxy_path);
         } catch (err) {
             log.debug('invalid proxy_path header', { proxyPath, err });
-            return { err: errors.InvalidArgument.customizeDescription(
+            return {
-                'invalid proxy_path header') };
+                err: errors.InvalidArgument.customizeDescription(
+                    'invalid proxy_path header'
+                ),
+            };
         }
     }
 
@@ -152,14 +168,15 @@ export function check(
         timestamp,
         payloadChecksum,
         awsService: service,
-        proxyPath,
+        proxyPath: proxyPath!,
     });
     log.trace('constructed stringToSign', { stringToSign });
+    // TODO Why?
+    // @ts-ignore
     if (stringToSign instanceof Error) {
         return { err: stringToSign };
     }
 
-
     return {
         err: null,
         params: {

lib/auth/v4/queryAuthCheck.ts

@@ -1,6 +1,7 @@
 import { Logger } from 'werelogs';
 import * as constants from '../../constants';
 import errors from '../../errors';
+
 import constructStringToSign from './constructStringToSign';
 import { checkTimeSkew, convertAmzTimeToMs } from './timeUtils';
 import { validateCredentials, extractQueryParams } from './validateInputs';
@@ -38,11 +39,13 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
         return { err: errors.AccessDenied };
     }
 
-    const validationResult = validateCredentials(credential, timestamp,
+    const validationResult = validateCredentials(credential, timestamp, log);
-        log);
     if (validationResult instanceof Error) {
-        log.debug('credentials in improper format', { credential,
+        log.debug('credentials in improper format', {
-            timestamp, validationResult });
+            credential,
+            timestamp,
+            validationResult,
+        });
         return { err: validationResult };
     }
     const accessKey = credential[0];
@@ -56,14 +59,17 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
         return { err: errors.RequestTimeTooSkewed };
     }
 
-    let proxyPath: string | undefined;
+    let proxyPath: string | null = null;
     if (request.headers.proxy_path) {
         try {
             proxyPath = decodeURIComponent(request.headers.proxy_path);
         } catch (err) {
             log.debug('invalid proxy_path header', { proxyPath });
-            return { err: errors.InvalidArgument.customizeDescription(
+            return {
-                'invalid proxy_path header') };
+                err: errors.InvalidArgument.customizeDescription(
+                    'invalid proxy_path header'
+                ),
+            };
         }
     }
 
@@ -89,11 +95,12 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
         signedHeaders,
         payloadChecksum,
         timestamp,
-        credentialScope:
+        credentialScope: `${scopeDate}/${region}/${service}/${requestType}`,
-            `${scopeDate}/${region}/${service}/${requestType}`,
         awsService: service,
-        proxyPath,
+        proxyPath: proxyPath!,
     });
+    // TODO Why?
+    // @ts-ignore
     if (stringToSign instanceof Error) {
         return { err: stringToSign };
     }

lib/auth/v4/streamingV4/V4Transform.ts

@@ -1,21 +1,11 @@
 import { Transform } from 'stream';
 import async from 'async';
-import errors from '../../../errors';
 import { Logger } from 'werelogs';
-import Vault, { AuthV4RequestParams } from '../../Vault';
 import { Callback } from '../../backends/in_memory/types';
-
+import Vault from '../../Vault';
+import errors from '../../../errors';
 import constructChunkStringToSign from './constructChunkStringToSign';
 
-export type TransformParams = {
-    accessKey: string;
-    signatureFromRequest: string;
-    region: string;
-    scopeDate: string;
-    timestamp: string;
-    credentialScope: string;
-};
-
 /**
  * This class is designed to handle the chunks sent in a streaming
  * v4 Auth request
@@ -25,45 +15,60 @@ export default class V4Transform extends Transform {
     cb: Callback;
     accessKey: string;
     region: string;
+    /** Date parsed from headers in ISO8601. */
     scopeDate: string;
+    /** Date parsed from headers in ISO8601. */
     timestamp: string;
+    /** Items from auth header, plus the string 'aws4_request' joined with '/': timestamp/region/aws-service/aws4_request */
     credentialScope: string;
-    lastSignature: string;
+    lastSignature?: string;
     currentSignature?: string;
     haveMetadata: boolean;
     seekingDataSize: number;
     currentData?: any;
     dataCursor: number;
-    currentMetadata: any[];
+    currentMetadata: Buffer[];
     lastPieceDone: boolean;
     lastChunk: boolean;
     vault: Vault;
 
     /**
-     * @constructor
+     * @param {object} streamingV4Params - info for chunk authentication
-     * @param streamingV4Params - info for chunk authentication
+     * @param {string} streamingV4Params.accessKey - requester's accessKey
-     * @param streamingV4Params.accessKey - requester's accessKey
+     * @param {string} streamingV4Params.signatureFromRequest - signature
-     * @param streamingV4Params.signatureFromRequest - signature
      * sent with headers
-     * @param streamingV4Params.region - region sent with auth header
+     * @param {string} streamingV4Params.region - region sent with auth header
-     * @param streamingV4Params.scopeDate - date sent with auth header
+     * @param {string} streamingV4Params.scopeDate - date sent with auth header
-     * @param streamingV4Params.timestamp - date parsed from headers
+     * @param {string} streamingV4Params.timestamp - date parsed from headers
      * in ISO 8601 format: YYYYMMDDTHHMMSSZ
-     * @param streamingV4Params.credentialScope - items from auth
+     * @param {string} streamingV4Params.credentialScope - items from auth
      * header plus the string 'aws4_request' joined with '/':
      * timestamp/region/aws-service/aws4_request
-     * @param vault - Vault instance passed from CloudServer
+     * @param {object} vault - Vault instance passed from CloudServer
-     * @param log - logger object
+     * @param {object} log - logger object
-     * @param cb - callback to api
+     * @param {function} cb - callback to api
      */
     constructor(
-        streamingV4Params: TransformParams,
+        streamingV4Params: {
+            accessKey: string,
+            signatureFromRequest: string,
+            region: string,
+            scopeDate: string,
+            timestamp: string,
+            credentialScope: string
+        },
         vault: Vault,
         log: Logger,
-        cb: Callback,
+        cb: Callback
     ) {
-        const { accessKey, signatureFromRequest, region, scopeDate, timestamp,
+        const {
-            credentialScope } = streamingV4Params;
+            accessKey,
+            signatureFromRequest,
+            region,
+            scopeDate,
+            timestamp,
+            credentialScope,
+        } = streamingV4Params;
         super({});
         this.log = log;
         this.cb = cb;
@@ -113,32 +118,34 @@ export default class V4Transform extends Transform {
             this.currentMetadata.push(remainingPlusStoredMetadata);
             return { completeMetadata: false };
         }
-        let fullMetadata = remainingPlusStoredMetadata.slice(0,
+        let fullMetadata = remainingPlusStoredMetadata.slice(0, lineBreakIndex);
-            lineBreakIndex);
 
         // handle extra line break on end of data chunk
         if (fullMetadata.length === 0) {
-            const chunkWithoutLeadingLineBreak = remainingPlusStoredMetadata
+            const chunkWithoutLeadingLineBreak =
-                .slice(2);
+                remainingPlusStoredMetadata.slice(2);
             // find second line break
             lineBreakIndex = chunkWithoutLeadingLineBreak.indexOf('\r\n');
             if (lineBreakIndex < 0) {
                 this.currentMetadata.push(chunkWithoutLeadingLineBreak);
                 return { completeMetadata: false };
             }
-            fullMetadata = chunkWithoutLeadingLineBreak.slice(0,
+            fullMetadata = chunkWithoutLeadingLineBreak.slice(
-                lineBreakIndex);
+                0,
+                lineBreakIndex
+            );
         }
 
         const splitMeta = fullMetadata.toString().split(';');
         this.log.trace('parsed full metadata for chunk', { splitMeta });
         if (splitMeta.length !== 2) {
-            this.log.trace('chunk body did not contain correct ' +
+            this.log.trace(
-            'metadata format');
+                'chunk body did not contain correct ' + 'metadata format'
+            );
             return { err: errors.InvalidArgument };
         }
         // chunk-size is sent in hex
-        const dataSize = Number.parseInt(splitMeta[0], 16);
+        let dataSize = Number.parseInt(splitMeta[0], 16);
         if (Number.isNaN(dataSize)) {
             this.log.trace('chunk body did not contain valid size');
             return { err: errors.InvalidArgument };
@@ -165,8 +172,9 @@ export default class V4Transform extends Transform {
             completeMetadata: true,
             // start slice at lineBreak plus 2 to remove line break at end of
             // metadata piece since length of '\r\n' is 2
-            unparsedChunk: remainingPlusStoredMetadata
+            unparsedChunk: remainingPlusStoredMetadata.slice(
-                .slice(lineBreakIndex + 2),
+                lineBreakIndex + 2
+            ),
         };
     }
 
@@ -177,51 +185,54 @@ export default class V4Transform extends Transform {
      * @param done - callback to _transform
      * @return executes callback with err if applicable
      */
-    _authenticate(dataToSend: Buffer | null, done: Callback) {
+    _authenticate(dataToSend: Buffer | null, done: (err?: Error) => void) {
         // use prior sig to construct new string to sign
-        const stringToSign = constructChunkStringToSign(this.timestamp,
+        const stringToSign = constructChunkStringToSign(
-            this.credentialScope, this.lastSignature, dataToSend ?? undefined);
+            this.timestamp,
-        this.log.trace('constructed chunk string to sign',
+            this.credentialScope,
-            { stringToSign });
+            this.lastSignature!,
+            dataToSend
+        );
+        this.log.trace('constructed chunk string to sign', { stringToSign });
         // once used prior sig to construct string to sign, reassign
         // lastSignature to current signature
-        this.lastSignature = this.currentSignature!;
+        this.lastSignature = this.currentSignature;
-        const vaultParams: AuthV4RequestParams = {
+        const vaultParams = {
             log: this.log,
             data: {
                 accessKey: this.accessKey,
-                signatureFromRequest: this.currentSignature!,
+                signatureFromRequest: this.currentSignature,
                 region: this.region,
                 scopeDate: this.scopeDate,
                 stringToSign,
-                // TODO FIXME This can not work
-                // @ts-expect-errors
                 timestamp: this.timestamp,
                 credentialScope: this.credentialScope,
             },
         };
-        return this.vault.authenticateV4Request(vaultParams, null, err => {
+        return this.vault.authenticateV4Request(vaultParams, null, (err: Error) => {
             if (err) {
-                this.log.trace('err from vault on streaming v4 auth',
+                this.log.trace('err from vault on streaming v4 auth', {
-                    { error: err, paramsSentToVault: vaultParams.data });
+                    error: err,
+                    paramsSentToVault: vaultParams.data,
+                });
                 return done(err);
             }
             return done();
         });
     }
 
-
+    // TODO encoding unused. Why?
     /**
      * This function will parse the chunk into metadata and data,
      * use the metadata to authenticate with vault and send the
      * data on to be stored if authentication passes
      *
      * @param chunk - chunk from request body
-     * @param _encoding - Data encoding unused
+     * @param encoding - Data encoding
      * @param callback - Callback(err, justDataChunk, encoding)
      * @return executes callback with err if applicable
      */
-    _transform(chunk: Buffer, _encoding: string, callback: Callback) {
+    _transform(chunk: Buffer, _encoding: string, callback: (err?: Error) => void) {
         // 'chunk' here is the node streaming chunk
         // transfer-encoding chunks should be of the format:
         // string(IntHexBase(chunk-size)) + ";chunk-signature=" +
@@ -230,9 +241,10 @@ export default class V4Transform extends Transform {
 
         if (this.lastPieceDone) {
             const slice = chunk.slice(0, 10);
-            this.log.trace('received chunk after end.' +
+            this.log.trace(
-            'See first 10 bytes of chunk',
+                'received chunk after end.' + 'See first 10 bytes of chunk',
-            { chunk: slice.toString() });
+                { chunk: slice.toString() }
+            );
             return callback();
         }
         let unparsedChunk = chunk;
@@ -241,10 +253,11 @@ export default class V4Transform extends Transform {
             // test function
             () => chunkLeftToEvaluate,
             // async function
-            done => {
+            (done) => {
                 if (!this.haveMetadata) {
-                    this.log.trace('do not have metadata so calling ' +
+                    this.log.trace(
-                    '_parseMetadata');
+                        'do not have metadata so calling ' + '_parseMetadata'
+                    );
                     // need to parse our metadata
                     const parsedMetadataResults =
                         this._parseMetadata(unparsedChunk);
@@ -258,13 +271,11 @@ export default class V4Transform extends Transform {
                     }
                     // have metadata so reset unparsedChunk to remaining
                     // without metadata piece
-                    // TODO Is that okay?
+                    unparsedChunk = parsedMetadataResults.unparsedChunk!;
-                    // @ts-expect-errors
-                    unparsedChunk = parsedMetadataResults.unparsedChunk;
                 }
                 if (this.lastChunk) {
                     this.log.trace('authenticating final chunk with no data');
-                    return this._authenticate(null, err => {
+                    return this._authenticate(null, (err) => {
                         if (err) {
                             return done(err);
                         }
@@ -283,17 +294,18 @@ export default class V4Transform extends Transform {
                 }
                 // parse just the next data piece without \r\n at the end
                 // (therefore, minus 2)
-                const nextDataPiece =
+                const nextDataPiece = unparsedChunk.slice(
-                    unparsedChunk.slice(0, this.seekingDataSize - 2);
+                    0,
+                    this.seekingDataSize - 2
+                );
                 // add parsed data piece to other currentData pieces
                 // so that this.currentData is the full data piece
                 nextDataPiece.copy(this.currentData, this.dataCursor);
-                return this._authenticate(this.currentData, err => {
+                return this._authenticate(this.currentData, (err) => {
                     if (err) {
                         return done(err);
                     }
-                    unparsedChunk =
+                    unparsedChunk = unparsedChunk.slice(this.seekingDataSize);
-                        unparsedChunk.slice(this.seekingDataSize);
                     this.push(this.currentData);
                     this.haveMetadata = false;
                     this.seekingDataSize = -1;
@@ -304,13 +316,13 @@ export default class V4Transform extends Transform {
                 });
             },
             // final callback
-            err => {
+            (err) => {
                 if (err) {
                     return this.cb(err as any);
                 }
                 // get next chunk
                 return callback();
-            },
+            }
         );
     }
 }

lib/auth/v4/streamingV4/constructChunkStringToSign.ts

@@ -3,33 +3,34 @@ import * as constants from '../../../constants';
 
 /**
  * Constructs stringToSign for chunk
- * @param timestamp - date parsed from headers
+ * @param timestamp - date parsed from headers in ISO 8601 format: YYYYMMDDTHHMMSSZ
- * in ISO 8601 format: YYYYMMDDTHHMMSSZ
+ * @param credentialScope - items from auth header plus the string
- * @param credentialScope - items from auth
+ *   'aws4_request' joined with '/':
- * header plus the string 'aws4_request' joined with '/':
  * timestamp/region/aws-service/aws4_request
  * @param lastSignature - signature from headers or prior chunk
  * @param justDataChunk - data portion of chunk
- * @returns stringToSign
  */
 export default function constructChunkStringToSign(
     timestamp: string,
     credentialScope: string,
     lastSignature: string,
-    justDataChunk?: Buffer | string,
+    justDataChunk: string | Buffer | null
-) {
+): string {
     let currentChunkHash: string;
     // for last chunk, there will be no data, so use emptyStringHash
     if (!justDataChunk) {
         currentChunkHash = constants.emptyStringHash;
     } else {
-        const hash = crypto.createHash('sha256');
+        let hash = crypto.createHash('sha256');
-        const temp = justDataChunk instanceof Buffer
+        currentChunkHash = (
-            ? hash.update(justDataChunk)
+            typeof justDataChunk === 'string'
-            : hash.update(justDataChunk, 'binary');
+                ? hash.update(justDataChunk, 'binary')
-        currentChunkHash = temp.digest('hex');
+                : hash.update(justDataChunk)
+        ).digest('hex');
     }
-    return `AWS4-HMAC-SHA256-PAYLOAD\n${timestamp}\n` +
+    return (
+        `AWS4-HMAC-SHA256-PAYLOAD\n${timestamp}\n` +
         `${credentialScope}\n${lastSignature}\n` +
-        `${constants.emptyStringHash}\n${currentChunkHash}`;
+        `${constants.emptyStringHash}\n${currentChunkHash}`
+    );
 }

lib/auth/v4/validateInputs.ts

@@ -39,20 +39,27 @@ export function validateCredentials(
     // convert timestamp to format of scopeDate YYYYMMDD
     const timestampDate = timestamp.split('T')[0];
     if (scopeDate.length !== 8 || scopeDate !== timestampDate) {
-        log.warn('scope date must be the same date as the timestamp date',
+        log.warn('scope date must be the same date as the timestamp date', {
-            { scopeDate, timestampDate });
+            scopeDate,
+            timestampDate,
+        });
         return errors.RequestTimeTooSkewed;
     }
-    if (service !== 's3' && service !== 'iam' && service !== 'ring' &&
+    if (
-        service !== 'sts') {
+        service !== 's3' &&
+        service !== 'iam' &&
+        service !== 'ring' &&
+        service !== 'sts'
+    ) {
         log.warn('service in credentials is not one of s3/iam/ring/sts', {
             service,
         });
         return errors.InvalidArgument;
     }
     if (requestType !== 'aws4_request') {
-        log.warn('requestType contained in params is not aws4_request',
+        log.warn('requestType contained in params is not aws4_request', {
-            { requestType });
+            requestType,
+        });
         return errors.InvalidArgument;
     }
     return {};
@@ -78,8 +85,9 @@ export function extractQueryParams(
 
     // Do not need the algorithm sent back
     if (queryObj['X-Amz-Algorithm'] !== 'AWS4-HMAC-SHA256') {
-        log.warn('algorithm param incorrect',
+        log.warn('algorithm param incorrect', {
-            { algo: queryObj['X-Amz-Algorithm'] });
+            algo: queryObj['X-Amz-Algorithm'],
+        });
         return authParams;
     }
 
@@ -92,7 +100,6 @@ export function extractQueryParams(
         return authParams;
     }
 
-
     const signature = queryObj['X-Amz-Signature'];
     if (signature && signature.length === 64) {
         authParams.signatureFromRequest = signature;
@@ -105,14 +112,15 @@ export function extractQueryParams(
     if (timestamp && timestamp.length === 16) {
         authParams.timestamp = timestamp;
     } else {
-        log.warn('missing or invalid timestamp',
+        log.warn('missing or invalid timestamp', {
-            { timestamp: queryObj['X-Amz-Date'] });
+            timestamp: queryObj['X-Amz-Date'],
+        });
         return authParams;
     }
 
     const expiry = Number.parseInt(queryObj['X-Amz-Expires'] ?? 'nope', 10);
     const sevenDays = 604800;
-    if (expiry && (expiry > 0 && expiry <= sevenDays)) {
+    if (expiry && expiry > 0 && expiry <= sevenDays) {
         authParams.expiry = expiry;
     } else {
         log.warn('invalid expiry', { expiry });
@@ -130,7 +138,6 @@ export function extractQueryParams(
     return authParams;
 }
 
-
 /**
  * Extract and validate components from auth header
  * @param authHeader - authorization header from request
@@ -160,22 +167,28 @@ export function extractAuthItems(authHeader: string, log: Logger) {
     ) {
         // @ts-ignore
         authItems.credentialsArr = credentialStr
-            .trim().replace('Credential=', '').split('/');
+            .trim()
+            .replace('Credential=', '')
+            .split('/');
     } else {
         log.warn('missing credentials');
     }
     log.trace('signed headers from request', { signedHeadersStr });
-    if (signedHeadersStr && signedHeadersStr.trim()
+    if (
-        .startsWith('SignedHeaders=')) {
+        signedHeadersStr &&
+        signedHeadersStr.trim().startsWith('SignedHeaders=')
+    ) {
         authItems.signedHeaders = signedHeadersStr
-            .trim().replace('SignedHeaders=', '');
+            .trim()
+            .replace('SignedHeaders=', '');
     } else {
         log.warn('missing signed headers');
     }
     log.trace('signature from request', { signatureStr });
     if (signatureStr && signatureStr.trim().startsWith('Signature=')) {
         authItems.signatureFromRequest = signatureStr
-            .trim().replace('Signature=', '');
+            .trim()
+            .replace('Signature=', '');
     } else {
         log.warn('missing signature');
     }
@@ -196,9 +209,11 @@ export function areSignedHeadersComplete(signedHeaders: string, allHeaders: Head
     }
     const headers = Object.keys(allHeaders);
     for (let i = 0; i < headers.length; i++) {
-        if ((headers[i].startsWith('x-amz-')
+        if (
-        || headers[i].startsWith('x-scal-'))
+            (headers[i].startsWith('x-amz-') ||
-        && signedHeadersList.indexOf(headers[i]) === -1) {
+                headers[i].startsWith('x-scal-')) &&
+            signedHeadersList.indexOf(headers[i]) === -1
+        ) {
             return false;
         }
     }

lib/clustering/ClusterRPC.ts

@@ -1,569 +0,0 @@
-import cluster, { Worker } from 'cluster';
-import * as werelogs from 'werelogs';
-
-import { default as errors } from '../../lib/errors';
-
-const rpcLogger = new werelogs.Logger('ClusterRPC');
-
-/**
- * Remote procedure calls support between cluster workers.
- *
- * When using the cluster module, new processes are forked and are
- * dispatched workloads, usually HTTP requests. The ClusterRPC module
- * implements a RPC system to send commands to all cluster worker
- * processes at once from any particular worker, and retrieve their
- * individual command results, like a distributed map operation.
- *
- * The existing nodejs cluster IPC channel is setup from the primary
- * to each worker, but not between workers, so there has to be a hop
- * by the primary.
- *
- * How a command is treated:
- *
- * - a worker sends a command message to the primary
- *
- * - the primary then forwards that command to each existing worker
- *   (including the requestor)
- *
- * - each worker then executes the command and returns a result or an
- *   error
- *
- * - the primary gathers all workers results into an array
- *
- * - finally, the primary dispatches the results array to the original
- *   requesting worker
- *
- *
- * Limitations:
- *
- * - The command payload must be serializable, which means that:
- *   - it should not contain circular references
- *   - it should be of a reasonable size to be sent in a single RPC message
- *
- * - The "toWorkers" parameter of value "*" targets the set of workers
- *   that are available at the time the command is dispatched. Any new
- *   worker spawned after the command has been dispatched for
- *   processing, but before the command completes, don't execute
- *   the command and hence are not part of the results array.
- *
- *
- * To set it up:
- *
- * - On the primary:
- *     if (cluster.isPrimary) {
- *         setupRPCPrimary();
- *     }
- *
- * - On the workers:
- *     if (!cluster.isPrimary) {
- *         setupRPCWorker({
- *             handler1: (payload: object, uids: string, callback: HandlerCallback) => void,
- *             handler2: ...
- *         });
- *     }
- *     Handler functions will be passed the command payload, request
- *     serialized uids, and must call the callback when the worker is done
- *     processing the command:
- *         callback(error: Error | null | undefined, result?: any)
- *
- * When this setup is done, any worker can start sending commands by calling
- * the async function sendWorkerCommand().
- */
-
-// exported types
-
-export type ResultObject = {
-    error: Error | null;
-    result: any;
-};
-
-/**
- * saved Promise for sendWorkerCommand
- */
-export type CommandPromise = {
-    resolve: (results?: ResultObject[]) => void;
-    reject: (error: Error) => void;
-    timeout: NodeJS.Timeout | null;
-};
-export type HandlerCallback = (error: (Error & { code?: number }) | null | undefined, result?: any) => void;
-export type HandlerFunction = (payload: object, uids: string, callback: HandlerCallback) => void;
-export type HandlersMap = {
-    [index: string]: HandlerFunction;
-};
-export type PrimaryHandlerFunction = (worker: Worker, payload: object, uids: string, callback: HandlerCallback) => void;
-export type PrimaryHandlersMap = Record<string, PrimaryHandlerFunction>;
-
-// private types
-
-type RPCMessage<T extends string, P> = {
-    type: T;
-    uids: string;
-    payload: P;
-};
-
-type RPCCommandMessage = RPCMessage<'cluster-rpc:command', any> & {
-    toWorkers: string;
-    toHandler: string;
-};
-
-type MarshalledResultObject = {
-    error: string | null;
-    errorCode?: number;
-    result: any;
-};
-
-type RPCCommandResultMessage = RPCMessage<'cluster-rpc:commandResult', MarshalledResultObject>;
-
-type RPCCommandResultsMessage = RPCMessage<'cluster-rpc:commandResults', {
-    results: MarshalledResultObject[];
-}>;
-
-type RPCCommandErrorMessage = RPCMessage<'cluster-rpc:commandError', {
-    error: string;
-}>;
-
-interface RPCSetupOptions {
-    /**
-     * As werelogs is not a peerDependency, arsenal and a parent project
-     * might have their own separate versions duplicated in dependencies.
-     * The config are therefore not shared.
-     * Use this to propagate werelogs config to arsenal's ClusterRPC.
-     */
-    werelogsConfig?: Parameters<typeof werelogs.configure>[0];
-};
-
-/**
- * In primary: store worker IDs that are waiting to be dispatched
- * their command's results, as a mapping.
- */
-const uidsToWorkerId: {
-    [index: string]: number;
-} = {};
-
-
-/**
- * In primary: store worker responses for commands in progress as a
- * mapping.
- *
- * Result objects are 'null' while the worker is still processing the
- * command. When a worker finishes processing it stores the result as:
- *    {
- *        error: string | null,
- *        result: any
- *    }
- */
-const uidsToCommandResults: {
-    [index: string]: {
-        [index: number]: MarshalledResultObject | null;
-    };
-} = {};
-
-/**
- * In workers: store promise callbacks for commands waiting to be
- * dispatched, as a mapping.
- */
-const uidsToCommandPromise: {
-    [index: string]: CommandPromise;
-} = {};
-
-
-function _isRpcMessage(message) {
-    return (message !== null &&
-            typeof message === 'object' &&
-            typeof message.type === 'string' &&
-            message.type.startsWith('cluster-rpc:'));
-}
-
-/**
- * Setup cluster RPC system on the primary
- *
- * @param {object} [handlers] - mapping of handler names to handler functions
- *     handler function:
- *         `handler({Worker} worker, {object} payload, {string} uids, {function} callback)`
- *     handler callback must be called when worker is done with the command:
- *         `callback({Error|null} error, {any} [result])`
- * @return {undefined}
- */
-export function setupRPCPrimary(handlers?: PrimaryHandlersMap, options?: RPCSetupOptions) {
-    if (options?.werelogsConfig) {
-        werelogs.configure(options.werelogsConfig);
-    }
-    cluster.on('message', (worker, message) => {
-        if (_isRpcMessage(message)) {
-            _handlePrimaryMessage(worker, message, handlers);
-        }
-    });
-}
-
-/**
- * Setup RPCs on a cluster worker process
- *
- * @param {object} handlers - mapping of handler names to handler functions
- *     handler function:
- *         handler({object} payload, {string} uids, {function} callback)
- *     handler callback must be called when worker is done with the command:
- *         callback({Error|null} error, {any} [result])
- * @return {undefined}
- * }
- */
-export function setupRPCWorker(handlers: HandlersMap, options?: RPCSetupOptions) {
-    if (!process.send) {
-        throw new Error('fatal: cannot setup cluster RPC: "process.send" is not available');
-    }
-    if (options?.werelogsConfig) {
-        werelogs.configure(options.werelogsConfig);
-    }
-    process.on('message', (message: RPCCommandMessage | RPCCommandResultsMessage) => {
-        if (_isRpcMessage(message)) {
-            _handleWorkerMessage(message, handlers);
-        }
-    });
-}
-
-/**
- * Send a command for workers to execute in parallel, and wait for results
- *
- * @param {string} toWorkers - which workers should execute the command
- *     Currently the supported values are:
- *         - "*", meaning all workers will execute the command
- *         - "PRIMARY", meaning primary process will execute the command
- * @param {string} toHandler - name of handler that will execute the
- * command in workers, as declared in setupRPCWorker() parameter object
- * @param {string} uids - unique identifier of the command, must be
- * unique across all commands in progress
- * @param {object} payload - message payload, sent as-is to the handler
- * @param {number} [timeoutMs=60000] - timeout the command with a
- * "RequestTimeout" error after this number of milliseconds - set to 0
- * to disable timeouts (the command may then hang forever)
- * @returns {Promise}
- */
-export async function sendWorkerCommand(
-    toWorkers: string,
-    toHandler: string,
-    uids: string,
-    payload: object,
-    timeoutMs: number = 60000
-) {
-    if (typeof uids !== 'string') {
-        rpcLogger.error('missing or invalid "uids" field', { uids });
-        throw errors.MissingParameter;
-    }
-    if (uidsToCommandPromise[uids] !== undefined) {
-        rpcLogger.error('a command is already in progress with same uids', { uids });
-        throw errors.OperationAborted;
-    }
-    rpcLogger.info('sending command', { toWorkers, toHandler, uids, payload });
-    return new Promise((resolve, reject) => {
-        let timeout: NodeJS.Timeout | null = null;
-        if (timeoutMs) {
-            timeout = setTimeout(() => {
-                delete uidsToCommandPromise[uids];
-                reject(errors.RequestTimeout);
-            }, timeoutMs);
-        }
-        uidsToCommandPromise[uids] = { resolve, reject, timeout };
-        const message: RPCCommandMessage = {
-            type: 'cluster-rpc:command',
-            toWorkers,
-            toHandler,
-            uids,
-            payload,
-        };
-        return process.send?.(message);
-    });
-}
-
-/**
- * Get the number of commands in flight
- * @returns {number}
- */
-export function getPendingCommandsCount() {
-    return Object.keys(uidsToCommandPromise).length;
-}
-
-
-function _dispatchCommandResultsToWorker(
-    worker: Worker,
-    uids: string,
-    resultsArray: MarshalledResultObject[]
-): void {
-    const message: RPCCommandResultsMessage = {
-        type: 'cluster-rpc:commandResults',
-        uids,
-        payload: {
-            results: resultsArray,
-        },
-    };
-    worker.send(message);
-}
-
-function _dispatchCommandErrorToWorker(
-    worker: Worker,
-    uids: string,
-    error: Error,
-): void {
-    const message: RPCCommandErrorMessage = {
-        type: 'cluster-rpc:commandError',
-        uids,
-        payload: {
-            error: error.message,
-        },
-    };
-    worker.send(message);
-}
-
-function _sendPrimaryCommandResult(
-    worker: Worker,
-    uids: string,
-    error: (Error & { code?: number }) | null | undefined,
-    result?: any
-): void {
-    const message: RPCCommandResultsMessage = {
-        type: 'cluster-rpc:commandResults',
-        uids,
-        payload: {
-            results: [{ error: error?.message || null, errorCode: error?.code, result }],
-        },
-    };
-    worker.send?.(message);
-}
-
-function _handlePrimaryCommandMessage(
-    fromWorker: Worker,
-    logger: any,
-    message: RPCCommandMessage,
-    handlers?: PrimaryHandlersMap
-): void {
-    const { toWorkers, toHandler, uids, payload } = message;
-    if (toWorkers === '*') {
-        if (uidsToWorkerId[uids] !== undefined) {
-            logger.warn('new command already has a waiting worker with same uids', {
-                uids, workerId: uidsToWorkerId[uids],
-            });
-            return undefined;
-        }
-        const commandResults = {};
-        for (const workerId of Object.keys(cluster.workers || {})) {
-            commandResults[workerId] = null;
-        }
-        uidsToWorkerId[uids] = fromWorker?.id;
-        uidsToCommandResults[uids] = commandResults;
-
-        for (const [workerId, worker] of Object.entries(cluster.workers || {})) {
-            logger.debug('sending command message to worker', {
-                workerId, toHandler, payload,
-            });
-            if (worker) {
-                worker.send(message);
-            }
-        }
-    } else if (toWorkers === 'PRIMARY') {
-        const { toHandler, uids, payload } = message;
-        const cb: HandlerCallback = (err, result) => _sendPrimaryCommandResult(fromWorker, uids, err, result);
-
-        if (toHandler in (handlers || {})) {
-            return handlers![toHandler](fromWorker, payload, uids, cb);
-        }
-        logger.error('no such handler in "toHandler" field from worker command message', {
-            toHandler,
-        });
-        return cb(errors.NotImplemented);
-    } else {
-        logger.error('unsupported "toWorkers" field from worker command message', {
-            toWorkers,
-        });
-        if (fromWorker) {
-            _dispatchCommandErrorToWorker(fromWorker, uids, errors.NotImplemented);
-        }
-    }
-}
-
-function _handlePrimaryCommandResultMessage(
-    fromWorkerId: number,
-    logger: any,
-    message: RPCCommandResultMessage
-): void {
-    const { uids, payload } = message;
-    const commandResults = uidsToCommandResults[uids];
-    if (!commandResults) {
-        logger.warn('received command response message from worker for command not in flight', {
-            workerId: fromWorkerId,
-            uids,
-        });
-        return undefined;
-    }
-    if (commandResults[fromWorkerId] === undefined) {
-        logger.warn('received command response message with unexpected worker ID', {
-            workerId: fromWorkerId,
-            uids,
-        });
-        return undefined;
-    }
-    if (commandResults[fromWorkerId] !== null) {
-        logger.warn('ignoring duplicate command response from worker', {
-            workerId: fromWorkerId,
-            uids,
-        });
-        return undefined;
-    }
-    commandResults[fromWorkerId] = payload;
-    const commandResultsArray = Object.values(commandResults);
-    if (commandResultsArray.every(response => response !== null)) {
-        logger.debug('all workers responded to command', { uids });
-        const completeCommandResultsArray = <MarshalledResultObject[]> commandResultsArray;
-        const toWorkerId = uidsToWorkerId[uids];
-        const toWorker = cluster.workers?.[toWorkerId];
-
-        delete uidsToCommandResults[uids];
-        delete uidsToWorkerId[uids];
-
-        if (!toWorker) {
-            logger.warn('worker shut down while its command was executing', {
-                workerId: toWorkerId, uids,
-            });
-            return undefined;
-        }
-        // send back response to original worker
-        _dispatchCommandResultsToWorker(toWorker, uids, completeCommandResultsArray);
-    }
-}
-
-function _handlePrimaryMessage(
-    fromWorker: Worker,
-    message: RPCCommandMessage | RPCCommandResultMessage,
-    handlers?: PrimaryHandlersMap
-): void {
-    const { type: messageType, uids } = message;
-    const logger = rpcLogger.newRequestLoggerFromSerializedUids(uids);
-    logger.debug('primary received message from worker', {
-        workerId: fromWorker?.id, rpcMessage: message,
-    });
-    if (messageType === 'cluster-rpc:command') {
-        return _handlePrimaryCommandMessage(fromWorker, logger, message, handlers);
-    }
-    if (messageType === 'cluster-rpc:commandResult') {
-        return _handlePrimaryCommandResultMessage(fromWorker?.id, logger, message);
-    }
-    logger.error('unsupported message type', {
-        workerId: fromWorker?.id, messageType, uids,
-    });
-    return undefined;
-}
-
-function _sendWorkerCommandResult(
-    uids: string,
-    error: Error | null | undefined,
-    result?: any
-): void {
-    const message: RPCCommandResultMessage = {
-        type: 'cluster-rpc:commandResult',
-        uids,
-        payload: {
-            error: error ? error.message : null,
-            result,
-        },
-    };
-    process.send?.(message);
-}
-
-function _handleWorkerCommandMessage(
-    logger: any,
-    message: RPCCommandMessage,
-    handlers: HandlersMap
-): void {
-    const { toHandler, uids, payload } = message;
-    const cb: HandlerCallback = (err, result) => _sendWorkerCommandResult(uids, err, result);
-
-    if (toHandler in handlers) {
-        return handlers[toHandler](payload, uids, cb);
-    }
-    logger.error('no such handler in "toHandler" field from worker command message', {
-        toHandler,
-    });
-    return cb(errors.NotImplemented);
-}
-
-function _handleWorkerCommandResultsMessage(
-    logger: any,
-    message: RPCCommandResultsMessage,
-): void {
-    const { uids, payload } = message;
-    const { results } = payload;
-    const commandPromise: CommandPromise = uidsToCommandPromise[uids];
-    if (commandPromise === undefined) {
-        logger.error('missing promise for command results', { uids, payload });
-        return undefined;
-    }
-    if (commandPromise.timeout) {
-        clearTimeout(commandPromise.timeout);
-    }
-    delete uidsToCommandPromise[uids];
-    const unmarshalledResults = results.map(workerResult => {
-        let workerError: Error | null = null;
-        if (workerResult.error) {
-            if (workerResult.error in errors) {
-                workerError = errors[workerResult.error];
-            } else {
-                workerError = new Error(workerResult.error);
-            }
-        }
-        if (workerError && workerResult.errorCode) {
-            (workerError as Error & { code: number }).code = workerResult.errorCode;
-        }
-        const unmarshalledResult: ResultObject = {
-            error: workerError,
-            result: workerResult.result,
-        };
-        return unmarshalledResult;
-    });
-    return commandPromise.resolve(unmarshalledResults);
-}
-
-function _handleWorkerCommandErrorMessage(
-    logger: any,
-    message: RPCCommandErrorMessage,
-): void {
-    const { uids, payload } = message;
-    const { error } = payload;
-    const commandPromise: CommandPromise = uidsToCommandPromise[uids];
-    if (commandPromise === undefined) {
-        logger.error('missing promise for command results', { uids, payload });
-        return undefined;
-    }
-    if (commandPromise.timeout) {
-        clearTimeout(commandPromise.timeout);
-    }
-    delete uidsToCommandPromise[uids];
-    let commandError: Error | null = null;
-    if (error in errors) {
-        commandError = errors[error];
-    } else {
-        commandError = new Error(error);
-    }
-    return commandPromise.reject(<Error> commandError);
-}
-
-function _handleWorkerMessage(
-    message: RPCCommandMessage | RPCCommandResultsMessage | RPCCommandErrorMessage,
-    handlers: HandlersMap
-): void {
-    const { type: messageType, uids } = message;
-    const workerId = cluster.worker?.id;
-    const logger = rpcLogger.newRequestLoggerFromSerializedUids(uids);
-    logger.debug('worker received message from primary', {
-        workerId, rpcMessage: message,
-    });
-    if (messageType === 'cluster-rpc:command') {
-        return _handleWorkerCommandMessage(logger, message, handlers);
-    }
-    if (messageType === 'cluster-rpc:commandResults') {
-        return _handleWorkerCommandResultsMessage(logger, message);
-    }
-    if (messageType === 'cluster-rpc:commandError') {
-        return _handleWorkerCommandErrorMessage(logger, message);
-    }
-    logger.error('unsupported message type', {
-        workerId, messageType,
-    });
-    return undefined;
-}

lib/constants.ts

@@ -1,13 +1,12 @@
 import * as crypto from 'crypto';
 
-// The min value here is to manage further backward compat if we
+// The min value here is to manage further backward compat if we need it
-// need it
 // Default value
-export const vaultGeneratedIamSecurityTokenSizeMin = 128;
+const vaultGeneratedIamSecurityTokenSizeMin = 128;
 // Safe to assume that a typical token size is less than 8192 bytes
-export const vaultGeneratedIamSecurityTokenSizeMax = 8192;
+const vaultGeneratedIamSecurityTokenSizeMax = 8192;
 // Base-64
-export const vaultGeneratedIamSecurityTokenPattern = /^[A-Za-z0-9/+=]*$/;
+const vaultGeneratedIamSecurityTokenPattern = /^[A-Za-z0-9/+=]*$/;
 
 // info about the iam security token
 export const iamSecurityToken = {
@@ -35,13 +34,7 @@ export const emptyFileMd5 = 'd41d8cd98f00b204e9800998ecf8427e';
 // Version 4 add the Creation-Time and Content-Language attributes,
 //     and add support for x-ms-meta-* headers in UserMetadata
 // Version 5 adds the azureInfo structure
-// Version 6 adds a "deleted" flag that is updated to true before
+export const mdModelVersion = 5;
-// the object gets deleted. This is done to keep object metadata in the
-// oplog when deleting the object, as oplog deletion events don't contain
-// any metadata of the object.
-// version 6 also adds the "isPHD" flag that is used to indicate that the master
-// object is a placeholder and is not up to date.
-export const mdModelVersion = 6;
 /*
  * Splitter is used to build the object name for the overview of a
  * multipart upload and to build the object names for each part of a
@@ -94,6 +87,7 @@ export const zenkoSeparator = ':';
 /* eslint-disable camelcase */
 export const externalBackends = { aws_s3: true, azure: true, gcp: true, pfs: true };
 export const replicationBackends = { aws_s3: true, azure: true, gcp: true };
+
 // hex digest of sha256 hash of empty string:
 export const emptyStringHash = crypto.createHash('sha256')
     .update('', 'binary').digest('hex');
@@ -132,19 +126,6 @@ export const supportedNotificationEvents = new Set([
     's3:ObjectRemoved:*',
     's3:ObjectRemoved:Delete',
     's3:ObjectRemoved:DeleteMarkerCreated',
-    's3:Replication:OperationFailedReplication',
-    's3:ObjectTagging:*',
-    's3:ObjectTagging:Put',
-    's3:ObjectTagging:Delete',
-    's3:ObjectAcl:Put',
-    's3:ObjectRestore:*',
-    's3:ObjectRestore:Post',
-    's3:ObjectRestore:Completed',
-    's3:ObjectRestore:Delete',
-    's3:LifecycleTransition',
-    's3:LifecycleExpiration:*',
-    's3:LifecycleExpiration:DeleteMarkerCreated',
-    's3:LifecycleExpiration:Delete',
 ]);
 export const notificationArnPrefix = 'arn:scality:bucketnotif';
 // HTTP server keep-alive timeout is set to a higher value than
@@ -163,15 +144,4 @@ export const supportedLifecycleRules = [
     'expiration',
     'noncurrentVersionExpiration',
     'abortIncompleteMultipartUpload',
-    'transitions',
-    'noncurrentVersionTransition',
 ];
-// Maximum number of buckets to cache (bucket metadata)
-export const maxCachedBuckets = process.env.METADATA_MAX_CACHED_BUCKETS ?
-    Number(process.env.METADATA_MAX_CACHED_BUCKETS) : 1000;
-
-export const validRestoreObjectTiers = new Set(['Expedited', 'Standard', 'Bulk']);
-export const maxBatchingConcurrentOperations = 5;
-
-/** For policy resource arn check we allow empty account ID to not break compatibility */
-export const policyArnAllowedEmptyAccountId = ['utapi', 'scuba'];

lib/db.ts

@@ -1,3 +1,7 @@
+import { LevelDB } from 'level';
+
+const writeOptions = { sync: true };
+
 /**
  * Like Error, but with a property set to true.
  * TODO: this is copied from kineticlib, should consolidate with the
@@ -10,15 +14,13 @@
  * use:
  *     throw propError("badTypeInput", "input is not a buffer");
  *
- * @param propName - the property name.
+ * @param {String} propName - the property name.
- * @param message - the Error message.
+ * @param {String} message - the Error message.
- * @returns the Error object.
+ * @returns {Error} the Error object.
  */
 function propError(propName: string, message: string): Error {
     const err = new Error(message);
     err[propName] = true;
-    // @ts-ignore
-    err.is = { [propName]: true };
     return err;
 }
 
@@ -26,20 +28,15 @@ function propError(propName: string, message: string): Error {
  * Running transaction with multiple updates to be committed atomically
  */
 export class IndexTransaction {
-    operations: { type: 'put' | 'del'; key: string; value?: any }[];
-    db: any;
-    closed: boolean;
-    conditions: { [key: string]: string }[];
-
     /**
      * Builds a new transaction
      *
      * @argument {Leveldb} db an open database to which the updates
      *                     will be applied
      *
-     * @returns a new empty transaction
+     * @returns {IndexTransaction} a new empty transaction
      */
-    constructor(db: any) {
+    constructor(db: LevelDB) {
         this.operations = [];
         this.db = db;
         this.closed = false;
@@ -49,22 +46,22 @@ export class IndexTransaction {
     /**
      * Adds a new operation to participate in this running transaction
      *
-     * @argument op an object with the following attributes:
+     * @argument {object} op an object with the following attributes:
      *                    {
      *                      type: 'put' or 'del',
      *                      key: the object key,
      *                      value: (optional for del) the value to store,
      *                    }
      *
-     * @throws an error described by the following properties
+     * @throws {Error} an error described by the following properties
      *                 - invalidTransactionVerb if op is not put or del
      *                 - pushOnCommittedTransaction if already committed
      *                 - missingKey if the key is missing from the op
      *                 - missingValue if putting without a value
+     *
+     * @returns {undefined}
      */
-    push(op: { type: 'put'; key: string; value: any }): void;
+    push(op) {
-    push(op: { type: 'del'; key: string }): void;
-    push(op: { type: 'put' | 'del'; key: string; value?: any }): void {
         if (this.closed) {
             throw propError(
                 'pushOnCommittedTransaction',
@@ -100,42 +97,48 @@ export class IndexTransaction {
      *                 - pushOnCommittedTransaction if already committed
      *                 - missingKey if the key is missing from the op
      *                 - missingValue if putting without a value
+     *
+     * @returns {undefined}
+     *
      * @see push
      */
-    put(key: string, value: any) {
+    put(key, value) {
         this.push({ type: 'put', key, value });
     }
 
     /**
      * Adds a new del operation to this running transaction
      *
-     * @argument key - the key of the object to delete
+     * @argument {string} key - the key of the object to delete
      *
-     * @throws an error described by the following properties
+     * @throws {Error} an error described by the following properties
      *                 - pushOnCommittedTransaction if already committed
      *                 - missingKey if the key is missing from the op
      *
+     * @returns {undefined}
+     *
      * @see push
      */
-    del(key: string) {
+    del(key) {
         this.push({ type: 'del', key });
     }
 
     /**
      * Adds a condition for the transaction
      *
-     * @argument condition an object with the following attributes:
+     * @argument {object} condition an object with the following attributes:
      *                    {
      *                      <condition>: the object key
      *                    }
      *                    example: { notExists: 'key1' }
      *
-     * @throws an error described by the following properties
+     * @throws {Error} an error described by the following properties
      *                 - pushOnCommittedTransaction if already committed
      *                 - missingCondition if the condition is empty
      *
+     * @returns {undefined}
      */
-    addCondition(condition: { [key: string]: string }) {
+    addCondition(condition) {
         if (this.closed) {
             throw propError(
                 'pushOnCommittedTransaction',
@@ -148,7 +151,7 @@ export class IndexTransaction {
                 'missing condition for conditional put'
             );
         }
-        if (typeof condition.notExists !== 'string' && typeof condition.exists !== 'string') {
+        if (typeof condition.notExists !== 'string') {
             throw propError(
                 'unsupportedConditionalOperation',
                 'missing key or supported condition'
@@ -160,11 +163,12 @@ export class IndexTransaction {
     /**
      * Applies the queued updates in this transaction atomically.
      *
-     * @argument cb function to be called when the commit
+     * @argument {function} cb function to be called when the commit
      *              finishes, taking an optional error argument
      *
+     * @returns {undefined}
      */
-    commit(cb: (error: Error | null, data?: any) => void) {
+    commit(cb) {
         if (this.closed) {
             return cb(
                 propError(
@@ -184,11 +188,11 @@ export class IndexTransaction {
         }
 
         this.closed = true;
-        const options = { sync: true, conditions: this.conditions };
+        writeOptions.conditions = this.conditions;
 
         // The array-of-operations variant of the `batch` method
         // allows passing options such has `sync: true` whereas the
         // chained form does not.
-        return this.db.batch(this.operations, options, cb);
+        return this.db.batch(this.operations, writeOptions, cb);
     }
 }

lib/errorUtils.ts

@@ -1,11 +1,9 @@
-export interface ErrorLike {
+export function reshapeExceptionError(error) {
-    message: any;
-    code: any;
-    stack: any;
-    name: any;
-}
-
-export function reshapeExceptionError(error: ErrorLike) {
     const { message, code, stack, name } = error;
-    return { message, code, stack, name };
+    return {
+        message,
+        code,
+        stack,
+        name,
+    };
 }

lib/errors/arsenal-errors.ts

@@ -13,7 +13,6 @@ export const AccessForbidden: ErrorFormat = {
     code: 403,
     description: 'Access Forbidden',
 };
-
 export const AccountProblem: ErrorFormat = {
     code: 403,
     description:
@@ -42,7 +41,7 @@ export const BucketAlreadyOwnedByYou: ErrorFormat = {
     code: 409,
 
     description:
-        'A bucket with this name exists and is already owned by you',
+        'Your previous request to create the named bucket succeeded and you already own it. You get this error in all AWS regions except US Standard, us-east-1. In us-east-1 region, you will get 200 OK, but it is no-op (if bucket exists S3 will not do anything).',
 };
 
 export const BucketNotEmpty: ErrorFormat = {
@@ -365,11 +364,6 @@ export const NoSuchWebsiteConfiguration: ErrorFormat = {
     description: 'The specified bucket does not have a website configuration',
 };
 
-export const NoSuchTagSet: ErrorFormat = {
-    code: 404,
-    description: 'The TagSet does not exist',
-};
-
 export const NoSuchUpload: ErrorFormat = {
     code: 404,
     description:
@@ -690,11 +684,6 @@ export const ReportNotPresent: ErrorFormat = {
         'The request was rejected because the credential report does not exist. To generate a credential report, use GenerateCredentialReport.',
 };
 
-export const Found: ErrorFormat = {
-    code: 302,
-    description: 'Resource Found'
-};
-
 // ------------- Special non-AWS S3 errors -------------
 
 export const MPUinProgress: ErrorFormat = {
@@ -1042,15 +1031,3 @@ export const AuthMethodNotImplemented: ErrorFormat = {
     description: 'AuthMethodNotImplemented',
     code: 501,
 };
-
-// --------------------- quotaErros ---------------------
-
-export const NoSuchQuota: ErrorFormat = {
-    code: 404,
-    description: 'The specified resource does not have a quota.',
-};
-
-export const QuotaExceeded: ErrorFormat = {
-    code: 429,
-    description: 'The quota set for the resource is exceeded.',
-};

lib/errors/index.ts

@@ -1,39 +1,22 @@
-import type { ServerResponse } from 'http';
+import * as http from 'http';
-import * as rawErrors from './arsenalErrors';
+import * as rawErrors from './arsenal-errors';
+import * as types from './types';
 
-/** All possible errors names. */
+export * from './types';
-export type Name = keyof typeof rawErrors;
-/** Object containing all errors names. It has the format { [Name]: "Name" } */
-export type Names = { [Name_ in Name]: Name_ };
-/** Mapping used to determine an error type. It has the format { [Name]: boolean } */
-export type Is = { [_ in Name]: boolean };
-/** Mapping of all possible Errors. It has the format { [Name]: Error } */
-export type Errors = { [_ in Name]: ArsenalError };
 
-// This object is reused constantly through createIs, we store it there
+/** Mapping used to determine an error type. */
-// to avoid recomputation.
+export type Is = { [Name in types.Name]: boolean };
-const isBase = Object.fromEntries(
+/** Mapping of all possible Errors */
-    Object.keys(rawErrors).map((key) => [key, false])
+export type Errors = { [Property in keyof types.Names]: ArsenalError };
-) as Is;
 
-// This allows to conditionally add the old behavior of errors to properly
+const entries = Object.entries(rawErrors);
-// test migration.
-// Activate CI tests with `ALLOW_UNSAFE_ERROR_COMPARISON=false yarn test`.
-// Remove this mechanism in ARSN-176.
-export const allowUnsafeErrComp = (
-    process.env.ALLOW_UNSAFE_ERROR_COMPARISON ?? 'true') === 'true'
 
 // This contains some metaprog. Be careful.
 // Proxy can be found on MDN.
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy
-// While this could seems better to avoid metaprog, this allows us to enforce
+const createIs = (type: types.Name) => {
-// type-checking properly while avoiding all errors that could happen at runtime.
+    const get = (_: {}, value: string | symbol) => type === value;
-// Even if some errors are made in JavaScript, like using err.is.NonExistingError,
+    return new Proxy({}, { get }) as Is;
-// the Proxy will return false.
-const createIs = (type: Name): Is => {
-    const get = (is: Is, value: string | symbol) => is[value] ?? false;
-    const final = Object.freeze({ ...isBase, [type]: true });
-    return new Proxy(final, { get });
 };
 
 export class ArsenalError extends Error {
@@ -41,32 +24,18 @@ export class ArsenalError extends Error {
     #code: number;
     /** Text description of the error. */
     #description: string;
-    /** Type of the error. */
+    /** Type of the error. Belongs to errors.types. */
-    #type: Name;
+    #type: types.Name;
     /** Object used to determine the error type.
      * Example: error.is.InternalError */
     #is: Is;
-    /** A map of error metadata (can be extra fields
-     * that only show in debug mode) */
-    #metadata: Map<string, Object[]>;
 
-    private constructor(type: Name, code: number, description: string,
+    private constructor(type: types.Name, code: number, description: string) {
-        metadata?: Map<string, Object[]>) {
         super(type);
         this.#code = code;
         this.#description = description;
         this.#type = type;
         this.#is = createIs(type);
-        this.#metadata = metadata ?? new Map<string, Object[]>();
-
-        // This restores the old behavior of errors, to make sure they're now
-        // backward-compatible. Fortunately it's handled by TS, but it cannot
-        // be type-checked. This means we have to be extremely careful about
-        // what we're doing when using errors.
-        // Disables the feature when in CI tests but not in production.
-        if (allowUnsafeErrComp) {
-            this[type] = true;
-        }
     }
 
     /** Output the error as a JSON string */
@@ -76,32 +45,8 @@ export class ArsenalError extends Error {
         return JSON.stringify({ errorType, errorMessage });
     }
 
-    flatten() {
-        return {
-            is_arsenal_error: true,
-            code: this.#code,
-            description: this.#description,
-            type: this.#type,
-            stack: this.stack
-        }
-    }
-
-    static unflatten(flat_obj) {
-        if (!flat_obj.is_arsenal_error) {
-            return null;
-        }
-
-        const err = new ArsenalError(
-            flat_obj.type,
-            flat_obj.code,
-            flat_obj.description
-        )
-        err.stack = flat_obj.stack
-        return err;
-    }
-
     /** Write the error in an HTTP response */
-    writeResponse(res: ServerResponse) {
+    writeResponse(res: http.ServerResponse) {
         res.writeHead(this.#code);
         const asStr = this.toString();
         res.end(asStr);
@@ -111,65 +56,39 @@ export class ArsenalError extends Error {
     customizeDescription(description: string): ArsenalError {
         const type = this.#type;
         const code = this.#code;
-        const metadata = new Map(this.#metadata);
+        return new ArsenalError(type, code, description);
-        const err = new ArsenalError(type, code, description, metadata);
-        err.stack = this.stack;
-        return err;
     }
 
-    /** Clone the error with a new metadata field */
-    addMetadataEntry(key: string, value: Object[]): ArsenalError {
-        const type = this.#type;
-        const code = this.#code;
-        const description = this.#description;
-        const metadata = new Map(this.#metadata);
-        metadata.set(key, value);
-        const err = new ArsenalError(type, code, description, metadata);
-        err.stack = this.stack;
-        return err;
-    }
-
-    /** Used to determine the error type. Example: error.is.InternalError */
     get is() {
         return this.#is;
     }
 
-    /** HTTP status code. Example: 401, 403, 500, ... */
     get code() {
         return this.#code;
     }
 
-    /** Text description of the error. */
     get description() {
         return this.#description;
     }
 
-    /**
-     * Type of the error, belonging to Name. is should be prefered instead of
-     * type in a daily-basis, but type remains accessible for future use. */
     get type() {
         return this.#type;
     }
 
-    /** A map of error metadata */
-    get metadata() {
-        return this.#metadata;
-    }
-
     /** Generate all possible errors. An instance is created by default. */
     static errors() {
-        const errors = {};
+        return entries.reduce((acc, value) => {
-        Object.entries(rawErrors).forEach((value) => {
+            const name = value[0] as types.Name;
-            const name = value[0] as Name;
             const error = value[1];
             const { code, description } = error;
-            const get = () => new ArsenalError(name, code, description);
+            const err = new ArsenalError(name, code, description);
-            Object.defineProperty(errors, name, { get });
+            return { ...acc, [name]: err };
-        });
+        }, {} as Errors);
-        return errors as Errors;
     }
 }
 
 /** Mapping of all possible Errors.
  * Use them with errors[error].customizeDescription for any customization. */
-export default ArsenalError.errors();
+const errors = ArsenalError.errors();
+
+export default errors;

lib/errors/types.ts

@@ -0,0 +1,11 @@
+import * as rawErrors from './arsenal-errors';
+
+const entries = Object.keys(rawErrors).map((v) => [v, v]);
+
+/** All possible errors. */
+export type Name = keyof typeof rawErrors
+/** Object containing all errors. It has the format [Name]: "Name" */
+export type Names = { [Name_ in Name]: Name_ };
+
+/** Use types with error.is(types.InternalError) to have nice autocomplete */
+export const types: Names = Object.fromEntries(entries);

lib/ipCheck.ts

@@ -3,37 +3,41 @@ import ipaddr from 'ipaddr.js';
 /**
  * checkIPinRangeOrMatch checks whether a given ip address is in an ip address
  * range or matches the given ip address
- * @param cidr - ip address range or ip address
+ * @param {string} cidr - ip address range or ip address
- * @param ip - parsed ip address
+ * @param {object} ip - parsed ip address
- * @return true if in range, false if not
+ * @return {boolean} true if in range, false if not
  */
-export function checkIPinRangeOrMatch(
+export function checkIPinRangeOrMatch(cidr, ip) {
-    cidr: string,
-    ip: ipaddr.IPv4 | ipaddr.IPv6,
-): boolean {
     // If there is an exact match of the ip address, no need to check ranges
     if (ip.toString() === cidr) {
         return true;
     }
+    let range;
+
     try {
-        if (ip instanceof ipaddr.IPv6) {
+        range = ipaddr.IPv4.parseCIDR(cidr);
-            const range = ipaddr.IPv6.parseCIDR(cidr);
+    } catch (err) {
-            return ip.match(range);
+        try {
-        } else {
+        // not ipv4 so try ipv6
-            const range = ipaddr.IPv4.parseCIDR(cidr);
+            range = ipaddr.IPv6.parseCIDR(cidr);
-            return ip.match(range);
+        } catch (err) {
+            // range is not valid ipv4 or ipv6
+            return false;
         }
-    } catch (error) {
+    }
+    try {
+        return ip.match(range);
+    } catch (err) {
         return false;
     }
 }
 
 /**
- * Parse IP address into object representation
+* Parse IP address into object representation
- * @param ip - IPV4/IPV6/IPV4-mapped IPV6 address
+* @param {string} ip - IPV4/IPV6/IPV4-mapped IPV6 address
- * @return parsedIp - Object representation of parsed IP
+* @return {object} parsedIp - Object representation of parsed IP
- */
+*/
-export function parseIp(ip: string): ipaddr.IPv4 | ipaddr.IPv6 | {} {
+export function parseIp(ip) {
     if (ipaddr.IPv4.isValid(ip)) {
         return ipaddr.parse(ip);
     }
@@ -41,19 +45,23 @@ export function parseIp(ip: string): ipaddr.IPv4 | ipaddr.IPv6 | {} {
         // also parses IPv6 mapped IPv4 addresses into IPv4 representation
         return ipaddr.process(ip);
     }
+    // not valid ip address according to module, so return empty object
+    // which will obviously not match a range of ip addresses that the parsedIp
+    // is being tested against
     return {};
 }
 
+
 /**
- * Checks if an IP adress matches a given list of CIDR ranges
+* Checks if an IP adress matches a given list of CIDR ranges
- * @param cidrList - List of CIDR ranges
+* @param {string[]} cidrList - List of CIDR ranges
- * @param ip - IP address
+* @param {string} ip - IP address
- * @return - true if there is match or false for no match
+* @return {boolean} - true if there is match or false for no match
- */
+*/
-export function ipMatchCidrList(cidrList: string[], ip: string): boolean {
+export function ipMatchCidrList(cidrList, ip) {
     const parsedIp = parseIp(ip);
-    return cidrList.some((item) => {
+    return cidrList.some(item => {
-        let cidr: string | undefined;
+        let cidr;
         // patch the cidr if range is not specified
         if (item.indexOf('/') === -1) {
             if (item.startsWith('127.')) {
@@ -62,10 +70,6 @@ export function ipMatchCidrList(cidrList: string[], ip: string): boolean {
                 cidr = `${item}/32`;
             }
         }
-        return (
+        return checkIPinRangeOrMatch(cidr || item, parsedIp);
-            (parsedIp instanceof ipaddr.IPv4 ||
-                parsedIp instanceof ipaddr.IPv6) &&
-            checkIPinRangeOrMatch(cidr || item, parsedIp)
-        );
     });
 }

lib/jsutil.ts

@@ -1,5 +1,5 @@
-import * as util from 'util';
+import { debuglog } from 'util';
-const debug = util.debuglog('jsutil');
+const debug = debuglog('jsutil');
 
 // JavaScript utility functions
 
@@ -11,23 +11,21 @@ const debug = util.debuglog('jsutil');
  * @note underscore.js provides this functionality but not worth
  * adding a new dependency for such a small use case.
  *
- * @param func function to call at most once
+ * @param {function} func function to call at most once
 
- * @return a callable wrapper mirroring <tt>func</tt> but
+ * @return {function} a callable wrapper mirroring <tt>func</tt> but
  * only calls <tt>func</tt> at first invocation.
  */
-export function once<T>(func: (...args: any[]) => T): (...args: any[]) => T {
+export function once(func) {
-    type State = { called: boolean; res: any };
+    const state = { called: false, res: undefined };
-    const state: State = { called: false, res: undefined };
+    return function wrapper(...args) {
-    return function wrapper(...args: any[]) {
         if (!state.called) {
             state.called = true;
             state.res = func.apply(func, args);
         } else {
-            const m1 = 'function already called:';
+            debug('function already called:', func,
-            const m2 = 'returning cached result:';
+                'returning cached result:', state.res);
-            debug(m1, func, m2, state.res);
         }
         return state.res;
     };
-}
+};

lib/metrics/RedisClient.ts

@@ -1,15 +1,19 @@
 import Redis from 'ioredis';
-import { Logger } from 'werelogs';
-
-export type Config = { host: string; port: number; password: string };
-export type Callback = (error: Error | null, value?: any) => void;
 
 export default class RedisClient {
-    _client: Redis.Redis;
+    _client: Redis
 
-    constructor(config: Config, logger: Logger) {
+    /**
+     * @constructor
+     * @param {Object} config - config
+     * @param {string} config.host - Redis host
+     * @param {number} config.port - Redis port
+     * @param {string} config.password - Redis password
+     * @param {werelogs.Logger} logger - logger instance
+     */
+    constructor(config, logger) {
         this._client = new Redis(config);
-        this._client.on('error', err =>
+        this._client.on('error', (err) =>
             logger.trace('error from redis', {
                 error: err,
                 method: 'RedisClient.constructor',
@@ -22,16 +26,17 @@ export default class RedisClient {
 
     /**
      * scan a pattern and return matching keys
-    * @param pattern - string pattern to match with all existing keys
+     * @param {string} pattern - string pattern to match with all existing keys
-    * @param [count=10] - scan count
+     * @param {number} [count=10] - scan count
-    * @param cb - callback (error, result)
+     * @param {callback} cb - callback (error, result)
+     * @return {undefined}
      */
-    scan(pattern: string, count = 10, cb: Callback) {
+    scan(pattern: string, count = 10, cb) {
         const params = { match: pattern, count };
-        const keys: any[] = [];
+        const keys = [];
 
         const stream = this._client.scanStream(params);
-        stream.on('data', resultKeys => {
+        stream.on('data', (resultKeys) => {
             for (let i = 0; i < resultKeys.length; i++) {
                 keys.push(resultKeys[i]);
             }
@@ -41,91 +46,103 @@ export default class RedisClient {
         });
     }
 
-    /** increment value of a key by 1 and set a ttl
+    /**
-     * @param key - key holding the value
+     * increment value of a key by 1 and set a ttl
-     * @param expiry - expiry in seconds
+     * @param {string} key - key holding the value
-     * @param cb - callback
+     * @param {number} expiry - expiry in seconds
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    incrEx(key: string, expiry: number, cb: Callback) {
+    incrEx(key: string, expiry: number, cb) {
-        const exp = expiry.toString();
         return this._client
-            .multi([['incr', key], ['expire', key, exp]])
+            .multi([
+                ['incr', key],
+                ['expire', key, expiry],
+            ])
             .exec(cb);
     }
 
     /**
      * increment value of a key by a given amount
-     * @param key - key holding the value
+     * @param {string} key - key holding the value
-     * @param amount - amount to increase by
+     * @param {number} amount - amount to increase by
-     * @param cb - callback
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    incrby(key: string, amount: number, cb: Callback) {
+    incrby(key: string, amount: number, cb) {
         return this._client.incrby(key, amount, cb);
     }
 
-    /** increment value of a key by a given amount and set a ttl
+    /**
-     * @param key - key holding the value
+     * increment value of a key by a given amount and set a ttl
-     * @param amount - amount to increase by
+     * @param {string} key - key holding the value
-     * @param expiry - expiry in seconds
+     * @param {number} amount - amount to increase by
-     * @param cb - callback
+     * @param {number} expiry - expiry in seconds
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    incrbyEx(key: string, amount: number, expiry: number, cb: Callback) {
+    incrbyEx(key: string, amount: number, expiry: number, cb) {
-        const am = amount.toString();
-        const exp = expiry.toString();
         return this._client
-            .multi([['incrby', key, am], ['expire', key, exp]])
+            .multi([
+                ['incrby', key, amount],
+                ['expire', key, expiry],
+            ])
             .exec(cb);
     }
 
     /**
      * decrement value of a key by a given amount
-     * @param key - key holding the value
+     * @param {string} key - key holding the value
-     * @param amount - amount to increase by
+     * @param {number} amount - amount to increase by
-     * @param cb - callback
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    decrby(key: string, amount: number, cb: Callback) {
+    decrby(key: string, amount: number, cb) {
         return this._client.decrby(key, amount, cb);
     }
 
     /**
-    * execute a batch of commands
+     * get value stored at key
-    * @param cmds - list of commands
+     * @param {string} key - key holding the value
-    * @param cb - callback
+     * @param {callback} cb - callback
-    * @return
+     * @return {undefined}
      */
-    batch(cmds: string[][], cb: Callback) {
+    get(key: string, cb) {
-        return this._client.pipeline(cmds).exec(cb);
+        return this._client.get(key, cb);
     }
 
     /**
      * Checks if a key exists
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param cb - callback
+     * @param {function} cb - callback
      *   If cb response returns 0, key does not exist.
      *   If cb response returns 1, key exists.
+     * @return {undefined}
      */
-    exists(key: string, cb: Callback) {
+    exists(key: string, cb) {
         return this._client.exists(key, cb);
     }
 
     /**
-     * get value stored at key
+     * execute a batch of commands
-     * @param key - key holding the value
+     * @param {string[]} cmds - list of commands
-     * @param cb - callback
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    get(key: string, cb: Callback) {
+    batch(cmds: string[], cb) {
-        return this._client.get(key, cb);
+        return this._client.pipeline(cmds).exec(cb);
     }
 
     /**
      * Add a value and its score to a sorted set. If no sorted set exists, this
      * will create a new one for the given key.
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param score - score used to order set
+     * @param {integer} score - score used to order set
-     * @param value - value to store
+     * @param {string} value - value to store
-     * @param cb - callback
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    zadd(key: string, score: number, value: string, cb: Callback) {
+    zadd(key: string, score: number, value: string, cb) {
         return this._client.zadd(key, score, value, cb);
     }
 
@@ -134,10 +151,11 @@ export default class RedisClient {
      * Note: using this on a key that does not exist will return 0.
      * Note: using this on an existing key that isn't a sorted set will
      * return an error WRONGTYPE.
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param cb - callback
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-    zcard(key: string, cb: Callback) {
+    zcard(key: string, cb) {
         return this._client.zcard(key, cb);
     }
 
@@ -146,73 +164,73 @@ export default class RedisClient {
      * Note: using this on a key that does not exist will return nil.
      * Note: using this on a value that does not exist in a valid sorted set key
      *       will return nil.
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param value - value within sorted set
+     * @param {string} value - value within sorted set
-     * @param cb - callback
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-     zscore(key: string, value: string, cb: Callback) {
+    zscore(key: string, value: string, cb) {
         return this._client.zscore(key, value, cb);
     }
 
     /**
      * Remove a value from a sorted set
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param value - value within sorted set. Can specify
+     * @param {string|array} value - value within sorted set. Can specify
      *   multiple values within an array
-     * @param cb - callback
+     * @param {function} cb - callback
      *   The cb response returns number of values removed
+     * @return {undefined}
      */
-    zrem(key: string, value: string | string[], cb: Callback) {
+    zrem(key: string, value: string | any[], cb) {
         return this._client.zrem(key, value, cb);
     }
 
     /**
      * Get specified range of elements in a sorted set
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param start - start index (inclusive)
+     * @param {integer} start - start index (inclusive)
-     * @param end - end index (inclusive) (can use -1)
+     * @param {integer} end - end index (inclusive) (can use -1)
-     * @param cb - callback
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-    zrange(key: string, start: number, end: number, cb: Callback) {
+    zrange(key: string, start: number, end: number, cb) {
         return this._client.zrange(key, start, end, cb);
     }
 
     /**
      * Get range of elements in a sorted set based off score
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param min - min score value (inclusive)
+     * @param {integer|string} min - min score value (inclusive)
      *   (can use "-inf")
-     * @param max - max score value (inclusive)
+     * @param {integer|string} max - max score value (inclusive)
      *   (can use "+inf")
-     * @param cb - callback
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-    zrangebyscore(
+    zrangebyscore(key: string, min: number | string, max: number | string, cb) {
-        key: string,
-        min: number | string,
-        max: number | string,
-        cb: Callback,
-    ) {
         return this._client.zrangebyscore(key, min, max, cb);
     }
 
     /**
      * get TTL or expiration in seconds
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param cb - callback
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-    ttl(key: string, cb: Callback) {
+    ttl(key: string, cb) {
         return this._client.ttl(key, cb);
     }
 
-    clear(cb: Callback) {
+    clear(cb) {
         return this._client.flushdb(cb);
     }
 
-    disconnect() {
+    disconnect(cb) {
-        this._client.disconnect();
+        return this._client.quit(cb);
     }
 
-    listClients(cb: Callback) {
+    listClients(cb) {
         return this._client.client('list', cb);
     }
 }

lib/metrics/StatsClient.ts

@@ -1,19 +1,16 @@
 import async from 'async';
 import RedisClient from './RedisClient';
-import { Logger } from 'werelogs';
-
-export type Callback = (error: Error | null, value?: any) => void;
 
 export default class StatsClient {
-    _redis: RedisClient;
+    _redis?: RedisClient;
     _interval: number;
     _expiry: number;
 
     /**
     * @constructor
-    * @param redisClient - RedisClient instance
+    * @param {object} redisClient - RedisClient instance
-    * @param interval - sampling interval by seconds
+    * @param {number} interval - sampling interval by seconds
-    * @param expiry - sampling duration by seconds
+    * @param {number} expiry - sampling duration by seconds
     */
     constructor(redisClient: RedisClient, interval: number, expiry: number) {
         this._redis = redisClient;
@@ -22,23 +19,25 @@ export default class StatsClient {
         return this;
     }
 
-    /** Utility function to use when callback is undefined */
+    /*
+    * Utility function to use when callback is undefined
+    */
     _noop() {}
 
     /**
     * normalize to the nearest interval
-    * @param d - Date instance
+    * @param {object} d - Date instance
-    * @return timestamp - normalized to the nearest interval
+    * @return {number} timestamp - normalized to the nearest interval
     */
     _normalizeTimestamp(d: Date): number {
         const s = d.getSeconds();
-        return d.setSeconds(s - s % this._interval, 0);
+        return d.setSeconds(s - (s % this._interval), 0);
     }
 
     /**
     * set timestamp to the previous interval
-    * @param d - Date instance
+    * @param {object} d - Date instance
-    * @return timestamp - set to the previous interval
+    * @return {number} timestamp - set to the previous interval
     */
     _setPrevInterval(d: Date): number {
         return d.setSeconds(d.getSeconds() - this._interval);
@@ -46,23 +45,23 @@ export default class StatsClient {
 
     /**
     * build redis key to get total number of occurrences on the server
-    * @param name - key name identifier
+    * @param {string} name - key name identifier
-    * @param d - Date instance
+    * @param {Date} date - Date instance
-    * @return key - key for redis
+    * @return {string} key - key for redis
     */
-    buildKey(name: string, d: Date): string {
+    buildKey(name: string, date: Date): string {
-        return `${name}:${this._normalizeTimestamp(d)}`;
+        return `${name}:${this._normalizeTimestamp(date)}`;
     }
 
     /**
     * reduce the array of values to a single value
     * typical input looks like [[null, '1'], [null, '2'], [null, null]...]
-    * @param arr - Date instance
+    * @param {array} arr - Date instance
-    * @return key - key for redis
+    * @return {string} key - key for redis
     */
-    _getCount(arr: [any, string | null][]): number {
+    _getCount(arr: any[]): string {
         return arr.reduce((prev, a) => {
-            let num = parseInt(a[1] ?? '', 10);
+            let num = parseInt(a[1], 10);
             num = Number.isNaN(num) ? 0 : num;
             return prev + num;
         }, 0);
@@ -70,27 +69,25 @@ export default class StatsClient {
 
     /**
     * report/record a new request received on the server
-    * @param id - service identifier
+    * @param {string} id - service identifier
-    * @param incr - optional param increment
+    * @param {number} incr - optional param increment
+    * @param {function} cb - callback
+    * @return {undefined}
     */
-    reportNewRequest(
+    reportNewRequest(id: string, incr: number, cb) {
-        id: string,
-        incr?: number | ((error: Error | null, value?: any) => void),
-        cb?: (error: Error | null, value?: any) => void,
-    ) {
         if (!this._redis) {
             return undefined;
         }
 
-        let callback: (error: Error | null, value?: any) => void;
+        let callback;
-        let amount: number;
+        let amount;
         if (typeof incr === 'function') {
             // In case where optional `incr` is not passed, but `cb` is passed
             callback = incr;
             amount = 1;
         } else {
-            callback = (cb && typeof cb === 'function') ? cb : this._noop;
+            callback = cb && typeof cb === 'function' ? cb : this._noop;
-            amount = (typeof incr === 'number') ? incr : 1;
+            amount = typeof incr === 'number' ? incr : 1;
         }
 
         const key = this.buildKey(`${id}:requests`, new Date());
@@ -100,31 +97,35 @@ export default class StatsClient {
 
     /**
      * Increment the given key by the given value.
-     * @param key - The Redis key to increment
+     * @param {String} key - The Redis key to increment
-     * @param incr - The value to increment by
+     * @param {Number} incr - The value to increment by
-     * @param [cb] - callback
+     * @param {function} [cb] - callback
+     * @return {undefined}
      */
-    incrementKey(key: string, incr: number, cb: Callback) {
+    incrementKey(key: string, incr: number, cb) {
         const callback = cb || this._noop;
         return this._redis.incrby(key, incr, callback);
     }
 
     /**
      * Decrement the given key by the given value.
-     * @param key - The Redis key to decrement
+     * @param {String} key - The Redis key to decrement
-     * @param decr - The value to decrement by
+     * @param {Number} decr - The value to decrement by
-     * @param [cb] - callback
+     * @param {function} [cb] - callback
+     * @return {undefined}
      */
-    decrementKey(key: string, decr: number, cb: Callback) {
+    decrementKey(key: string, decr: number, cb) {
         const callback = cb || this._noop;
         return this._redis.decrby(key, decr, callback);
     }
 
     /**
      * report/record a request that ended up being a 500 on the server
-    * @param id - service identifier
+     * @param {string} id - service identifier
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    report500(id: string, cb?: (error: Error | null, value?: any) => void) {
+    report500(id: string, cb) {
         if (!this._redis) {
             return undefined;
         }
@@ -135,25 +136,29 @@ export default class StatsClient {
 
     /**
     * wrapper on `getStats` that handles a list of keys
-    * @param log - Werelogs request logger
+    * @param {object} log - Werelogs request logger
-    * @param ids - service identifiers
+    * @param {array} ids - service identifiers
-    * @param cb - callback to call with the err/result
+    * @param {callback} cb - callback to call with the err/result
+    * @return {undefined}
     */
-    getAllStats(log: Logger, ids: string[], cb: Callback) {
+    getAllStats(log, ids: any[], cb) {
         if (!this._redis) {
             return cb(null, {});
         }
 
         const statsRes = {
-            'requests': 0,
+            requests: 0,
             '500s': 0,
-            'sampleDuration': this._expiry,
+            sampleDuration: this._expiry,
         };
         let requests = 0;
         let errors = 0;
 
         // for now set concurrency to default of 10
-        return async.eachLimit(ids, 10, (id: string, done) => {
+        return async.eachLimit(
+            ids,
+            10,
+            (id, done) => {
                 this.getStats(log, id, (err, res) => {
                     if (err) {
                         return done(err);
@@ -162,7 +167,8 @@ export default class StatsClient {
                     errors += res['500s'];
                     return done();
                 });
-        }, error => {
+            },
+            (error) => {
                 if (error) {
                     log.error('error getting stats', {
                         error,
@@ -173,22 +179,25 @@ export default class StatsClient {
                 statsRes.requests = requests;
                 statsRes['500s'] = errors;
                 return cb(null, statsRes);
-        });
+            }
+        );
     }
 
     /**
     * get stats for the last x seconds, x being the sampling duration
-    * @param log - Werelogs request logger
+    * @param {object} log - Werelogs request logger
-    * @param id - service identifier
+    * @param {string} id - service identifier
+    * @param {callback} cb - callback to call with the err/result
+    * @return {undefined}
     */
-    getStats(log: Logger, id: string, cb: (error: Error | null, value?: any) => void) {
+    getStats(log, id: string, cb) {
         if (!this._redis) {
             return cb(null, {});
         }
         const d = new Date();
         const totalKeys = Math.floor(this._expiry / this._interval);
-        const reqsKeys: ['get', string][] = [];
+        const reqsKeys = [];
-        const req500sKeys: ['get', string][] = [];
+        const req500sKeys = [];
         for (let i = 0; i < totalKeys; i++) {
             reqsKeys.push(['get', this.buildKey(`${id}:requests`, d)]);
             req500sKeys.push(['get', this.buildKey(`${id}:500s`, d)]);
@@ -206,9 +215,9 @@ export default class StatsClient {
             * index 1 contains the result
             */
             const statsRes = {
-                'requests': 0,
+                requests: 0,
                 '500s': 0,
-                'sampleDuration': this._expiry,
+                sampleDuration: this._expiry,
             };
             if (err) {
                 log.error('error getting stats', {
@@ -222,8 +231,8 @@ export default class StatsClient {
                  */
                 return cb(null, statsRes);
             }
-            statsRes.requests = this._getCount((results as any)[0]);
+            statsRes.requests = this._getCount(results[0]);
-            statsRes['500s'] = this._getCount((results as any)[1]);
+            statsRes['500s'] = this._getCount(results[1]);
             return cb(null, statsRes);
         });
     }

lib/metrics/StatsModel.ts

@@ -1,8 +1,5 @@
-import StatsClient from './StatsClient';
-import { Logger } from 'werelogs';
 import async from 'async';
-
+import StatsClient from './StatsClient';
-export type Callback = (error: Error | null, value?: any) => void;
 
 /**
  * @class StatsModel
@@ -14,44 +11,43 @@ export default class StatsModel extends StatsClient {
     /**
      * Utility method to convert 2d array rows to columns, and vice versa
      * See also: https://docs.ruby-lang.org/en/2.0.0/Array.html#method-i-zip
-    * @param arrays - 2d array of integers
+     * @param {array} arrays - 2d array of integers
-    * @return converted array
+     * @return {array} converted array
      */
     _zip(arrays: number[][]) {
-        if (arrays.length > 0 && arrays.every(a => Array.isArray(a))) {
+        if (arrays.length > 0 && arrays.every((a) => Array.isArray(a))) {
-            return arrays[0].map((_, i) => arrays.map(a => a[i]));
+            return arrays[0].map((_, i) => arrays.map((a) => a[i]));
         }
         return [];
     }
 
     /**
      * normalize to the nearest interval
-    * @param d - Date instance
+     * @param {object} d - Date instance
-    * @return timestamp - normalized to the nearest interval
+     * @return {number} timestamp - normalized to the nearest interval
      */
     _normalizeTimestamp(d: Date) {
         const m = d.getMinutes();
-        return d.setMinutes(m - m % (Math.floor(this._interval / 60)), 0, 0);
+        return d.setMinutes(m - (m % Math.floor(this._interval / 60)), 0, 0);
     }
 
     /**
      * override the method to get the count as an array of integers separated
      * by each interval
      * typical input looks like [[null, '1'], [null, '2'], [null, null]...]
-    * @param arr - each index contains the result of each batch command
+     * @param {array} arr - each index contains the result of each batch command
      *   where index 0 signifies the error and index 1 contains the result
-    * @return array of integers, ordered from most recent interval to
+     * @return {array} array of integers, ordered from most recent interval to
      *   oldest interval with length of (expiry / interval)
      */
-    // @ts-expect-errors
+    _getCount(arr) {
-    _getCount(arr: [any, string | null][]): number[] {
         const size = Math.floor(this._expiry / this._interval);
         const array = arr.reduce((store, i) => {
-            let num = parseInt(i[1] ?? '', 10);
+            let num = parseInt(i[1], 10);
             num = Number.isNaN(num) ? 0 : num;
             store.push(num);
             return store;
-        }, [] as number[]);
+        }, []);
 
         if (array.length < size) {
             array.push(...Array(size - array.length).fill(0));
@@ -62,23 +58,24 @@ export default class StatsModel extends StatsClient {
     /**
      * wrapper on `getStats` that handles a list of keys
      * override the method to reduce the returned 2d array from `_getCount`
-    * @param log - Werelogs request logger
+     * @param {object} log - Werelogs request logger
-    * @param ids - service identifiers
+     * @param {array} ids - service identifiers
-    * @param cb - callback to call with the err/result
+     * @param {callback} cb - callback to call with the err/result
+     * @return {undefined}
      */
-    getAllStats(log: Logger, ids: string[], cb: Callback) {
+    getAllStats(log, ids: string[], cb) {
         if (!this._redis) {
             return cb(null, {});
         }
 
         const size = Math.floor(this._expiry / this._interval);
         const statsRes = {
-            'requests': Array(size).fill(0),
+            requests: Array(size).fill(0),
             '500s': Array(size).fill(0),
-            'sampleDuration': this._expiry,
+            sampleDuration: this._expiry,
         };
-        const requests: any[] = [];
+        const requests = [];
-        const errors: any[] = [];
+        const errors = [];
 
         if (ids.length === 0) {
             return cb(null, statsRes);
@@ -114,13 +111,14 @@ export default class StatsModel extends StatsClient {
 
     /**
      * Handles getting a list of global keys.
-     * @param ids - Service identifiers
+     * @param {array} ids - Service identifiers
-     * @param log - Werelogs request logger
+     * @param {object} log - Werelogs request logger
-     * @param cb - Callback
+     * @param {function} cb - Callback
+     * @return {undefined}
      */
-    getAllGlobalStats(ids: string[], log: Logger, cb: Callback) {
+    getAllGlobalStats(ids: string[], log, cb) {
-        const reqsKeys = ids.map(key => (['get', key]));
+        const reqsKeys = ids.map((key) => ['get', key]);
-        return this._redis.batch(reqsKeys, (err, res) => {
+        return this._redis!.batch(reqsKeys, (err, res) => {
             const statsRes = { requests: 0 };
             if (err) {
                 log.error('error getting metrics', {
@@ -146,8 +144,8 @@ export default class StatsModel extends StatsClient {
 
     /**
      * normalize date timestamp to the nearest hour
-     * @param d - Date instance
+     * @param {Date} d - Date instance
-     * @return timestamp - normalized to the nearest hour
+     * @return {number} timestamp - normalized to the nearest hour
      */
     normalizeTimestampByHour(d: Date) {
         return d.setMinutes(0, 0, 0);
@@ -155,8 +153,8 @@ export default class StatsModel extends StatsClient {
 
     /**
      * get previous hour to date given
-     * @param d - Date instance
+     * @param {Date} d - Date instance
-     * @return timestamp - one hour prior to date passed
+     * @return {number} timestamp - one hour prior to date passed
      */
     _getDatePreviousHour(d: Date) {
         return d.setHours(d.getHours() - 1);
@@ -164,8 +162,8 @@ export default class StatsModel extends StatsClient {
 
     /**
      * get list of sorted set key timestamps
-     * @param epoch - epoch time
+     * @param {number} epoch - epoch time
-     * @return array of sorted set key timestamps
+     * @return {array} array of sorted set key timestamps
      */
     getSortedSetHours(epoch: number) {
         const timestamps: number[] = [];
@@ -179,8 +177,8 @@ export default class StatsModel extends StatsClient {
 
     /**
      * get the normalized hour timestamp for given epoch time
-     * @param epoch - epoch time
+     * @param {number} epoch - epoch time
-     * @return normalized hour timestamp for given time
+     * @return {string} normalized hour timestamp for given time
      */
     getSortedSetCurrentHour(epoch: number) {
         return this.normalizeTimestampByHour(new Date(epoch));
@@ -188,18 +186,14 @@ export default class StatsModel extends StatsClient {
 
     /**
      * helper method to add element to a sorted set, applying TTL if new set
-     * @param key - name of key
+     * @param {string} key - name of key
-     * @param score - score used to order set
+     * @param {integer} score - score used to order set
-     * @param value - value to store
+     * @param {string} value - value to store
-     * @param cb - callback
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    addToSortedSet(
+    addToSortedSet(key: string, score: number, value: string, cb) {
-        key: string,
+        this._redis!.exists(key, (err, resCode) => {
-        score: number,
-        value: string,
-        cb: (error: Error | null, value?: any) => void,
-    ) {
-        this._redis.exists(key, (err, resCode) => {
             if (err) {
                 return cb(err);
             }
@@ -208,17 +202,16 @@ export default class StatsModel extends StatsClient {
                 const msInADay = 24 * 60 * 60 * 1000;
                 const nearestHour = this.normalizeTimestampByHour(new Date());
                 // in seconds
-                const ttl = Math.ceil(
+                const ttl = Math.ceil((msInADay - (Date.now() - nearestHour)) / 1000);
-                    (msInADay - (Date.now() - nearestHour)) / 1000);
                 const cmds = [
-                    ['zadd', key, score.toString(), value],
+                    ['zadd', key, score, value],
-                    ['expire', key, ttl.toString()],
+                    ['expire', key, ttl],
                 ];
                 return this._redis.batch(cmds, (err, res) => {
                     if (err) {
                         return cb(err);
                     }
-                    const cmdErr = res.find((r: any) => r[0] !== null);
+                    const cmdErr = res.find((r) => r[0] !== null);
                     if (cmdErr) {
                         return cb(cmdErr);
                     }
@@ -226,7 +219,7 @@ export default class StatsModel extends StatsClient {
                     return cb(null, successResponse);
                 });
             }
-            return this._redis.zadd(key, score, value, cb);
+            return this._redis!.zadd(key, score, value, cb);
         });
     }
 }

lib/metrics/ZenkoMetrics.ts

@@ -1,35 +1,38 @@
 import promClient from 'prom-client';
 
+const collectDefaultMetricsIntervalMs =
+    process.env.COLLECT_DEFAULT_METRICS_INTERVAL_MS !== undefined
+        ? Number.parseInt(process.env.COLLECT_DEFAULT_METRICS_INTERVAL_MS, 10)
+        : 10000;
+
+promClient.collectDefaultMetrics({ timeout: collectDefaultMetricsIntervalMs });
+
 export default class ZenkoMetrics {
-    static createCounter(params: promClient.CounterConfiguration<string>) {
+    static createCounter(params) {
         return new promClient.Counter(params);
     }
 
-    static createGauge(params: promClient.GaugeConfiguration<string>) {
+    static createGauge(params) {
         return new promClient.Gauge(params);
     }
 
-    static createHistogram(params: promClient.HistogramConfiguration<string>) {
+    static createHistogram(params) {
         return new promClient.Histogram(params);
     }
 
-    static createSummary(params: promClient.SummaryConfiguration<string>) {
+    static createSummary(params) {
         return new promClient.Summary(params);
     }
 
-    static getMetric(name: string) {
+    static getMetric(name) {
         return promClient.register.getSingleMetric(name);
     }
 
-    static async asPrometheus() {
+    static asPrometheus() {
         return promClient.register.metrics();
     }
 
     static asPrometheusContentType() {
         return promClient.register.contentType;
     }
-
-    static collectDefaultMetrics() {
-        return promClient.collectDefaultMetrics();
-    }
 }

lib/models/ARN.ts

@@ -1,4 +1,4 @@
-import errors from '../errors'
+import errors from '../errors';
 
 const validServices = {
     aws: ['s3', 'iam', 'sts', 'ring'],
@@ -9,7 +9,7 @@ export default class ARN {
     _partition: string;
     _service: string;
     _region: string | null;
-    _accountId?: string | null;
+    _accountId: string | null;
     _resource: string;
 
     /**
@@ -17,19 +17,13 @@ export default class ARN {
      * Create an ARN object from its individual components
      *
      * @constructor
-     * @param partition - ARN partition (e.g. 'aws')
+     * @param {string} partition - ARN partition (e.g. 'aws')
-     * @param service - service name in partition (e.g. 's3')
+     * @param {string} service - service name in partition (e.g. 's3')
-     * @param [region] - AWS region
+     * @param {string} [region] - AWS region
-     * @param [accountId] - AWS 12-digit account ID
+     * @param {string} [accountId] - AWS 12-digit account ID
-     * @param resource - AWS resource path (e.g. 'foo/bar')
+     * @param {string} resource - AWS resource path (e.g. 'foo/bar')
      */
-    constructor(
+    constructor(partition: string, service: string, region: string, accountId: string, resource: string) {
-        partition: string,
-        service: string,
-        region: string | undefined | null,
-        accountId: string | undefined | null,
-        resource: string,
-    ) {
         this._partition = partition;
         this._service = service;
         this._region = region || null;
@@ -69,8 +63,8 @@ export default class ARN {
                 `bad ARN: bad account ID "${accountId}": ` +
                     'must be a 12-digit number or "*"') };
         }
-        const fullResource = (resource !== undefined ?
+        const fullResource = resource !== undefined ?
-            `${resourceType}:${resource}` : resourceType);
+            `${resourceType}:${resource}` : resourceType;
         return new ARN(partition, service, region, accountId, fullResource);
     }
 
@@ -91,21 +85,21 @@ export default class ARN {
     }
 
     isIAMAccount() {
-        return this.getService() === 'iam'
+        return this.getService() === 'iam' &&
-            && this.getAccountId() !== null
+            this.getAccountId() !== null &&
-            && this.getAccountId() !== '*'
+            this.getAccountId() !== '*' &&
-            && this.getResource() === 'root';
+            this.getResource() === 'root';
     }
     isIAMUser() {
-        return this.getService() === 'iam'
+        return this.getService() === 'iam' &&
-            && this.getAccountId() !== null
+            this.getAccountId() !== null &&
-            && this.getAccountId() !== '*'
+            this.getAccountId() !== '*' &&
-            && this.getResource().startsWith('user/');
+            this.getResource().startsWith('user/');
     }
     isIAMRole() {
-        return this.getService() === 'iam'
+        return this.getService() === 'iam' &&
-            && this.getAccountId() !== null
+            this.getAccountId() !== null &&
-            && this.getResource().startsWith('role');
+            this.getResource().startsWith('role');
     }
 
     toString() {

lib/models/BackendInfo.ts

@@ -1,36 +1,28 @@
-import { RequestLogger } from 'werelogs';
-
 import { legacyLocations } from '../constants';
 import escapeForXml from '../s3middleware/escapeForXml';
 
-type CloudServerConfig = any;
-
 export default class BackendInfo {
-    _config: CloudServerConfig;
+    _config;
-    _requestEndpoint: string;
+    _objectLocationConstraint;
-    _objectLocationConstraint?: string;
+    _bucketLocationConstraint;
-    _bucketLocationConstraint?: string;
+    _requestEndpoint;
-    _legacyLocationConstraint?: string;
+    _legacyLocationConstraint;
 
     /**
     * Represents the info necessary to evaluate which data backend to use
     * on a data put call.
     * @constructor
-    * @param config - CloudServer config containing list of locations
+    * @param {object} config - CloudServer config containing list of locations
-    * @param objectLocationConstraint - location constraint
+    * @param {string | undefined} objectLocationConstraint - location constraint
     * for object based on user meta header
-    * @param bucketLocationConstraint - location
+    * @param {string | undefined } bucketLocationConstraint - location
     * constraint for bucket based on bucket metadata
-    * @param requestEndpoint - endpoint to which request was made
+    * @param {string} requestEndpoint - endpoint to which request was made
-    * @param legacyLocationConstraint - legacy location constraint
+    * @param {string | undefined } legacyLocationConstraint - legacy location
+    * constraint
     */
-    constructor(
+    constructor(config, objectLocationConstraint, bucketLocationConstraint,
-        config: CloudServerConfig,
+        requestEndpoint, legacyLocationConstraint) {
-        objectLocationConstraint: string | undefined,
-        bucketLocationConstraint: string | undefined,
-        requestEndpoint: string,
-        legacyLocationConstraint: string | undefined,
-    ) {
         this._config = config;
         this._objectLocationConstraint = objectLocationConstraint;
         this._bucketLocationConstraint = bucketLocationConstraint;
@@ -41,18 +33,15 @@ export default class BackendInfo {
 
     /**
      * validate proposed location constraint against config
-     * @param config - CloudServer config
+     * @param {object} config - CloudServer config
-     * @param locationConstraint - value of user
+     * @param {string | undefined} locationConstraint - value of user
      * metadata location constraint header or bucket location constraint
-     * @param log - werelogs logger
+     * @param {object} log - werelogs logger
-     * @return - true if valid, false if not
+     * @return {boolean} - true if valid, false if not
      */
-    static isValidLocationConstraint(
+    static isValidLocationConstraint(config, locationConstraint, log) {
-        config: CloudServerConfig,
+        if (Object.keys(config.locationConstraints).
-        locationConstraint: string | undefined,
+            indexOf(locationConstraint) < 0) {
-        log: RequestLogger,
-    ) {
-        if (!locationConstraint || !(locationConstraint in config.locationConstraints)) {
             log.trace('proposed locationConstraint is invalid',
                 { locationConstraint });
             return false;
@@ -62,17 +51,14 @@ export default class BackendInfo {
 
     /**
      * validate that request endpoint is listed in the restEndpoint config
-     * @param config - CloudServer config
+     * @param {object} config - CloudServer config
-     * @param requestEndpoint - request endpoint
+     * @param {string} requestEndpoint - request endpoint
-     * @param log - werelogs logger
+     * @param {object} log - werelogs logger
-     * @return true if present, false if not
+     * @return {boolean} - true if present, false if not
      */
-    static isRequestEndpointPresent(
+    static isRequestEndpointPresent(config, requestEndpoint, log) {
-        config: CloudServerConfig,
+        if (Object.keys(config.restEndpoints).
-        requestEndpoint: string,
+            indexOf(requestEndpoint) < 0) {
-        log: RequestLogger,
-    ) {
-        if (!(requestEndpoint in config.restEndpoints)) {
             log.trace('requestEndpoint does not match config restEndpoints',
                 { requestEndpoint });
             return false;
@@ -83,18 +69,14 @@ export default class BackendInfo {
     /**
      * validate that locationConstraint for request Endpoint matches
      * one config locationConstraint
-     * @param config - CloudServer config
+     * @param {object} config - CloudServer config
-     * @param requestEndpoint - request endpoint
+     * @param {string} requestEndpoint - request endpoint
-     * @param log - werelogs logger
+     * @param {object} log - werelogs logger
-     * @return - true if matches, false if not
+     * @return {boolean} - true if matches, false if not
      */
-    static isRequestEndpointValueValid(
+    static isRequestEndpointValueValid(config, requestEndpoint, log) {
-        config: CloudServerConfig,
+        if (Object.keys(config.locationConstraints).
-        requestEndpoint: string,
+            indexOf(config.restEndpoints[requestEndpoint]) < 0) {
-        log: RequestLogger,
-    ) {
-        const restEndpoint = config.restEndpoints[requestEndpoint];
-        if (!(restEndpoint in config.locationConstraints)) {
             log.trace('the default locationConstraint for request' +
                 'Endpoint does not match any config locationConstraint',
             { requestEndpoint });
@@ -105,11 +87,11 @@ export default class BackendInfo {
 
     /**
      * validate that s3 server is running with a file or memory backend
-     * @param config - CloudServer config
+     * @param {object} config - CloudServer config
-     * @param log - werelogs logger
+     * @param {object} log - werelogs logger
-     * @return - true if running with file/mem backend, false if not
+     * @return {boolean} - true if running with file/mem backend, false if not
      */
-    static isMemOrFileBackend(config: CloudServerConfig, log: RequestLogger) {
+    static isMemOrFileBackend(config, log) {
         if (config.backends.data === 'mem' || config.backends.data === 'file') {
             log.trace('use data backend for the location', {
                 dataBackend: config.backends.data,
@@ -127,16 +109,12 @@ export default class BackendInfo {
      * data backend for the location.
      * - if locationConstraint for request Endpoint does not match
      * any config locationConstraint, we will return an error
-     * @param config - CloudServer config
+     * @param {object} config - CloudServer config
-     * @param requestEndpoint - request endpoint
+     * @param {string} requestEndpoint - request endpoint
-     * @param log - werelogs logger
+     * @param {object} log - werelogs logger
-     * @return - true if valid, false if not
+     * @return {boolean} - true if valid, false if not
      */
-    static isValidRequestEndpointOrBackend(
+    static isValidRequestEndpointOrBackend(config, requestEndpoint, log) {
-        config: CloudServerConfig,
-        requestEndpoint: string,
-        log: RequestLogger,
-    ) {
         if (!BackendInfo.isRequestEndpointPresent(config, requestEndpoint,
             log)) {
             return BackendInfo.isMemOrFileBackend(config, log);
@@ -147,22 +125,17 @@ export default class BackendInfo {
 
     /**
      * validate controlling BackendInfo Parameter
-     * @param config - CloudServer config
+     * @param {object} config - CloudServer config
-     * @param objectLocationConstraint - value of user
+     * @param {string | undefined} objectLocationConstraint - value of user
      * metadata location constraint header
-     * @param bucketLocationConstraint - location
+     * @param {string | null} bucketLocationConstraint - location
      * constraint from bucket metadata
-     * @param requestEndpoint - endpoint of request
+     * @param {string} requestEndpoint - endpoint of request
-     * @param log - werelogs logger
+     * @param {object} log - werelogs logger
-     * @return - location constraint validity
+     * @return {object} - location constraint validity
      */
-    static controllingBackendParam(
+    static controllingBackendParam(config, objectLocationConstraint,
-        config: CloudServerConfig,
+        bucketLocationConstraint, requestEndpoint, log) {
-        objectLocationConstraint: string | undefined,
-        bucketLocationConstraint: string | null,
-        requestEndpoint: string,
-        log: RequestLogger,
-    ) {
         if (objectLocationConstraint) {
             if (BackendInfo.isValidLocationConstraint(config,
                 objectLocationConstraint, log)) {
@@ -208,16 +181,16 @@ export default class BackendInfo {
 
     /**
     * Return legacyLocationConstraint
-    * @param config CloudServer config
+    * @param {object} config CloudServer config
-    * @return legacyLocationConstraint;
+    * @return {string | undefined} legacyLocationConstraint;
     */
-    static getLegacyLocationConstraint(config: CloudServerConfig) {
+    static getLegacyLocationConstraint(config) {
         return legacyLocations.find(ll => config.locationConstraints[ll]);
     }
 
     /**
     * Return objectLocationConstraint
-    * @return objectLocationConstraint;
+    * @return {string | undefined} objectLocationConstraint;
     */
     getObjectLocationConstraint() {
         return this._objectLocationConstraint;
@@ -225,7 +198,7 @@ export default class BackendInfo {
 
     /**
     * Return bucketLocationConstraint
-    * @return bucketLocationConstraint;
+    * @return {string | undefined} bucketLocationConstraint;
     */
     getBucketLocationConstraint() {
         return this._bucketLocationConstraint;
@@ -233,7 +206,7 @@ export default class BackendInfo {
 
     /**
     * Return requestEndpoint
-    * @return requestEndpoint;
+    * @return {string} requestEndpoint;
     */
     getRequestEndpoint() {
         return this._requestEndpoint;
@@ -248,9 +221,9 @@ export default class BackendInfo {
     * (4) default locationConstraint for requestEndpoint  if requestEndpoint
     *     is listed in restEndpoints in config.json
     * (5) default data backend
-    * @return locationConstraint;
+    * @return {string} locationConstraint;
     */
-    getControllingLocationConstraint(): string {
+    getControllingLocationConstraint() {
         const objectLC = this.getObjectLocationConstraint();
         const bucketLC = this.getBucketLocationConstraint();
         const reqEndpoint = this.getRequestEndpoint();

lib/models/BucketAzureInfo.ts

@@ -1,86 +1,42 @@
-export type DeleteRetentionPolicy = {
-    enabled: boolean;
-    days: number;
-};
-
 /**
  * Helper class to ease access to the Azure specific information for
  * storage accounts mapped to buckets.
  */
 export default class BucketAzureInfo {
-    _data: {
+    _data
-        sku: string;
+    
-        accessTier: string;
-        kind: string;
-        systemKeys: string[];
-        tenantKeys: string[];
-        subscriptionId: string;
-        resourceGroup: string;
-        deleteRetentionPolicy: DeleteRetentionPolicy;
-        managementPolicies: any[];
-        httpsOnly: boolean;
-        tags: any;
-        networkACL: any[];
-        cname: string;
-        azureFilesAADIntegration: boolean;
-        hnsEnabled: boolean;
-        logging: any;
-        hourMetrics: any;
-        minuteMetrics: any;
-        serviceVersion: string;
-    }
     /**
      * @constructor
-     * @param obj - Raw structure for the Azure info on storage account
+     * @param {object} obj - Raw structure for the Azure info on storage account
-     * @param obj.sku - SKU name of this storage account
+     * @param {string} obj.sku - SKU name of this storage account
-     * @param obj.accessTier - Access Tier name of this storage account
+     * @param {string} obj.accessTier - Access Tier name of this storage account
-     * @param obj.kind - Kind name of this storage account
+     * @param {string} obj.kind - Kind name of this storage account
-     * @param obj.systemKeys - pair of shared keys for the system
+     * @param {string[]} obj.systemKeys - pair of shared keys for the system
-     * @param obj.tenantKeys - pair of shared keys for the tenant
+     * @param {string[]} obj.tenantKeys - pair of shared keys for the tenant
-     * @param obj.subscriptionId - subscription ID the storage account
+     * @param {string} obj.subscriptionId - subscription ID the storage account
      *   belongs to
-     * @param obj.resourceGroup - Resource group name the storage
+     * @param {string} obj.resourceGroup - Resource group name the storage
      *   account belongs to
-     * @param obj.deleteRetentionPolicy - Delete retention policy
+     * @param {object} obj.deleteRetentionPolicy - Delete retention policy
-     * @param obj.deleteRetentionPolicy.enabled -
+     * @param {boolean} obj.deleteRetentionPolicy.enabled -
-     * @param obj.deleteRetentionPolicy.days -
+     * @param {number} obj.deleteRetentionPolicy.days -
-     * @param obj.managementPolicies - Management policies for this
+     * @param {object[]} obj.managementPolicies - Management policies for this
      *   storage account
-     * @param obj.httpsOnly - Server the content of this storage
+     * @param {boolean} obj.httpsOnly - Server the content of this storage
      *   account through HTTPS only
-     * @param obj.tags - Set of tags applied on this storage account
+     * @param {object} obj.tags - Set of tags applied on this storage account
-     * @param obj.networkACL - Network ACL of this storage account
+     * @param {object[]} obj.networkACL - Network ACL of this storage account
-     * @param obj.cname - CNAME of this storage account
+     * @param {string} obj.cname - CNAME of this storage account
-     * @param obj.azureFilesAADIntegration - whether or not Azure
+     * @param {boolean} obj.azureFilesAADIntegration - whether or not Azure
      *   Files AAD Integration is enabled for this storage account
-     * @param obj.hnsEnabled - whether or not a hierarchical namespace
+     * @param {boolean} obj.hnsEnabled - whether or not a hierarchical namespace
      *   is enabled for this storage account
-     * @param obj.logging - service properties: logging
+     * @param {object} obj.logging - service properties: logging
-     * @param obj.hourMetrics - service properties: hourMetrics
+     * @param {object} obj.hourMetrics - service properties: hourMetrics
-     * @param obj.minuteMetrics - service properties: minuteMetrics
+     * @param {object} obj.minuteMetrics - service properties: minuteMetrics
-     * @param obj.serviceVersion - service properties: serviceVersion
+     * @param {string} obj.serviceVersion - service properties: serviceVersion
      */
-    constructor(obj: {
+    constructor(obj) {
-        sku: string;
-        accessTier: string;
-        kind: string;
-        systemKeys: string[];
-        tenantKeys: string[];
-        subscriptionId: string;
-        resourceGroup: string;
-        deleteRetentionPolicy: DeleteRetentionPolicy;
-        managementPolicies: any[];
-        httpsOnly: boolean;
-        tags: any;
-        networkACL: any[];
-        cname: string;
-        azureFilesAADIntegration: boolean;
-        hnsEnabled: boolean;
-        logging: any;
-        hourMetrics: any;
-        minuteMetrics: any;
-        serviceVersion: string;
-    }) {
         this._data = {
             sku: obj.sku,
             accessTier: obj.accessTier,
@@ -108,7 +64,7 @@ export default class BucketAzureInfo {
         return this._data.sku;
     }
 
-    setSku(sku: string) {
+    setSku(sku) {
         this._data.sku = sku;
         return this;
     }
@@ -117,7 +73,7 @@ export default class BucketAzureInfo {
         return this._data.accessTier;
     }
 
-    setAccessTier(accessTier: string) {
+    setAccessTier(accessTier) {
         this._data.accessTier = accessTier;
         return this;
     }
@@ -126,7 +82,7 @@ export default class BucketAzureInfo {
         return this._data.kind;
     }
 
-    setKind(kind: string) {
+    setKind(kind) {
         this._data.kind = kind;
         return this;
     }
@@ -135,7 +91,7 @@ export default class BucketAzureInfo {
         return this._data.systemKeys;
     }
 
-    setSystemKeys(systemKeys: string[]) {
+    setSystemKeys(systemKeys) {
         this._data.systemKeys = systemKeys;
         return this;
     }
@@ -144,7 +100,7 @@ export default class BucketAzureInfo {
         return this._data.tenantKeys;
     }
 
-    setTenantKeys(tenantKeys: string[]) {
+    setTenantKeys(tenantKeys) {
         this._data.tenantKeys = tenantKeys;
         return this;
     }
@@ -153,7 +109,7 @@ export default class BucketAzureInfo {
         return this._data.subscriptionId;
     }
 
-    setSubscriptionId(subscriptionId: string) {
+    setSubscriptionId(subscriptionId) {
         this._data.subscriptionId = subscriptionId;
         return this;
     }
@@ -162,7 +118,7 @@ export default class BucketAzureInfo {
         return this._data.resourceGroup;
     }
 
-    setResourceGroup(resourceGroup: string) {
+    setResourceGroup(resourceGroup) {
         this._data.resourceGroup = resourceGroup;
         return this;
     }
@@ -171,7 +127,7 @@ export default class BucketAzureInfo {
         return this._data.deleteRetentionPolicy;
     }
 
-    setDeleteRetentionPolicy(deleteRetentionPolicy: DeleteRetentionPolicy) {
+    setDeleteRetentionPolicy(deleteRetentionPolicy) {
         this._data.deleteRetentionPolicy = deleteRetentionPolicy;
         return this;
     }
@@ -180,7 +136,7 @@ export default class BucketAzureInfo {
         return this._data.managementPolicies;
     }
 
-    setManagementPolicies(managementPolicies: any[]) {
+    setManagementPolicies(managementPolicies) {
         this._data.managementPolicies = managementPolicies;
         return this;
     }
@@ -189,7 +145,7 @@ export default class BucketAzureInfo {
         return this._data.httpsOnly;
     }
 
-    setHttpsOnly(httpsOnly: boolean) {
+    setHttpsOnly(httpsOnly) {
         this._data.httpsOnly = httpsOnly;
         return this;
     }
@@ -198,7 +154,7 @@ export default class BucketAzureInfo {
         return this._data.tags;
     }
 
-    setTags(tags: any) {
+    setTags(tags) {
         this._data.tags = tags;
         return this;
     }
@@ -207,7 +163,7 @@ export default class BucketAzureInfo {
         return this._data.networkACL;
     }
 
-    setNetworkACL(networkACL: any[]) {
+    setNetworkACL(networkACL) {
         this._data.networkACL = networkACL;
         return this;
     }
@@ -216,7 +172,7 @@ export default class BucketAzureInfo {
         return this._data.cname;
     }
 
-    setCname(cname: string) {
+    setCname(cname) {
         this._data.cname = cname;
         return this;
     }
@@ -225,7 +181,7 @@ export default class BucketAzureInfo {
         return this._data.azureFilesAADIntegration;
     }
 
-    setAzureFilesAADIntegration(azureFilesAADIntegration: boolean) {
+    setAzureFilesAADIntegration(azureFilesAADIntegration) {
         this._data.azureFilesAADIntegration = azureFilesAADIntegration;
         return this;
     }
@@ -234,7 +190,7 @@ export default class BucketAzureInfo {
         return this._data.hnsEnabled;
     }
 
-    setHnsEnabled(hnsEnabled: boolean) {
+    setHnsEnabled(hnsEnabled) {
         this._data.hnsEnabled = hnsEnabled;
         return this;
     }
@@ -243,7 +199,7 @@ export default class BucketAzureInfo {
         return this._data.logging;
     }
 
-    setLogging(logging: any) {
+    setLogging(logging) {
         this._data.logging = logging;
         return this;
     }
@@ -252,7 +208,7 @@ export default class BucketAzureInfo {
         return this._data.hourMetrics;
     }
 
-    setHourMetrics(hourMetrics: any) {
+    setHourMetrics(hourMetrics) {
         this._data.hourMetrics = hourMetrics;
         return this;
     }
@@ -261,7 +217,7 @@ export default class BucketAzureInfo {
         return this._data.minuteMetrics;
     }
 
-    setMinuteMetrics(minuteMetrics: any) {
+    setMinuteMetrics(minuteMetrics) {
         this._data.minuteMetrics = minuteMetrics;
         return this;
     }
@@ -270,7 +226,7 @@ export default class BucketAzureInfo {
         return this._data.serviceVersion;
     }
 
-    setServiceVersion(serviceVersion: any) {
+    setServiceVersion(serviceVersion) {
         this._data.serviceVersion = serviceVersion;
         return this;
     }

lib/models/BucketPolicy.ts

@@ -1,5 +1,6 @@
 import assert from 'assert';
-import errors, { ArsenalError } from '../errors';
+
+import errors from '../errors';
 import { validateResourcePolicy } from '../policy/policyValidator';
 
 /**
@@ -49,21 +50,22 @@ const objectActions = [
 ];
 
 export default class BucketPolicy {
-    _json: string;
+    _json
-    _policy: any;
+    _policy
+    
     /**
      * Create a Bucket Policy instance
-     * @param json - the json policy
+     * @param {string} json - the json policy
-     * @return - BucketPolicy instance
+     * @return {object} - BucketPolicy instance
      */
-    constructor(json: string) {
+    constructor(json) {
         this._json = json;
         this._policy = {};
     }
 
     /**
      * Get the bucket policy
-     * @return - the bucket policy or error
+     * @return {object} - the bucket policy or error
      */
     getBucketPolicy() {
         const policy = this._getPolicy();
@@ -72,12 +74,15 @@ export default class BucketPolicy {
 
     /**
      * Get the bucket policy array
-     * @return - contains error if policy validation fails
+     * @return {object} - contains error if policy validation fails
      */
-    _getPolicy(): { error: ArsenalError } | any {
+    _getPolicy() {
         if (!this._json || this._json === '') {
-            return { error: errors.MalformedPolicy.customizeDescription(
+            return {
-                'request json is empty or undefined') };
+                error: errors.MalformedPolicy.customizeDescription(
+                    'request json is empty or undefined'
+                ),
+            };
         }
         const validSchema = validateResourcePolicy(this._json);
         if (validSchema.error) {
@@ -102,37 +107,45 @@ export default class BucketPolicy {
 
     /**
      * Validate action and resource are compatible
-     * @return - contains error or empty obj
+     * @return {error} - contains error or empty obj
      */
-    _validateActionResource(): { error?: ArsenalError } {
+    _validateActionResource() {
-        const invalid = this._policy.Statement.every((s: any) => {
+        const invalid = this._policy.Statement.every((s) => {
-            const actions: string[] = typeof s.Action === 'string' ?
+            const actions =
-                [s.Action] : s.Action;
+                typeof s.Action === 'string' ? [s.Action] : s.Action;
-            const resources: string[] = typeof s.Resource === 'string' ?
+            const resources =
-                [s.Resource] : s.Resource;
+                typeof s.Resource === 'string' ? [s.Resource] : s.Resource;
-            const objectAction = actions.some(a =>
+            const objectAction = actions.some(
-                a.includes('Object') || objectActions.includes(a));
+                (a) => a.includes('Object') || objectActions.includes(a)
+            );
             // wildcardObjectAction checks for actions such as 's3:*' or
             // 's3:Put*' but will return false for actions such as
             // 's3:PutBucket*'
             const wildcardObjectAction = actions.some(
-                a => a.includes('*') && !a.includes('Bucket'));
+                (a) => a.includes('*') && !a.includes('Bucket')
-            const objectResource = resources.some(r => r.includes('/'));
+            );
-            return ((objectAction && !objectResource) ||
+            const objectResource = resources.some((r) => r.includes('/'));
-                (objectResource && !objectAction && !wildcardObjectAction));
+            return (
+                (objectAction && !objectResource) ||
+                (objectResource && !objectAction && !wildcardObjectAction)
+            );
         });
         if (invalid) {
-            return { error: errors.MalformedPolicy.customizeDescription(
+            return {
-                'Action does not apply to any resource(s) in statement') };
+                error: errors.MalformedPolicy.customizeDescription(
+                    'Action does not apply to any resource(s) in statement'
+                ),
+            };
         }
         return {};
     }
 
     /**
      * Call resource policy schema validation function
-     * @param policy - the bucket policy object to validate
+     * @param {object} policy - the bucket policy object to validate
+     * @return {undefined}
      */
-    static validatePolicy(policy: any) {
+    static validatePolicy(policy) {
         // only the BucketInfo constructor calls this function
         // and BucketInfo will always be passed an object
         const validated = validateResourcePolicy(JSON.stringify(policy));

lib/models/LifecycleRule.ts

@@ -1,37 +1,12 @@
 import uuid from 'uuid/v4';
 
-export type Status = 'Disabled' | 'Enabled';
-export type Tag = { Key: string; Value: string };
-export type Tags = Tag[];
-export type And = { Prefix?: string; Tags: Tags };
-export type Filter = { Prefix?: string; Tag?: Tag } | { And: And };
-export type Expiration = {
-    ExpiredObjectDeleteMarker?: number | boolean;
-    Date?: number | boolean;
-    Days?: number | boolean;
-};
-export type NoncurrentExpiration = {
-    NoncurrentDays: number | null;
-    NewerNoncurrentVersions: number | null;
-};
-
 /**
  * @class LifecycleRule
  *
  * @classdesc Simple get/set class to build a single Rule
  */
 export default class LifecycleRule {
-    id: string;
+    constructor(id, status) {
-    status: Status;
-    tags: Tags;
-    expiration?: Expiration;
-    ncvExpiration?: NoncurrentExpiration;
-    abortMPU?: { DaysAfterInitiation: number };
-    transitions?: any[];
-    ncvTransitions?: any[];
-    prefix?: string;
-
-    constructor(id: string, status: Status) {
         // defaults
         this.id = id || uuid();
         this.status = status === 'Disabled' ? 'Disabled' : 'Enabled';
@@ -39,23 +14,16 @@ export default class LifecycleRule {
     }
 
     build() {
-        const rule: {
+        const rule = {};
-            ID: string;
+
-            Status: Status;
+        rule.ID = this.id;
-            Expiration?: Expiration;
+        rule.Status = this.status;
-            NoncurrentVersionExpiration?: NoncurrentExpiration;
-            AbortIncompleteMultipartUpload?: { DaysAfterInitiation: number };
-            Transitions?: any[];
-            NoncurrentVersionTransitions?: any[];
-            Filter?: Filter;
-            Prefix?: '';
-        } = { ID: this.id, Status: this.status };
 
         if (this.expiration) {
             rule.Expiration = this.expiration;
         }
         if (this.ncvExpiration) {
-            rule.NoncurrentVersionExpiration = this.ncvExpiration
+            rule.NoncurrentVersionExpiration = this.ncvExpiration;
         }
         if (this.abortMPU) {
             rule.AbortIncompleteMultipartUpload = this.abortMPU;
@@ -63,11 +31,26 @@ export default class LifecycleRule {
         if (this.transitions) {
             rule.Transitions = this.transitions;
         }
-        if (this.ncvTransitions) {
-            rule.NoncurrentVersionTransitions = this.ncvTransitions;
-        }
 
-        const filter = this.buildFilter();
+
+        const filter = {};
+        if ((this.prefix && this.tags.length) || (this.tags.length > 1)) {
+            // And rule
+            const andRule = {};
+
+            if (this.prefix) {
+                andRule.Prefix = this.prefix;
+            }
+            andRule.Tags = this.tags;
+            filter.And = andRule;
+        } else {
+            if (this.prefix) {
+                filter.Prefix = this.prefix;
+            }
+            if (this.tags.length) {
+                filter.Tag = this.tags[0];
+            }
+        }
 
         if (Object.keys(filter).length > 0) {
             rule.Filter = filter;
@@ -78,27 +61,7 @@ export default class LifecycleRule {
         return rule;
     }
 
-    buildFilter() {
+    addID(id) {
-        if ((this.prefix && this.tags.length) || this.tags.length > 1) {
-            // And rule
-            const And: And = { Tags: this.tags };
-            if (this.prefix) {
-                And.Prefix = this.prefix;
-            }
-            return { And };
-        } else {
-            const filter: Filter = {};
-            if (this.prefix) {
-                filter.Prefix = this.prefix;
-            }
-            if (this.tags.length > 0) {
-                filter.Tag = this.tags[0];
-            }
-            return filter;
-        }
-    }
-
-    addID(id: string) {
         this.id = id;
         return this;
     }
@@ -108,12 +71,12 @@ export default class LifecycleRule {
         return this;
     }
 
-    addPrefix(prefix: string) {
+    addPrefix(prefix) {
         this.prefix = prefix;
         return this;
     }
 
-    addTag(key: string, value: string) {
+    addTag(key, value) {
         this.tags.push({
             Key: key,
             Value: value,
@@ -123,18 +86,16 @@ export default class LifecycleRule {
 
     /**
     * Expiration
-     * @param prop - Property must be defined in `validProps`
+    * @param {string} prop - Property must be defined in `validProps`
-     * @param value - integer for `Date` or `Days`, or boolean for `ExpiredObjectDeleteMarker`
+    * @param {integer|boolean} value - integer for `Date` or `Days`, or
+    *   boolean for `ExpiredObjectDeleteMarker`
+    * @return {undefined}
     */
-    addExpiration(prop: 'ExpiredObjectDeleteMarker', value: boolean): this;
+    addExpiration(prop, value) {
-    addExpiration(prop: 'Date' | 'Days', value: number): this;
-    addExpiration(prop: string, value: number | boolean) {
         const validProps = ['Date', 'Days', 'ExpiredObjectDeleteMarker'];
-        if (validProps.includes(prop)) {
+        if (validProps.indexOf(prop) > -1) {
             this.expiration = this.expiration || {};
             if (prop === 'ExpiredObjectDeleteMarker') {
-                // FIXME
-                // @ts-expect-error
                 this.expiration[prop] = JSON.parse(value);
             } else {
                 this.expiration[prop] = value;
@@ -145,46 +106,31 @@ export default class LifecycleRule {
 
     /**
     * NoncurrentVersionExpiration
-     * @param prop - Property must be defined in `validProps`
+    * @param {integer} days - NoncurrentDays
-     * @param value - integer for `NoncurrentDays` and `NewerNoncurrentVersions` 
+    * @return {undefined}
     */
-    addNCVExpiration(prop: 'NoncurrentDays' | 'NewerNoncurrentVersions', value: number): this;
+    addNCVExpiration(days) {
-    addNCVExpiration(prop: string, value: number) {
+        this.ncvExpiration = { NoncurrentDays: days };
-        const validProps = ['NoncurrentDays', 'NewerNoncurrentVersions'];
-        if (validProps.includes(prop)) {
-            this.ncvExpiration = this.ncvExpiration || {
-                NoncurrentDays: null,
-                NewerNoncurrentVersions: null,
-            };
-            this.ncvExpiration[prop] = value;
-        }
         return this;
     }
 
     /**
-     * abortincompletemultipartupload
+    * AbortIncompleteMultipartUpload
-     * @param days - DaysAfterInitiation
+    * @param {integer} days - DaysAfterInitiation
+    * @return {undefined}
     */
-    addAbortMPU(days: number) {
+    addAbortMPU(days) {
         this.abortMPU = { DaysAfterInitiation: days };
         return this;
     }
 
     /**
      * Transitions
-     * @param transitions - transitions
+     * @param {array} transitions - transitions
+     * @return {undefined}
      */
-    addTransitions(transitions: any[]) {
+    addTransitions(transitions) {
         this.transitions = transitions;
         return this;
     }
-
-    /**
-     * NonCurrentVersionTransitions
-     * @param nvcTransitions - NonCurrentVersionTransitions 
-     */
-    addNCVTransitions(nvcTransitions) {
-        this.ncvTransitions = nvcTransitions;
-        return this;
-    }
 }

lib/models/NotificationConfiguration.ts

@@ -5,7 +5,7 @@ import {
     supportedNotificationEvents,
     notificationArnPrefix,
 } from '../constants';
-import errors, { ArsenalError } from '../errors';
+import errors from '../errors';
 
 /**
  * Format of xml request:
@@ -52,26 +52,20 @@ import errors, { ArsenalError } from '../errors';
   */
 
 export default class NotificationConfiguration {
-    _parsedXml: any;
-    _config: {
-        error?: ArsenalError;
-        queueConfig?: any[];
-    };
-    _ids: Set<string>;
     /**
      * Create a Notification Configuration instance
-     * @param xml - parsed configuration xml
+     * @param {string} xml - parsed configuration xml
-     * @return - NotificationConfiguration instance
+     * @return {object} - NotificationConfiguration instance
      */
-    constructor(xml: any) {
+    constructor(xml) {
         this._parsedXml = xml;
         this._config = {};
-        this._ids = new Set();
+        this._ids = new Set([]);
     }
 
     /**
      * Get notification configuration
-     * @return - contains error if parsing failed
+     * @return {object} - contains error if parsing failed
      */
     getValidatedNotificationConfiguration() {
         const validationError = this._parseNotificationConfig();
@@ -83,7 +77,7 @@ export default class NotificationConfiguration {
 
     /**
      * Check that notification configuration is valid
-     * @return - error if parsing failed, else undefined
+     * @return {error | null} - error if parsing failed, else undefined
      */
     _parseNotificationConfig() {
         if (!this._parsedXml || this._parsedXml === '') {
@@ -101,19 +95,19 @@ export default class NotificationConfiguration {
             return null;
         }
         this._config.queueConfig = [];
-        let parseError: ArsenalError | undefined;
+        let parseError;
         for (let i = 0; i < queueConfig.length; i++) {
             const eventObj = this._parseEvents(queueConfig[i].Event);
             const filterObj = this._parseFilter(queueConfig[i].Filter);
             const idObj = this._parseId(queueConfig[i].Id);
             const arnObj = this._parseArn(queueConfig[i].Queue);
 
-            if ('error' in eventObj) {
+            if (eventObj.error) {
                 parseError = eventObj.error;
                 this._config = {};
                 break;
             }
-            if ('error' in filterObj) {
+            if (filterObj.error) {
                 parseError = filterObj.error;
                 this._config = {};
                 break;
@@ -135,43 +129,42 @@ export default class NotificationConfiguration {
                 filterRules: filterObj.filterRules,
             });
         }
-        return parseError ?? null;
+        return parseError;
     }
 
     /**
      * Check that events array is valid
-     * @param events - event array
+     * @param {array} events - event array
-     * @return - contains error if parsing failed or events array
+     * @return {object} - contains error if parsing failed or events array
      */
-    _parseEvents(events: any[]) {
+    _parseEvents(events) {
-        if (!events || !events[0]) {
+        const eventsObj = {
-            const msg = 'each queue configuration must contain an event';
+            events: [],
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
-        }
-        const eventsObj: { error?: ArsenalError, events: any[] } = {
-            events: [] as any[],
         };
-        for (const e of events) {
+        if (!events || !events[0]) {
+            eventsObj.error = errors.MalformedXML.customizeDescription(
+                'each queue configuration must contain an event');
+            return eventsObj;
+        }
+        events.forEach(e => {
             if (!supportedNotificationEvents.has(e)) {
-                const msg = 'event array contains invalid or unsupported event';
+                eventsObj.error = errors.MalformedXML.customizeDescription(
-                const error = errors.MalformedXML.customizeDescription(msg);
+                    'event array contains invalid or unsupported event');
-                return { error };
             } else {
                 eventsObj.events.push(e);
             }
-        }
+        });
         return eventsObj;
     }
 
     /**
      * Check that filter array is valid
-     * @param filter - filter array
+     * @param {array} filter - filter array
-     * @return - contains error if parsing failed or filter array
+     * @return {object} - contains error if parsing failed or filter array
      */
-    _parseFilter(filter: any[]) {
+    _parseFilter(filter) {
         if (!filter || !filter[0]) {
-            return { filterRules: undefined };
+            return {};
         }
         if (!filter[0].S3Key || !filter[0].S3Key[0]) {
             return { error: errors.MalformedXML.customizeDescription(
@@ -182,7 +175,7 @@ export default class NotificationConfiguration {
             return { error: errors.MalformedXML.customizeDescription(
                 'if included, queue configuration filter must contain a rule') };
         }
-        const filterObj: { filterRules: { name: string; value: string }[] } = {
+        const filterObj = {
             filterRules: [],
         };
         const ruleArray = filterRules.FilterRule;
@@ -208,15 +201,15 @@ export default class NotificationConfiguration {
 
     /**
      * Check that id string is valid
-     * @param id - id string (optional)
+     * @param {string} id - id string (optional)
-     * @return - contains error if parsing failed or id
+     * @return {object} - contains error if parsing failed or id
      */
-    _parseId(id: string) {
+    _parseId(id) {
         if (id && id[0].length > 255) {
             return { error: errors.InvalidArgument.customizeDescription(
                 'queue configuration ID is greater than 255 characters long') };
         }
-        let validId: string;
+        let validId;
         if (!id || !id[0]) {
             // id is optional property, so create one if not provided or is ''
             // We generate 48-character alphanumeric, unique id for rule
@@ -235,10 +228,10 @@ export default class NotificationConfiguration {
 
     /**
      * Check that arn string is valid
-     * @param arn - queue arn
+     * @param {string} arn - queue arn
-     * @return - contains error if parsing failed or queue arn
+     * @return {object} - contains error if parsing failed or queue arn
      */
-    _parseArn(arn: string) {
+    _parseArn(arn) {
         if (!arn || !arn[0]) {
             return { error: errors.MalformedXML.customizeDescription(
                 'each queue configuration must contain a queue arn'),
@@ -256,21 +249,11 @@ export default class NotificationConfiguration {
 
     /**
      * Get XML representation of notification configuration object
-     * @param config - notification configuration object
+     * @param {object} config - notification configuration object
-     * @return - XML representation of config
+     * @return {string} - XML representation of config
      */
-    static getConfigXML(config: {
+    static getConfigXML(config) {
-        queueConfig: {
+        const xmlArray = [];
-            id: string;
-            events: string[];
-            queueArn: string;
-            filterRules: {
-                name: string;
-                value: string;
-            }[];
-        }[];
-    }) {
-        const xmlArray: string[] = [];
         if (config && config.queueConfig) {
             config.queueConfig.forEach(c => {
                 xmlArray.push('<QueueConfiguration>');
@@ -301,19 +284,20 @@ export default class NotificationConfiguration {
     /**
      * Validate the bucket metadata notification configuration structure and
      * value types
-     * @param config - The notificationconfiguration to validate
+     * @param {object} config - The notificationconfiguration to validate
+     * @return {undefined}
      */
-    static validateConfig(config: any) {
+    static validateConfig(config) {
         assert.strictEqual(typeof config, 'object');
         if (!config.queueConfig) {
             return;
         }
-        config.queueConfig.forEach((q: any) => {
+        config.queueConfig.forEach(q => {
             const { events, queueArn, filterRules, id } = q;
-            events.forEach((e: any) => assert.strictEqual(typeof e, 'string'));
+            events.forEach(e => assert.strictEqual(typeof e, 'string'));
             assert.strictEqual(typeof queueArn, 'string');
             if (filterRules) {
-                filterRules.forEach((f: any) => {
+                filterRules.forEach(f => {
                     assert.strictEqual(typeof f.name, 'string');
                     assert.strictEqual(typeof f.value, 'string');
                 });

lib/models/ObjectLockConfiguration.ts

@@ -1,12 +1,5 @@
 import assert from 'assert';
-import errors, { ArsenalError } from '../errors';
+import errors from '../errors';
-
-export type Config = any;
-export type LockMode = 'GOVERNANCE' | 'COMPLIANCE';
-export type DefaultRetention = { Days: number } | { Years: number };
-export type ParsedRetention =
-    | { error: ArsenalError }
-    | { timeType: 'days' | 'years'; timeValue: number };
 
 /**
  * Format of xml request:
@@ -34,22 +27,19 @@ export type ParsedRetention =
   * }
   */
 export default class ObjectLockConfiguration {
-    _parsedXml: any;
-    _config: Config;
-
     /**
      * Create an Object Lock Configuration instance
-     * @param xml - the parsed configuration xml
+     * @param {string} xml - the parsed configuration xml
-     * @return - ObjectLockConfiguration instance
+     * @return {object} - ObjectLockConfiguration instance
      */
-    constructor(xml: any) {
+    constructor(xml) {
         this._parsedXml = xml;
         this._config = {};
     }
 
     /**
      * Get the object lock configuration
-     * @return - contains error if parsing failed
+     * @return {object} - contains error if parsing failed
      */
     getValidatedObjectLockConfiguration() {
         const validConfig = this._parseObjectLockConfig();
@@ -61,128 +51,131 @@ export default class ObjectLockConfiguration {
 
     /**
      * Check that mode is valid
-     * @param mode - array containing mode value
+     * @param {array} mode - array containing mode value
-     * @return - contains error if parsing failed
+     * @return {object} - contains error if parsing failed
      */
-    _parseMode(mode: LockMode[]): { error: ArsenalError } | { mode: LockMode } {
+    _parseMode(mode) {
+        const validMode = {};
         const expectedModes = ['GOVERNANCE', 'COMPLIANCE'];
         if (!mode || !mode[0]) {
-            const msg = 'request xml does not contain Mode';
+            validMode.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'request xml does not contain Mode');
-            return { error };
+            return validMode;
         }
         if (mode.length > 1) {
-            const msg = 'request xml contains more than one Mode';
+            validMode.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'request xml contains more than one Mode');
-            return { error };
+            return validMode;
         }
         if (!expectedModes.includes(mode[0])) {
-            const msg = 'Mode request xml must be one of "GOVERNANCE", "COMPLIANCE"';
+            validMode.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'Mode request xml must be one of "GOVERNANCE", "COMPLIANCE"');
-            return { error };
+            return validMode;
         }
-        return { mode: mode[0] };
+        validMode.mode = mode[0];
+        return validMode;
     }
 
     /**
      * Check that time limit is valid
-     * @param dr - DefaultRetention object containing days or years
+     * @param {object} dr - DefaultRetention object containing days or years
-     * @return - contains error if parsing failed
+     * @return {object} - contains error if parsing failed
      */
-    _parseTime(dr: DefaultRetention): ParsedRetention {
+    _parseTime(dr) {
-        if ('Days' in dr && 'Years' in dr) {
+        const validTime = {};
-            const msg = 'request xml contains both Days and Years';
+        if (dr.Days && dr.Years) {
-            const error = errors.MalformedXML.customizeDescription(msg);
+            validTime.error = errors.MalformedXML.customizeDescription(
-            return { error };
+                'request xml contains both Days and Years');
+            return validTime;
         }
-        const timeType = 'Days' in dr ? 'Days' : 'Years';
+        const timeType = dr.Days ? 'Days' : 'Years';
         if (!dr[timeType] || !dr[timeType][0]) {
-            const msg = 'request xml does not contain Days or Years';
+            validTime.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'request xml does not contain Days or Years');
-            return { error };
+            return validTime;
         }
         if (dr[timeType].length > 1) {
-            const msg = 'request xml contains more than one retention period';
+            validTime.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'request xml contains more than one retention period');
-            return { error };
+            return validTime;
         }
         const timeValue = Number.parseInt(dr[timeType][0], 10);
         if (Number.isNaN(timeValue)) {
-            const msg = 'request xml does not contain valid retention period';
+            validTime.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'request xml does not contain valid retention period');
-            return { error };
+            return validTime;
         }
         if (timeValue < 1) {
-            const msg = 'retention period must be a positive integer';
+            validTime.error = errors.InvalidArgument.customizeDescription(
-            const error = errors.InvalidArgument.customizeDescription(msg);
+                'retention period must be a positive integer');
-            return { error };
+            return validTime;
         }
         if ((timeType === 'Days' && timeValue > 36500) ||
         (timeType === 'Years' && timeValue > 100)) {
-            const msg = 'retention period is too large';
+            validTime.error = errors.InvalidArgument.customizeDescription(
-            const error = errors.InvalidArgument.customizeDescription(msg);
+                'retention period is too large');
-            return { error };
+            return validTime;
         }
-        return {
+        validTime.timeType = timeType.toLowerCase();
-            timeType: timeType.toLowerCase() as 'days' | 'years',
+        validTime.timeValue = timeValue;
-            timeValue: timeValue,
+        return validTime;
-        };
     }
 
     /**
      * Check that object lock configuration is valid
-     * @return - contains error if parsing failed
+     * @return {object} - contains error if parsing failed
      */
     _parseObjectLockConfig() {
-        const validConfig: { error?: ArsenalError } = {};
+        const validConfig = {};
         if (!this._parsedXml || this._parsedXml === '') {
-            const msg = 'request xml is undefined or empty';
+            validConfig.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'request xml is undefined or empty');
-            return { error };
+            return validConfig;
         }
         const objectLockConfig = this._parsedXml.ObjectLockConfiguration;
         if (!objectLockConfig || objectLockConfig === '') {
-            const msg = 'request xml does not include ObjectLockConfiguration';
+            validConfig.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'request xml does not include ObjectLockConfiguration');
-            return { error };
+            return validConfig;
         }
         const objectLockEnabled = objectLockConfig.ObjectLockEnabled;
         if (!objectLockEnabled || objectLockEnabled[0] !== 'Enabled') {
-            const msg = 'request xml does not include valid ObjectLockEnabled';
+            validConfig.error = errors.MalformedXML.customizeDescription(
-            const error = errors.MalformedXML.customizeDescription(msg);
+                'request xml does not include valid ObjectLockEnabled');
-            return { error };
+            return validConfig;
         }
         const ruleArray = objectLockConfig.Rule;
         if (ruleArray) {
             if (ruleArray.length > 1) {
-                const msg = 'request xml contains more than one rule';
+                validConfig.error = errors.MalformedXML.customizeDescription(
-                const error = errors.MalformedXML.customizeDescription(msg);
+                    'request xml contains more than one rule');
-                return { error };
+                return validConfig;
             }
             const drArray = ruleArray[0].DefaultRetention;
             if (!drArray || !drArray[0] || drArray[0] === '') {
-                const msg = 'Rule request xml does not contain DefaultRetention';
+                validConfig.error = errors.MalformedXML.customizeDescription(
-                const error = errors.MalformedXML.customizeDescription(msg);
+                    'Rule request xml does not contain DefaultRetention');
-                return { error };
+                return validConfig;
             }
             if (!drArray[0].Mode || (!drArray[0].Days && !drArray[0].Years)) {
-                const msg =
+                validConfig.error = errors.MalformedXML.customizeDescription(
                     'DefaultRetention request xml does not contain Mode or ' +
-                    'retention period (Days or Years)';
+                    'retention period (Days or Years)');
-                const error = errors.MalformedXML.customizeDescription(msg);
+                return validConfig;
-                return { error };
             }
             const validMode = this._parseMode(drArray[0].Mode);
-            if ('error' in validMode) {
+            if (validMode.error) {
-                return validMode;
+                validConfig.error = validMode.error;
+                return validConfig;
             }
             const validTime = this._parseTime(drArray[0]);
-            if ('error' in validTime) {
+            if (validTime.error) {
-                return validTime;
+                validConfig.error = validTime.error;
+                return validConfig;
             }
             this._config.rule = {};
             this._config.rule.mode = validMode.mode;
-            this._config.rule[validTime.timeType!] = validTime.timeValue;
+            this._config.rule[validTime.timeType] = validTime.timeValue;
         }
         return validConfig;
     }
@@ -190,9 +183,10 @@ export default class ObjectLockConfiguration {
     /**
      * Validate the bucket metadata object lock configuration structure and
      * value types
-     * @param config - The object lock configuration to validate
+     * @param {object} config - The object lock configuration to validate
+     * @return {undefined}
      */
-    static validateConfig(config: any) {
+    static validateConfig(config) {
         assert.strictEqual(typeof config, 'object');
         const rule = config.rule;
         if (rule) {
@@ -208,10 +202,10 @@ export default class ObjectLockConfiguration {
 
     /**
      * Get the XML representation of the configuration object
-     * @param config - The bucket object lock configuration
+     * @param {object} config - The bucket object lock configuration
-     * @return - The XML representation of the configuration
+     * @return {string} - The XML representation of the configuration
      */
-    static getConfigXML(config: any) {
+    static getConfigXML(config) {
         // object lock is enabled on the bucket but object lock configuration
         // not set
         if (config.rule === undefined) {

lib/models/ObjectMDAmzRestore.ts

@@ -1,94 +0,0 @@
-/*
- * Code based on Yutaka Oishi (Fujifilm) contributions
- * Date: 11 Sep 2020
- */
-
-/**
- * class representing the x-amz-restore of object metadata.
- *
- * @class
- */
-export default class ObjectMDAmzRestore {
-    'expiry-date': Date | string;
-    'ongoing-request': boolean;
-
-    /**
-     *
-     * @constructor
-     * @param ongoingRequest ongoing-request
-     * @param [expiryDate] expiry-date
-     * @throws case of invalid parameter
-     */
-    constructor(ongoingRequest: boolean, expiryDate?: Date | string) {
-        this.setOngoingRequest(ongoingRequest);
-        this.setExpiryDate(expiryDate);
-    }
-
-    /**
-     *
-     * @param data archiveInfo
-     * @returns true if the provided object is valid
-     */
-    static isValid(data: { 'ongoing-request': boolean; 'expiry-date': Date | string }) {
-        try {
-            // eslint-disable-next-line no-new
-            new ObjectMDAmzRestore(data['ongoing-request'], data['expiry-date']);
-            return true;
-        } catch (err) {
-            return false;
-        }
-    }
-
-    /**
-     *
-     * @returns ongoing-request
-     */
-    getOngoingRequest() {
-        return this['ongoing-request'];
-    }
-
-    /**
-     *
-     * @param value ongoing-request
-     * @throws case of invalid parameter
-     */
-    setOngoingRequest(value?: boolean) {
-        if (value === undefined) {
-            throw new Error('ongoing-request is required.');
-        } else if (typeof value !== 'boolean') {
-            throw new Error('ongoing-request must be type of boolean.');
-        }
-        this['ongoing-request'] = value;
-    }
-
-    /**
-     *
-     * @returns expiry-date
-     */
-    getExpiryDate() {
-        return this['expiry-date'];
-    }
-
-    /**
-     *
-     * @param value expiry-date
-     * @throws case of invalid parameter
-     */
-    setExpiryDate(value?: Date | string) {
-        if (value) {
-            const checkWith = (new Date(value)).getTime();
-            if (Number.isNaN(Number(checkWith))) {
-                throw new Error('expiry-date is must be a valid Date.');
-            }
-            this['expiry-date'] = value;
-        }
-    }
-
-    /**
-     *
-     * @returns itself
-     */
-    getValue() {
-        return this;
-    }
-}

lib/models/ObjectMDArchive.ts

@@ -1,184 +0,0 @@
-/**
- * class representing the archive of object metadata.
- *
- * @class
- */
-export default class ObjectMDArchive {
-    archiveInfo: any;
-    // @ts-ignore
-    restoreRequestedAt: Date | string;
-    // @ts-ignore
-    restoreRequestedDays: number;
-    // @ts-ignore
-    restoreCompletedAt: Date | string;
-    // @ts-ignore
-    restoreWillExpireAt: Date | string;
-
-    /**
-     *
-     * @constructor
-     * @param archiveInfo contains the archive info set by the TLP and returned by the TLP jobs
-     * @param [restoreRequestedAt] set at the time restore request is made by the client
-     * @param [restoreRequestedDays] set at the time restore request is made by the client
-     * @param [restoreCompletedAt] set at the time of successful restore
-     * @param [restoreWillExpireAt] computed and stored at the time of restore
-     * @throws case of invalid parameter
-     */
-    constructor(
-        archiveInfo: any,
-        restoreRequestedAt?: Date | string,
-        restoreRequestedDays?: number,
-        restoreCompletedAt?: Date | string,
-        restoreWillExpireAt?: Date | string,
-    ) {
-        this.setArchiveInfo(archiveInfo);
-        this.setRestoreRequestedAt(restoreRequestedAt!);
-        this.setRestoreRequestedDays(restoreRequestedDays!);
-        this.setRestoreCompletedAt(restoreCompletedAt!);
-        this.setRestoreWillExpireAt(restoreWillExpireAt!);
-    }
-
-    /**
-     *
-     * @param data archiveInfo
-     * @returns true if the provided object is valid
-     */
-    static isValid(data: {
-        archiveInfo: any;
-        restoreRequestedAt?: Date;
-        restoreRequestedDays?: number;
-        restoreCompletedAt?: Date;
-        restoreWillExpireAt?: Date;
-    }) {
-        try {
-            // eslint-disable-next-line no-new
-            new ObjectMDArchive(
-                data.archiveInfo,
-                data.restoreRequestedAt,
-                data.restoreRequestedDays,
-                data.restoreCompletedAt,
-                data.restoreWillExpireAt,
-            );
-            return true;
-        } catch (err) {
-            return false;
-        }
-    }
-
-    /**
-     *
-     * @returns archiveInfo
-     */
-    getArchiveInfo() {
-        return this.archiveInfo;
-    }
-
-    /**
-     * @param value archiveInfo
-     * @throws case of invalid parameter
-     */
-    setArchiveInfo(value: any) {
-        if (!value) {
-            throw new Error('archiveInfo is required.');
-        } else if (typeof value !== 'object') {
-            throw new Error('archiveInfo must be type of object.');
-        }
-        this.archiveInfo = value;
-    }
-
-    /**
-     *
-     * @returns restoreRequestedAt
-     */
-    getRestoreRequestedAt() {
-        return this.restoreRequestedAt;
-    }
-    /**
-     * @param value restoreRequestedAt
-     * @throws case of invalid parameter
-     */
-    setRestoreRequestedAt(value: Date | string) {
-        if (value) {
-            const checkWith = (new Date(value)).getTime();
-            if (Number.isNaN(Number(checkWith))) {
-                throw new Error('restoreRequestedAt must be a valid Date.');
-            }
-            this.restoreRequestedAt = value;
-        }
-    }
-
-    /**
-     *
-     * @returns restoreRequestedDays
-     */
-    getRestoreRequestedDays() {
-        return this.restoreRequestedDays;
-    }
-    /**
-     * @param value restoreRequestedDays
-     * @throws case of invalid parameter
-     */
-    setRestoreRequestedDays(value: number) {
-        if (value) {
-            if (isNaN(value)) {
-                throw new Error('restoreRequestedDays must be type of Number.');
-            }
-            this.restoreRequestedDays = value;
-        }
-    }
-
-    /**
-     *
-     * @returns restoreCompletedAt
-     */
-    getRestoreCompletedAt() {
-        return this.restoreCompletedAt;
-    }
-    /**
-     * @param value restoreCompletedAt
-     * @throws case of invalid parameter
-     */
-    setRestoreCompletedAt(value: Date | string) {
-        if (value) {
-            if (!this.restoreRequestedAt || !this.restoreRequestedDays) {
-                throw new Error('restoreCompletedAt must be set after restoreRequestedAt and restoreRequestedDays.');
-            }
-            const checkWith = (new Date(value)).getTime();
-            if (Number.isNaN(Number(checkWith))) {
-                throw new Error('restoreCompletedAt must be a valid Date.');
-            }
-            this.restoreCompletedAt = value;
-        }
-    }
-    /**
-     *
-     * @returns restoreWillExpireAt
-     */
-    getRestoreWillExpireAt() {
-        return this.restoreWillExpireAt;
-    }
-    /**
-     * @param value restoreWillExpireAt
-     * @throws case of invalid parameter
-     */
-    setRestoreWillExpireAt(value: Date | string) {
-        if (value) {
-            if (!this.restoreRequestedAt || !this.restoreRequestedDays) {
-                throw new Error('restoreWillExpireAt must be set after restoreRequestedAt and restoreRequestedDays.');
-            }
-            const checkWith = (new Date(value)).getTime();
-            if (Number.isNaN(Number(checkWith))) {
-                throw new Error('restoreWillExpireAt must be a valid Date.');
-            }
-            this.restoreWillExpireAt = value;
-        }
-    }
-
-    /**
-     *
-     * @returns itself
-     */
-    getValue() {
-        return this;
-    }
-}

lib/models/ObjectMDAzureInfo.ts

@@ -3,60 +3,32 @@
  * Blob and Container objects.
  */
 export default class ObjectMDAzureInfo {
-    _data: {
-        containerPublicAccess: string;
-        containerStoredAccessPolicies: any[];
-        containerImmutabilityPolicy: any;
-        containerLegalHoldStatus: boolean;
-        containerDeletionInProgress: boolean;
-        blobType: string;
-        blobContentMD5: string;
-        blobIssuedETag: string;
-        blobCopyInfo: any;
-        blobSequenceNumber: number;
-        blobAccessTierChangeTime: Date;
-        blobUncommitted: boolean;
-    };
-
     /**
      * @constructor
-     * @param obj - Raw structure for the Azure info on Blob/Container
+     * @param {object} obj - Raw structure for the Azure info on Blob/Container
-     * @param obj.containerPublicAccess - Public access authorization
+     * @param {string} obj.containerPublicAccess - Public access authorization
      *   type
-     * @param obj.containerStoredAccessPolicies - Access policies
+     * @param {object[]} obj.containerStoredAccessPolicies - Access policies
      *   for Shared Access Signature bearer
-     * @param obj.containerImmutabilityPolicy - data immutability
+     * @param {object} obj.containerImmutabilityPolicy - data immutability
      *   policy for this container
-     * @param obj.containerLegalHoldStatus - legal hold status for
+     * @param {boolean} obj.containerLegalHoldStatus - legal hold status for
      *   this container
-     * @param obj.containerDeletionInProgress - deletion in progress
+     * @param {boolean} obj.containerDeletionInProgress - deletion in progress
      *   indicator for this container
-     * @param obj.blobType - defines the type of blob for this object
+     * @param {string} obj.blobType - defines the type of blob for this object
-     * @param obj.blobContentMD5 - whole object MD5 sum set by the
+     * @param {string} obj.blobContentMD5 - whole object MD5 sum set by the
      *   client through the Azure API
-     * @param obj.blobIssuedETag - backup of the issued ETag on MD only
+     * @param {string} obj.blobIssuedETag - backup of the issued ETag on MD only
      *   operations like Set Blob Properties and Set Blob Metadata
-     * @param obj.blobCopyInfo - information pertaining to past and
+     * @param {object} obj.blobCopyInfo - information pertaining to past and
      *   pending copy operation targeting this object
-     * @param obj.blobSequenceNumber - sequence number for a PageBlob
+     * @param {number} obj.blobSequenceNumber - sequence number for a PageBlob
-     * @param obj.blobAccessTierChangeTime - date of change of tier
+     * @param {Date} obj.blobAccessTierChangeTime - date of change of tier
-     * @param obj.blobUncommitted - A block has been put for a
+     * @param {boolean} obj.blobUncommitted - A block has been put for a
      *   nonexistent blob which is about to be created
      */
-    constructor(obj: {
+    constructor(obj) {
-        containerPublicAccess: string;
-        containerStoredAccessPolicies: any[];
-        containerImmutabilityPolicy: any;
-        containerLegalHoldStatus: boolean;
-        containerDeletionInProgress: boolean;
-        blobType: string;
-        blobContentMD5: string;
-        blobIssuedETag: string;
-        blobCopyInfo: any;
-        blobSequenceNumber: number;
-        blobAccessTierChangeTime: Date;
-        blobUncommitted: boolean;
-    }) {
         this._data = {
             containerPublicAccess: obj.containerPublicAccess,
             containerStoredAccessPolicies: obj.containerStoredAccessPolicies,
@@ -77,7 +49,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerPublicAccess;
     }
 
-    setContainerPublicAccess(containerPublicAccess: string) {
+    setContainerPublicAccess(containerPublicAccess) {
         this._data.containerPublicAccess = containerPublicAccess;
         return this;
     }
@@ -86,7 +58,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerStoredAccessPolicies;
     }
 
-    setContainerStoredAccessPolicies(containerStoredAccessPolicies: any[]) {
+    setContainerStoredAccessPolicies(containerStoredAccessPolicies) {
         this._data.containerStoredAccessPolicies =
             containerStoredAccessPolicies;
         return this;
@@ -96,7 +68,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerImmutabilityPolicy;
     }
 
-    setContainerImmutabilityPolicy(containerImmutabilityPolicy: any) {
+    setContainerImmutabilityPolicy(containerImmutabilityPolicy) {
         this._data.containerImmutabilityPolicy = containerImmutabilityPolicy;
         return this;
     }
@@ -105,7 +77,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerLegalHoldStatus;
     }
 
-    setContainerLegalHoldStatus(containerLegalHoldStatus: boolean) {
+    setContainerLegalHoldStatus(containerLegalHoldStatus) {
         this._data.containerLegalHoldStatus = containerLegalHoldStatus;
         return this;
     }
@@ -114,7 +86,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerDeletionInProgress;
     }
 
-    setContainerDeletionInProgress(containerDeletionInProgress: boolean) {
+    setContainerDeletionInProgress(containerDeletionInProgress) {
         this._data.containerDeletionInProgress = containerDeletionInProgress;
         return this;
     }
@@ -123,7 +95,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobType;
     }
 
-    setBlobType(blobType: string) {
+    setBlobType(blobType) {
         this._data.blobType = blobType;
         return this;
     }
@@ -132,7 +104,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobContentMD5;
     }
 
-    setBlobContentMD5(blobContentMD5: string) {
+    setBlobContentMD5(blobContentMD5) {
         this._data.blobContentMD5 = blobContentMD5;
         return this;
     }
@@ -141,7 +113,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobIssuedETag;
     }
 
-    setBlobIssuedETag(blobIssuedETag: string) {
+    setBlobIssuedETag(blobIssuedETag) {
         this._data.blobIssuedETag = blobIssuedETag;
         return this;
     }
@@ -150,7 +122,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobCopyInfo;
     }
 
-    setBlobCopyInfo(blobCopyInfo: any) {
+    setBlobCopyInfo(blobCopyInfo) {
         this._data.blobCopyInfo = blobCopyInfo;
         return this;
     }
@@ -159,7 +131,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobSequenceNumber;
     }
 
-    setBlobSequenceNumber(blobSequenceNumber: number) {
+    setBlobSequenceNumber(blobSequenceNumber) {
         this._data.blobSequenceNumber = blobSequenceNumber;
         return this;
     }
@@ -168,7 +140,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobAccessTierChangeTime;
     }
 
-    setBlobAccessTierChangeTime(blobAccessTierChangeTime: Date) {
+    setBlobAccessTierChangeTime(blobAccessTierChangeTime) {
         this._data.blobAccessTierChangeTime = blobAccessTierChangeTime;
         return this;
     }
@@ -177,7 +149,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobUncommitted;
     }
 
-    setBlobUncommitted(blobUncommitted: boolean) {
+    setBlobUncommitted(blobUncommitted) {
         this._data.blobUncommitted = blobUncommitted;
         return this;
     }

lib/models/ObjectMDLocation.ts

@@ -1,49 +1,28 @@
-export type Ciphered = { cryptoScheme: number; cipheredDataKey: string };
-export type BaseLocation = { key: string; dataStoreName: string };
-export type Location = BaseLocation & {
-    start: number;
-    size: number;
-    dataStoreETag: string;
-    dataStoreVersionId: string;
-    blockId?: string;
-};
-export type ObjectMDLocationData = {
-    key: string;
-    start: number;
-    size: number;
-    dataStoreName: string;
-    dataStoreETag: string;
-    dataStoreVersionId: string;
-    blockId?: string;
-    cryptoScheme?: number;
-    cipheredDataKey?: string;
-};
 /**
  * Helper class to ease access to a single data location in metadata
  * 'location' array
  */
 export default class ObjectMDLocation {
-    _data: ObjectMDLocationData;
     /**
      * @constructor
-     * @param locationObj - single data location info
+     * @param {object} locationObj - single data location info
-     * @param locationObj.key - data backend key
+     * @param {string} locationObj.key - data backend key
-     * @param locationObj.start - index of first data byte of
+     * @param {number} locationObj.start - index of first data byte of
      *   this part in the full object
-     * @param locationObj.size - byte length of data part
+     * @param {number} locationObj.size - byte length of data part
-     * @param locationObj.dataStoreName - type of data store
+     * @param {string} locationObj.dataStoreName - type of data store
-     * @param locationObj.dataStoreETag - internal ETag of
+     * @param {string} locationObj.dataStoreETag - internal ETag of
      *   data part
-     * @param [locationObj.dataStoreVersionId] - versionId,
+     * @param {string} [locationObj.dataStoreVersionId] - versionId,
      *   needed for cloud backends
-     * @param [location.cryptoScheme] - if location data is
+     * @param {number} [location.cryptoScheme] - if location data is
      * encrypted: the encryption scheme version
-     * @param [location.cipheredDataKey] - if location data
+     * @param {string} [location.cipheredDataKey] - if location data
      * is encrypted: the base64-encoded ciphered data key
-     * @param [locationObj.blockId] - blockId of the part,
+     * @param {string} [locationObj.blockId] - blockId of the part,
      *   set by the Azure Blob Service REST API frontend
      */
-    constructor(locationObj: Location | (Location & Ciphered)) {
+    constructor(locationObj) {
         this._data = {
             key: locationObj.key,
             start: locationObj.start,
@@ -53,7 +32,7 @@ export default class ObjectMDLocation {
             dataStoreVersionId: locationObj.dataStoreVersionId,
             blockId: locationObj.blockId,
         };
-        if ('cryptoScheme' in locationObj) {
+        if (locationObj.cryptoScheme) {
             this._data.cryptoScheme = locationObj.cryptoScheme;
             this._data.cipheredDataKey = locationObj.cipheredDataKey;
         }
@@ -70,17 +49,17 @@ export default class ObjectMDLocation {
     /**
      * Update data location with new info
      *
-     * @param location - single data location info
+     * @param {object} location - single data location info
-     * @param location.key - data backend key
+     * @param {string} location.key - data backend key
-     * @param location.dataStoreName - type of data store
+     * @param {string} location.dataStoreName - type of data store
-     * @param [location.dataStoreVersionId] - data backend version ID
+     * @param {string} [location.dataStoreVersionId] - data backend version ID
-     * @param [location.cryptoScheme] - if location data is
+     * @param {number} [location.cryptoScheme] - if location data is
      * encrypted: the encryption scheme version
-     * @param [location.cipheredDataKey] - if location data
+     * @param {string} [location.cipheredDataKey] - if location data
      * is encrypted: the base64-encoded ciphered data key
-     * @return return this
+     * @return {ObjectMDLocation} return this
      */
-    setDataLocation(location: BaseLocation | (BaseLocation & Ciphered)) {
+    setDataLocation(location) {
         [
             'key',
             'dataStoreName',
@@ -117,16 +96,11 @@ export default class ObjectMDLocation {
         return this._data.start;
     }
 
-    setPartStart(start: number) {
-        this._data.start = start;
-        return this;
-    }
-
     getPartSize() {
         return this._data.size;
     }
 
-    setPartSize(size: number) {
+    setPartSize(size) {
         this._data.size = size;
         return this;
     }
@@ -143,7 +117,7 @@ export default class ObjectMDLocation {
         return this._data.blockId;
     }
 
-    setBlockId(blockId: string) {
+    setBlockId(blockId) {
         this._data.blockId = blockId;
         return this;
     }

lib/models/ReplicationConfiguration.ts

@@ -1,16 +1,17 @@
 import assert from 'assert';
 import UUID from 'uuid';
 
-import { RequestLogger } from 'werelogs';
-
 import escapeForXml from '../s3middleware/escapeForXml';
 import errors from '../errors';
 import { isValidBucketName } from '../s3routes/routesUtils';
-import { Status } from './LifecycleRule';
 
 const MAX_RULES = 1000;
 const RULE_ID_LIMIT = 255;
-const validStorageClasses = ['STANDARD', 'STANDARD_IA', 'REDUCED_REDUNDANCY'];
+const validStorageClasses = [
+    'STANDARD',
+    'STANDARD_IA',
+    'REDUCED_REDUNDANCY',
+];
 
 /**
     Example XML request:
@@ -36,45 +37,27 @@ const validStorageClasses = ['STANDARD', 'STANDARD_IA', 'REDUCED_REDUNDANCY'];
     </ReplicationConfiguration>
 */
 
-export type Rule = {
-    prefix: string;
-    enabled: boolean;
-    id: string;
-    storageClass?: any;
-};
-
-export type Destination = { StorageClass: string[]; Bucket: string };
-export type XMLRule = {
-    Prefix: string[];
-    Status: Status[];
-    ID?: string[];
-    Destination: Destination[];
-    Transition?: any[];
-    NoncurrentVersionTransition?: any[];
-    Filter?: string;
-};
-
 export default class ReplicationConfiguration {
-    _parsedXML: any;
+    _parsedXML
-    _log: RequestLogger;
+    _log
-    _config: any;
+    _config
-    _configPrefixes: string[];
+    _configPrefixes
-    _configIDs: string[];
+    _configIDs
-    _role: string | null;
+    _role
-    _destination: string | null;
+    _destination
-    _rules: Rule[] | null;
+    _rules
-    _prevStorageClass: null;
+    _prevStorageClass
-    _hasScalityDestination: boolean | null;
+    _hasScalityDestination
-    _preferredReadLocation: string | null;
+    _preferredReadLocation
 
     /**
      * Create a ReplicationConfiguration instance
-     * @param xml - The parsed XML
+     * @param {string} xml - The parsed XML
-     * @param log - Werelogs logger
+     * @param {object} log - Werelogs logger
-     * @param config - S3 server configuration
+     * @param {object} config - S3 server configuration
-     * @return - ReplicationConfiguration instance
+     * @return {object} - ReplicationConfiguration instance
      */
-    constructor(xml: any, log: RequestLogger, config: any) {
+    constructor(xml, log, config) {
         this._parsedXML = xml;
         this._log = log;
         this._config = config;
@@ -93,7 +76,7 @@ export default class ReplicationConfiguration {
 
     /**
      * Get the role of the bucket replication configuration
-     * @return - The role if defined, otherwise `null`
+     * @return {string|null} - The role if defined, otherwise `null`
      */
     getRole() {
         return this._role;
@@ -101,7 +84,7 @@ export default class ReplicationConfiguration {
 
     /**
      * The bucket to replicate data to
-     * @return - The bucket if defined, otherwise `null`
+     * @return {string|null} - The bucket if defined, otherwise `null`
      */
     getDestination() {
         return this._destination;
@@ -109,7 +92,7 @@ export default class ReplicationConfiguration {
 
     /**
      * The rules for replication configuration
-     * @return - The rules if defined, otherwise `null`
+     * @return {string|null} - The rules if defined, otherwise `null`
      */
     getRules() {
         return this._rules;
@@ -129,7 +112,7 @@ export default class ReplicationConfiguration {
 
     /**
      * Get the replication configuration
-     * @return - The replication configuration
+     * @return {object} - The replication configuration
      */
     getReplicationConfiguration() {
         return {
@@ -142,22 +125,18 @@ export default class ReplicationConfiguration {
 
     /**
      * Build the rule object from the parsed XML of the given rule
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
-     * @return - The rule object to push into the `Rules` array
+     * @return {object} - The rule object to push into the `Rules` array
      */
-    _buildRuleObject(rule: XMLRule) {
+    _buildRuleObject(rule) {
-        const base = {
+        const obj = {
-            id: '',
             prefix: rule.Prefix[0],
             enabled: rule.Status[0] === 'Enabled',
         };
-        const obj: Rule = { ...base };
         // ID is an optional property, but create one if not provided or is ''.
         // We generate a 48-character alphanumeric, unique ID for the rule.
-        obj.id =
+        obj.id = rule.ID && rule.ID[0] !== '' ? rule.ID[0] :
-            rule.ID && rule.ID[0] !== ''
+            Buffer.from(UUID.v4()).toString('base64');
-                ? rule.ID[0]
-                : Buffer.from(UUID.v4()).toString('base64');
         // StorageClass is an optional property.
         if (rule.Destination[0].StorageClass) {
             obj.storageClass = rule.Destination[0].StorageClass[0];
@@ -167,10 +146,10 @@ export default class ReplicationConfiguration {
 
     /**
      * Check if the Role field of the replication configuration is valid
-     * @param ARN - The Role field value provided in the configuration
+     * @param {string} ARN - The Role field value provided in the configuration
-     * @return `true` if a valid role ARN, `false` otherwise
+     * @return {boolean} `true` if a valid role ARN, `false` otherwise
      */
-    _isValidRoleARN(ARN: string) {
+    _isValidRoleARN(ARN) {
         // AWS accepts a range of values for the Role field. Though this does
         // not encompass all constraints imposed by AWS, we have opted to
         // enforce the following.
@@ -187,32 +166,30 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Role` property of the configuration is valid
+     * @return {undefined}
      */
     _parseRole() {
         const parsedRole = this._parsedXML.ReplicationConfiguration.Role;
         if (!parsedRole) {
             return errors.MalformedXML;
         }
-        const role: string = parsedRole[0];
+        const role = parsedRole[0];
         const rolesArr = role.split(',');
         if (this._hasScalityDestination && rolesArr.length !== 2) {
             return errors.InvalidArgument.customizeDescription(
                 'Invalid Role specified in replication configuration: ' +
-                    'Role must be a comma-separated list of two IAM roles'
+                'Role must be a comma-separated list of two IAM roles');
-            );
         }
         if (!this._hasScalityDestination && rolesArr.length > 1) {
             return errors.InvalidArgument.customizeDescription(
                 'Invalid Role specified in replication configuration: ' +
-                    'Role may not contain a comma separator'
+                'Role may not contain a comma separator');
-            );
         }
-        const invalidRole = rolesArr.find((r) => !this._isValidRoleARN(r));
+        const invalidRole = rolesArr.find(r => !this._isValidRoleARN(r));
         if (invalidRole !== undefined) {
             return errors.InvalidArgument.customizeDescription(
                 'Invalid Role specified in replication configuration: ' +
-                    `'${invalidRole}'`
+                `'${invalidRole}'`);
-            );
         }
         this._role = role;
         return undefined;
@@ -220,6 +197,7 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Rules` property array is valid
+     * @return {undefined}
      */
     _parseRules() {
         // Note that the XML uses 'Rule' while the config object uses 'Rules'.
@@ -229,8 +207,7 @@ export default class ReplicationConfiguration {
         }
         if (Rule.length > MAX_RULES) {
             return errors.InvalidRequest.customizeDescription(
-                'Number of defined replication rules cannot exceed 1000'
+                'Number of defined replication rules cannot exceed 1000');
-            );
         }
         const err = this._parseEachRule(Rule);
         if (err) {
@@ -241,16 +218,15 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that each rule in the `Rules` property array is valid
-     * @param rules - The rule array from this._parsedXML
+     * @param {array} rules - The rule array from this._parsedXML
+     * @return {undefined}
      */
-    _parseEachRule(rules: XMLRule[]) {
+    _parseEachRule(rules) {
-        const rulesArr: Rule[] = [];
+        const rulesArr = [];
         for (let i = 0; i < rules.length; i++) {
             const err =
-                this._parseStatus(rules[i]) ||
+                this._parseStatus(rules[i]) || this._parsePrefix(rules[i]) ||
-                this._parsePrefix(rules[i]) ||
+                this._parseID(rules[i]) || this._parseDestination(rules[i]);
-                this._parseID(rules[i]) ||
-                this._parseDestination(rules[i]);
             if (err) {
                 return err;
             }
@@ -262,9 +238,10 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Status` property is valid
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {undefined}
      */
-    _parseStatus(rule: XMLRule) {
+    _parseStatus(rule) {
         const status = rule.Status && rule.Status[0];
         if (!status || !['Enabled', 'Disabled'].includes(status)) {
             return errors.MalformedXML;
@@ -274,19 +251,18 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Prefix` property is valid
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {undefined}
      */
-    _parsePrefix(rule: XMLRule) {
+    _parsePrefix(rule) {
         const prefix = rule.Prefix && rule.Prefix[0];
         // An empty string prefix should be allowed.
         if (!prefix && prefix !== '') {
             return errors.MalformedXML;
         }
         if (prefix.length > 1024) {
-            return errors.InvalidArgument.customizeDescription(
+            return errors.InvalidArgument.customizeDescription('Rule prefix ' +
-                'Rule prefix ' +
+                'cannot be longer than maximum allowed key length of 1024');
-                    'cannot be longer than maximum allowed key length of 1024'
-            );
         }
         // Each Prefix in a list of rules must not overlap. For example, two
         // prefixes 'TaxDocs' and 'TaxDocs/2015' are overlapping. An empty
@@ -294,9 +270,8 @@ export default class ReplicationConfiguration {
         for (let i = 0; i < this._configPrefixes.length; i++) {
             const used = this._configPrefixes[i];
             if (prefix.startsWith(used) || used.startsWith(prefix)) {
-                return errors.InvalidRequest.customizeDescription(
+                return errors.InvalidRequest.customizeDescription('Found ' +
-                    'Found ' + `overlapping prefixes '${used}' and '${prefix}'`
+                    `overlapping prefixes '${used}' and '${prefix}'`);
-                );
             }
         }
         this._configPrefixes.push(prefix);
@@ -305,20 +280,19 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `ID` property is valid
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {undefined}
      */
-    _parseID(rule: XMLRule) {
+    _parseID(rule) {
         const id = rule.ID && rule.ID[0];
         if (id && id.length > RULE_ID_LIMIT) {
-            return errors.InvalidArgument.customizeDescription(
+            return errors.InvalidArgument
-                'Rule Id cannot be greater than 255'
+                .customizeDescription('Rule Id cannot be greater than 255');
-            );
         }
         // Each ID in a list of rules must be unique.
-        if (id && this._configIDs.includes(id)) {
+        if (this._configIDs.includes(id)) {
             return errors.InvalidRequest.customizeDescription(
-                'Rule Id must be unique'
+                'Rule Id must be unique');
-            );
         }
         if (id !== undefined) {
             this._configIDs.push(id);
@@ -328,14 +302,15 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `StorageClass` property is valid
-     * @param destination - The destination object from this._parsedXML
+     * @param {object} destination - The destination object from this._parsedXML
+     * @return {undefined}
      */
-    _parseStorageClass(destination: Destination) {
+    _parseStorageClass(destination) {
         const { replicationEndpoints } = this._config;
         // The only condition where the default endpoint is possibly undefined
         // is if there is only a single replication endpoint.
         const defaultEndpoint =
-            replicationEndpoints.find((endpoint: any) => endpoint.default) ||
+            replicationEndpoints.find(endpoint => endpoint.default) ||
             replicationEndpoints[0];
         // StorageClass is optional.
         if (destination.StorageClass === undefined) {
@@ -357,15 +332,9 @@ export default class ReplicationConfiguration {
                     defaultEndpoint.type === undefined;
                 return true;
             }
-            const endpoint = replicationEndpoints.find(
+            const endpoint = replicationEndpoints.find(endpoint =>
-                (endpoint: any) => endpoint.site === storageClass
+                endpoint.site === storageClass);
-            );
             if (endpoint) {
-                // We do not support replication to cold location. 
-                // Only transition to cold location is supported.
-                if (endpoint.site && this._config.locationConstraints[endpoint.site]?.isCold) {
-                    return false;
-                }
                 // If this._hasScalityDestination was not set to true in any
                 // previous iteration or by a prior rule's storage class, then
                 // check if the current endpoint is a Scality destination.
@@ -386,9 +355,10 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Bucket` property is valid
-     * @param destination - The destination object from this._parsedXML
+     * @param {object} destination - The destination object from this._parsedXML
+     * @return {undefined}
      */
-    _parseBucket(destination: Destination) {
+    _parseBucket(destination) {
         const parsedBucketARN = destination.Bucket;
         // If there is no Scality destination, we get the destination bucket
         // from the location configuration.
@@ -401,8 +371,7 @@ export default class ReplicationConfiguration {
         const bucketARN = parsedBucketARN[0];
         if (!bucketARN) {
             return errors.InvalidArgument.customizeDescription(
-                'Destination bucket cannot be null or empty'
+                'Destination bucket cannot be null or empty');
-            );
         }
         const arr = bucketARN.split(':');
         const isValidARN =
@@ -412,20 +381,17 @@ export default class ReplicationConfiguration {
             arr[3] === '' &&
             arr[4] === '';
         if (!isValidARN) {
-            return errors.InvalidArgument.customizeDescription(
+            return errors.InvalidArgument
-                'Invalid bucket ARN'
+                .customizeDescription('Invalid bucket ARN');
-            );
         }
         if (!isValidBucketName(arr[5], [])) {
-            return errors.InvalidArgument.customizeDescription(
+            return errors.InvalidArgument
-                'The specified bucket is not valid'
+                .customizeDescription('The specified bucket is not valid');
-            );
         }
         // We can replicate objects only to one destination bucket.
         if (this._destination && this._destination !== bucketARN) {
             return errors.InvalidRequest.customizeDescription(
-                'The destination bucket must be same for all rules'
+                'The destination bucket must be same for all rules');
-            );
         }
         this._destination = bucketARN;
         return undefined;
@@ -433,9 +399,10 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `destination` property is valid
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {undefined}
      */
-    _parseDestination(rule: XMLRule) {
+    _parseDestination(rule) {
         const dest = rule.Destination && rule.Destination[0];
         if (!dest) {
             return errors.MalformedXML;
@@ -449,6 +416,7 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the request configuration is valid
+     * @return {undefined}
      */
     parseConfiguration() {
         const err = this._parseRules();
@@ -460,62 +428,48 @@ export default class ReplicationConfiguration {
 
     /**
      * Get the XML representation of the configuration object
-     * @param config - The bucket replication configuration
+     * @param {object} config - The bucket replication configuration
-     * @return - The XML representation of the configuration
+     * @return {string} - The XML representation of the configuration
      */
-    static getConfigXML(config: {
+    static getConfigXML(config) {
-        role: string;
-        destination: string;
-        rules: Rule[];
-    }) {
         const { role, destination, rules } = config;
         const Role = `<Role>${escapeForXml(role)}</Role>`;
         const Bucket = `<Bucket>${escapeForXml(destination)}</Bucket>`;
-        const rulesXML = rules
+        const rulesXML = rules.map(rule => {
-            .map((rule) => {
             const { prefix, enabled, storageClass, id } = rule;
-                const Prefix =
+            const Prefix = prefix === '' ? '<Prefix/>' :
-                    prefix === ''
+                `<Prefix>${escapeForXml(prefix)}</Prefix>`;
-                        ? '<Prefix/>'
+            const Status =
-                        : `<Prefix>${escapeForXml(prefix)}</Prefix>`;
+                `<Status>${enabled ? 'Enabled' : 'Disabled'}</Status>`;
-                const Status = `<Status>${
+            const StorageClass = storageClass ?
-                    enabled ? 'Enabled' : 'Disabled'
+                `<StorageClass>${storageClass}</StorageClass>` : '';
-                }</Status>`;
+            const Destination =
-                const StorageClass = storageClass
+                `<Destination>${Bucket}${StorageClass}</Destination>`;
-                    ? `<StorageClass>${storageClass}</StorageClass>`
-                    : '';
-                const Destination = `<Destination>${Bucket}${StorageClass}</Destination>`;
             // If the ID property was omitted in the configuration object, we
             // create an ID for the rule. Hence it is always defined.
             const ID = `<ID>${escapeForXml(id)}</ID>`;
             return `<Rule>${ID}${Prefix}${Status}${Destination}</Rule>`;
-            })
+        }).join('');
-            .join('');
+        return '<?xml version="1.0" encoding="UTF-8"?>' +
-        return (
-            '<?xml version="1.0" encoding="UTF-8"?>' +
             '<ReplicationConfiguration ' +
                 'xmlns="http://s3.amazonaws.com/doc/2006-03-01/">' +
                 `${rulesXML}${Role}` +
-            '</ReplicationConfiguration>'
+            '</ReplicationConfiguration>';
-        );
     }
 
     /**
      * Validate the bucket metadata replication configuration structure and
      * value types
-     * @param config - The replication configuration to validate
+     * @param {object} config - The replication configuration to validate
+     * @return {undefined}
      */
-    static validateConfig(config: {
+    static validateConfig(config) {
-        role: string;
-        destination: string;
-        rules: Rule[];
-    }) {
         assert.strictEqual(typeof config, 'object');
         const { role, rules, destination } = config;
         assert.strictEqual(typeof role, 'string');
         assert.strictEqual(typeof destination, 'string');
         assert.strictEqual(Array.isArray(rules), true);
-        rules.forEach((rule) => {
+        rules.forEach(rule => {
             assert.strictEqual(typeof rule, 'object');
             const { prefix, enabled, id, storageClass } = rule;
             assert.strictEqual(typeof prefix, 'string');

lib/models/WebsiteConfiguration.ts

@@ -1,41 +1,25 @@
-/**
- * @param protocol - protocol to use for redirect
- * @param hostName - hostname to use for redirect
- * @param replaceKeyPrefixWith - string to replace keyPrefixEquals specified in condition
- * @param replaceKeyWith - string to replace key
- * @param httpRedirectCode - http redirect code
- */
-export type Redirect = {
-    protocol?: string;
-    hostName?: string;
-    replaceKeyPrefixWith?: string;
-    replaceKeyWith?: string;
-    httpRedirectCode: string;
-};
-
-/**
- * @param keyPrefixEquals - key prefix that triggers a redirect
- * @param httpErrorCodeReturnedEquals - http code that triggers a redirect
- */
-export type Condition = {
-    keyPrefixEquals?: string;
-    httpErrorCodeReturnedEquals?: string;
-};
-
-export type RoutingRuleParams = { redirect: Redirect; condition?: Condition };
-
 export class RoutingRule {
-    _redirect?: Redirect;
+    _redirect;
-    _condition?: Condition;
+    _condition;
 
     /**
     * Represents a routing rule in a website configuration.
     * @constructor
-    * @param params - object containing redirect and condition objects
+    * @param {object} params - object containing redirect and condition objects
-    * @param params.redirect - specifies how to redirect requests
+    * @param {object} params.redirect - specifies how to redirect requests
-    * @param [params.condition] - specifies conditions for a redirect
+    * @param {string} [params.redirect.protocol] - protocol to use for redirect
+    * @param {string} [params.redirect.hostName] - hostname to use for redirect
+    * @param {string} [params.redirect.replaceKeyPrefixWith] - string to replace
+    *   keyPrefixEquals specified in condition
+    * @param {string} [params.redirect.replaceKeyWith] - string to replace key
+    * @param {string} [params.redirect.httpRedirectCode] - http redirect code
+    * @param {object} [params.condition] - specifies conditions for a redirect
+    * @param {string} [params.condition.keyPrefixEquals] - key prefix that
+    *   triggers a redirect
+    * @param {string} [params.condition.httpErrorCodeReturnedEquals] - http code
+    *   that triggers a redirect
     */
-    constructor(params?: RoutingRuleParams) {
+    constructor(params) {
         if (params) {
             this._redirect = params.redirect;
             this._condition = params.condition;
@@ -44,7 +28,7 @@ export class RoutingRule {
 
     /**
     * Return copy of rule as plain object
-    * @return rule;
+    * @return {object} rule;
     */
     getRuleObject() {
         const rule = {
@@ -56,7 +40,7 @@ export class RoutingRule {
 
     /**
     * Return the condition object
-    * @return condition;
+    * @return {object} condition;
     */
     getCondition() {
         return this._condition;
@@ -64,45 +48,36 @@ export class RoutingRule {
 
     /**
     * Return the redirect object
-    * @return redirect;
+    * @return {object} redirect;
     */
     getRedirect() {
         return this._redirect;
     }
 }
 
-export type RedirectAllRequestsTo = {
-    hostName: string;
-    protocol?: string;
-};
 export class WebsiteConfiguration {
-    _indexDocument?: string;
+    _indexDocument;
-    _errorDocument?: string;
+    _errorDocument;
-    _redirectAllRequestsTo?: RedirectAllRequestsTo;
+    _redirectAllRequestsTo;
-    _routingRules?: RoutingRule[];
+    _routingRules;
 
     /**
     * Object that represents website configuration
     * @constructor
-    * @param params - object containing params to construct Object
+    * @param {object} params - object containing params to construct Object
-    * @param params.indexDocument - key for index document object
+    * @param {string} params.indexDocument - key for index document object
     *   required when redirectAllRequestsTo is undefined
-    * @param [params.errorDocument] - key for error document object
+    * @param {string} [params.errorDocument] - key for error document object
-    * @param params.redirectAllRequestsTo - object containing info
+    * @param {object} params.redirectAllRequestsTo - object containing info
     *   about how to redirect all requests
-    * @param params.redirectAllRequestsTo.hostName - hostName to use
+    * @param {string} params.redirectAllRequestsTo.hostName - hostName to use
     *   when redirecting all requests
-    * @param [params.redirectAllRequestsTo.protocol] - protocol to use
+    * @param {string} [params.redirectAllRequestsTo.protocol] - protocol to use
     *   when redirecting all requests ('http' or 'https')
-    * @param params.routingRules - array of Routing
+    * @param {(RoutingRule[]|object[])} params.routingRules - array of Routing
     *   Rule instances or plain routing rule objects to cast as RoutingRule's
     */
-    constructor(params: {
+    constructor(params) {
-        indexDocument: string;
-        errorDocument: string;
-        redirectAllRequestsTo: RedirectAllRequestsTo;
-        routingRules: RoutingRule[] | any[],
-    }) {
         if (params) {
             this._indexDocument = params.indexDocument;
             this._errorDocument = params.errorDocument;
@@ -113,34 +88,35 @@ export class WebsiteConfiguration {
 
     /**
     * Return plain object with configuration info
-    * @return - Object copy of class instance
+    * @return {object} - Object copy of class instance
     */
     getConfig() {
-        const base = {
+        const websiteConfig = {
             indexDocument: this._indexDocument,
             errorDocument: this._errorDocument,
             redirectAllRequestsTo: this._redirectAllRequestsTo,
         };
         if (this._routingRules) {
-            const routingRules = this._routingRules.map(r => r.getRuleObject());
+            websiteConfig.routingRules =
-            return { ...base, routingRules };
+            this._routingRules.map(rule => rule.getRuleObject());
         }
-        return { ...base };
+        return websiteConfig;
     }
 
     /**
     * Set the redirectAllRequestsTo
-    * @param obj - object to set as redirectAllRequestsTo
+    * @param {object} obj - object to set as redirectAllRequestsTo
-    * @param obj.hostName - hostname for redirecting all requests
+    * @param {string} obj.hostName - hostname for redirecting all requests
-    * @param [obj.protocol] - protocol for redirecting all requests
+    * @param {object} [obj.protocol] - protocol for redirecting all requests
+    * @return {undefined};
     */
-    setRedirectAllRequestsTo(obj: { hostName: string; protocol?: string }) {
+    setRedirectAllRequestsTo(obj) {
         this._redirectAllRequestsTo = obj;
     }
 
     /**
     * Return the redirectAllRequestsTo object
-    * @return redirectAllRequestsTo;
+    * @return {object} redirectAllRequestsTo;
     */
     getRedirectAllRequestsTo() {
         return this._redirectAllRequestsTo;
@@ -148,15 +124,16 @@ export class WebsiteConfiguration {
 
     /**
     * Set the index document object name
-    * @param suffix - index document object key
+    * @param {string} suffix - index document object key
+    * @return {undefined};
     */
-    setIndexDocument(suffix: string) {
+    setIndexDocument(suffix) {
         this._indexDocument = suffix;
     }
 
     /**
      * Get the index document object name
-     * @return indexDocument
+     * @return {string} indexDocument
      */
     getIndexDocument() {
         return this._indexDocument;
@@ -164,15 +141,16 @@ export class WebsiteConfiguration {
 
     /**
      * Set the error document object name
-     * @param key - error document object key
+     * @param {string} key - error document object key
+     * @return {undefined};
      */
-    setErrorDocument(key: string) {
+    setErrorDocument(key) {
         this._errorDocument = key;
     }
 
     /**
      * Get the error document object name
-     * @return errorDocument
+     * @return {string} errorDocument
      */
     getErrorDocument() {
         return this._errorDocument;
@@ -180,9 +158,10 @@ export class WebsiteConfiguration {
 
     /**
     * Set the whole RoutingRules array
-    * @param array - array to set as instance's RoutingRules
+    * @param {array} array - array to set as instance's RoutingRules
+    * @return {undefined};
     */
-    setRoutingRules(array?: (RoutingRule | RoutingRuleParams)[]) {
+    setRoutingRules(array) {
         if (array) {
             this._routingRules = array.map(rule => {
                 if (rule instanceof RoutingRule) {
@@ -195,9 +174,10 @@ export class WebsiteConfiguration {
 
     /**
      * Add a RoutingRule instance to routingRules array
-     * @param obj - rule to add to array
+     * @param {object} obj - rule to add to array
+     * @return {undefined};
      */
-    addRoutingRule(obj?: RoutingRule | RoutingRuleParams) {
+    addRoutingRule(obj) {
         if (!this._routingRules) {
             this._routingRules = [];
         }
@@ -210,7 +190,7 @@ export class WebsiteConfiguration {
 
     /**
      * Get routing rules
-     * @return - array of RoutingRule instances
+     * @return {RoutingRule[]} - array of RoutingRule instances
      */
     getRoutingRules() {
         return this._routingRules;

lib/models/index.ts

@@ -1,16 +1,14 @@
-export { default as ARN } from './ARN';
 export { default as BackendInfo } from './BackendInfo';
-export { default as BucketAzureInfo } from './BucketAzureInfo';
 export { default as BucketInfo } from './BucketInfo';
-export { default as BucketPolicy } from './BucketPolicy';
+export { default as BucketAzureInfo } from './BucketAzureInfo';
+export { default as ObjectMD } from './ObjectMD';
+export { default as ObjectMDLocation } from './ObjectMDLocation';
+export { default as ObjectMDAzureInfo } from './ObjectMDAzureInfo';
+export { default as ARN } from './ARN';
+export * as WebsiteConfiguration from './WebsiteConfiguration';
+export { default as ReplicationConfiguration } from './ReplicationConfiguration';
 export { default as LifecycleConfiguration } from './LifecycleConfiguration';
 export { default as LifecycleRule } from './LifecycleRule';
-export { default as NotificationConfiguration } from './NotificationConfiguration';
+export { default as BucketPolicy } from './BucketPolicy';
 export { default as ObjectLockConfiguration } from './ObjectLockConfiguration';
-export { default as ObjectMD } from './ObjectMD';
+export { default as NotificationConfiguration } from './NotificationConfiguration';
-export { default as ObjectMDAmzRestore } from './ObjectMDAmzRestore';
-export { default as ObjectMDArchive } from './ObjectMDArchive';
-export { default as ObjectMDAzureInfo } from './ObjectMDAzureInfo';
-export { default as ObjectMDLocation } from './ObjectMDLocation';
-export { default as ReplicationConfiguration } from './ReplicationConfiguration';
-export * as WebsiteConfiguration from './WebsiteConfiguration';

lib/network/RoundRobin.ts

@@ -1,13 +1,12 @@
-import { Logger } from 'werelogs';
-
 const DEFAULT_STICKY_COUNT = 100;
 
 /**
  * Shuffle an array in-place
  *
- * @param array - The array to shuffle
+ * @param {Array} array - The array to shuffle
+ * @return {undefined}
  */
-function shuffle(array: any[]) {
+function shuffle(array) {
     for (let i = array.length - 1; i > 0; i--) {
         const randIndex = Math.floor(Math.random() * (i + 1));
         /* eslint-disable no-param-reassign */
@@ -19,13 +18,6 @@ function shuffle(array: any[]) {
 }
 
 export default class RoundRobin {
-    logger?: Logger;
-    stickyCount: number;
-    defaultPort?: number;
-    hostsList: { host: string; port?: number }[]
-    hostIndex: number;
-    pickCount: number;
-
     /**
      * @constructor
      * @param {object[]|string[]} hostsList - list of hosts to query
@@ -37,10 +29,7 @@ export default class RoundRobin {
      *   to send to the same host before switching to the next one
      * @param {Logger} [options.logger] - logger object
      */
-    constructor(
+    constructor(hostsList, options) {
-        hostsList: { host: string; port: number }[] | string[],
-        options?: { stickyCount?: number; logger?: Logger; defaultPort?: string },
-    ) {
         if (hostsList.length === 0) {
             throw new Error(
                 'at least one host must be provided for round robin');
@@ -55,12 +44,9 @@ export default class RoundRobin {
         }
         if (options && options.defaultPort) {
             this.defaultPort = Number.parseInt(options.defaultPort, 10);
-            if (isNaN(this.defaultPort)) {
-                this.defaultPort = undefined;
-            }
         }
 
-        this.hostsList = hostsList.map((item: any) => this._validateHostObj(item));
+        this.hostsList = hostsList.map(item => this._validateHostObj(item));
 
         // TODO: add blacklisting capability
 
@@ -69,8 +55,8 @@ export default class RoundRobin {
         this.pickCount = 0;
     }
 
-    _validateHostObj(hostItem: string | { host: string; port: string }): { host: string; port?: number } {
+    _validateHostObj(hostItem) {
-        const hostItemObj = { host: '', port: '' };
+        const hostItemObj = {};
 
         if (typeof hostItem === 'string') {
             const hostParts = hostItem.split(':');
@@ -120,7 +106,7 @@ export default class RoundRobin {
      * Once all hosts have been returned once, the list is shuffled
      * and a new round-robin cycle starts.
      *
-     * @return a host object with { host, port } attributes
+     * @return {object} a host object with { host, port } attributes
      */
     pickHost() {
         if (this.logger) {
@@ -145,7 +131,7 @@ export default class RoundRobin {
      * Once all hosts have been returned once, the list is shuffled
      * and a new round-robin cycle starts.
      *
-     * @return a host object with { host, port } attributes
+     * @return {object} a host object with { host, port } attributes
      */
     pickNextHost() {
         // don't shuffle in this case because we want to force picking
@@ -159,13 +145,13 @@ export default class RoundRobin {
      * return the current host in round-robin, without changing the
      * round-robin state
      *
-     * @return a host object with { host, port } attributes
+     * @return {object} a host object with { host, port } attributes
      */
     getCurrentHost() {
         return this.hostsList[this.hostIndex];
     }
 
-    _roundRobinCurrentHost(params: { shuffle?: boolean }) {
+    _roundRobinCurrentHost(params) {
         this.hostIndex += 1;
         if (this.hostIndex === this.hostsList.length) {
             this.hostIndex = 0;

lib/network/http/server.ts

@@ -1,46 +1,20 @@
 import * as http from 'http';
 import * as https from 'https';
-import { https as HttpsAgent } from 'httpagent';
-import * as tls from 'tls';
-import * as net from 'net';
 import assert from 'assert';
 import { dhparam } from '../../https/dh2048';
 import { ciphers } from '../../https/ciphers';
 import errors from '../../errors';
 import { checkSupportIPv6 } from './utils';
-import { Logger } from 'werelogs';
+
 
 export default class Server {
-    _noDelay: boolean;
-    _cbOnListening: () => void;
-    _cbOnRequest: (req: http.IncomingMessage, res: http.ServerResponse) => void;
-    _cbOnCheckContinue: (req: http.IncomingMessage, res: http.ServerResponse) => void;
-    _cbOnCheckExpectation: (req: http.IncomingMessage, res: http.ServerResponse) => void;
-    _cbOnError: (err: Error) => boolean;
-    _cbOnStop: () => void;
-    _https: {
-        agent?: https.Agent;
-        ciphers: string;
-        dhparam: string;
-        cert?: string;
-        key?: string;
-        ca?: string[];
-        requestCert: boolean;
-        rejectUnauthorized: boolean;
-    };
-    _port: number;
-    _address: string;
-    _server: http.Server | https.Server | null;
-    _logger: Logger;
-    _keepAliveTimeout: number | null;
-
     /**
      * @constructor
      *
-     * @param port - Port to listen into
+     * @param {number} port - Port to listen into
-     * @param logger - Logger object
+     * @param {werelogs.Logger} logger - Logger object
      */
-    constructor(port: number, logger: Logger) {
+    constructor(port, logger) {
         assert.strictEqual(typeof port, 'number', 'Port must be a number');
         this._noDelay = true;
         this._cbOnListening = () => {};
@@ -57,6 +31,9 @@ export default class Server {
         this._https = {
             ciphers,
             dhparam,
+            cert: null,
+            key: null,
+            ca: null,
             requestCert: false,
             rejectUnauthorized: true,
         };
@@ -71,10 +48,10 @@ export default class Server {
      * Setter to noDelay, this disable the nagle tcp algorithm, reducing
      * latency for each request
      *
-     * @param value - { true: Disable, false: Enable }
+     * @param {boolean} value - { true: Disable, false: Enable }
-     * @return itself
+     * @return {Server} itself
      */
-    setNoDelay(value: boolean) {
+    setNoDelay(value) {
         this._noDelay = value;
         return this;
     }
@@ -84,10 +61,10 @@ export default class Server {
      * connections are automatically closed (default should be
      * 5 seconds in node.js)
      *
-     * @param keepAliveTimeout - keep-alive timeout in milliseconds
+     * @param {number} keepAliveTimeout - keep-alive timeout in milliseconds
-     * @return - returns this
+     * @return {Server} - returns this
      */
-    setKeepAliveTimeout(keepAliveTimeout: number) {
+    setKeepAliveTimeout(keepAliveTimeout) {
         this._keepAliveTimeout = keepAliveTimeout;
         return this;
     }
@@ -95,7 +72,7 @@ export default class Server {
     /**
      * Getter to access to the http/https server
      *
-     * @return http/https server
+     * @return {http.Server|https.Server} http/https server
      */
     getServer() {
         return this._server;
@@ -104,7 +81,7 @@ export default class Server {
     /**
      * Getter to access to the current authority certificate
      *
-     * @return Authority certificate
+     * @return {string} Authority certificate
      */
     getAuthorityCertificate() {
         return this._https.ca;
@@ -113,16 +90,17 @@ export default class Server {
     /**
      * Setter to the listening port
      *
-     * @param port - Port to listen into
+     * @param {number} port - Port to listen into
+     * @return {undefined}
      */
-    setPort(port: number) {
+    setPort(port) {
         this._port = port;
     }
 
     /**
      * Getter to access to the listening port
      *
-     * @return listening port
+     * @return {number} listening port
      */
     getPort() {
         return this._port;
@@ -131,16 +109,17 @@ export default class Server {
     /**
      * Setter to the bind address
      *
-     * @param address - address bound to the socket
+     * @param {String} address - address bound to the socket
+     * @return {undefined}
      */
-    setBindAddress(address: string) {
+    setBindAddress(address) {
         this._address = address;
     }
 
     /**
      * Getter to access the bind address
      *
-     * @return address bound to the socket
+     * @return {String} address bound to the socket
      */
     getBindAddress() {
         return this._address;
@@ -149,7 +128,7 @@ export default class Server {
     /**
      * Getter to access to the noDelay (nagle algorithm) configuration
      *
-     * @return - { true: Disable, false: Enable }
+     * @return {boolean} { true: Disable, false: Enable }
      */
     isNoDelay() {
         return this._noDelay;
@@ -158,7 +137,7 @@ export default class Server {
     /**
      * Getter to know if the server run under https or http
      *
-     * @return - { true: Https server, false: http server }
+     * @return {boolean} { true: Https server, false: http server }
      */
     isHttps() {
         return !!this._https.cert && !!this._https.key;
@@ -167,17 +146,20 @@ export default class Server {
     /**
      * Setter for the https configuration
      *
-     * @param [cert] - Content of the certificate
+     * @param {string} [cert] - Content of the certificate
-     * @param [key] - Content of the key
+     * @param {string} [key] - Content of the key
-     * @param [ca] - Content of the authority certificate
+     * @param {string} [ca] - Content of the authority certificate
-     * @param [twoWay] - Enable the two way exchange, which means
+     * @param {boolean} [twoWay] - Enable the two way exchange, which means
      *   each client needs to set up an ssl certificate
-     * @return itself
+     * @return {Server} itself
      */
-    setHttps(cert: string, key: string, ca: string, twoWay: boolean) {
+    setHttps(cert, key, ca, twoWay) {
         this._https = {
             ciphers,
             dhparam,
+            cert: null,
+            key: null,
+            ca: null,
             requestCert: false,
             rejectUnauthorized: true,
         };
@@ -201,10 +183,11 @@ export default class Server {
     /**
      * Function called when no handler specified in the server
      *
-     * @param _req - Request object
+     * @param {http.IncomingMessage|https.IncomingMessage} req - Request object
-     * @param res - Response object
+     * @param {http.ServerResponse} res - Response object
+     * @return {undefined}
      */
-    _noHandlerCb(_req: http.IncomingMessage, res: http.ServerResponse) {
+    _noHandlerCb(req, res) {
         // if no handler on the Server, send back an internal error
         const err = errors.InternalError;
         const msg = `${err.message}: No handler in Server`;
@@ -218,18 +201,23 @@ export default class Server {
     /**
      * Function called when request received
      *
-     * @param req - Request object
+     * @param {http.IncomingMessage} req - Request object
-     * @param res - Response object
+     * @param {http.ServerResponse} res - Response object
+     * @return {undefined}
      */
-    _onRequest(req: http.IncomingMessage, res: http.ServerResponse) {
+    _onRequest(req, res) {
         return this._cbOnRequest(req, res);
     }
 
-    /** Function called when the Server is listening */
+    /**
+     * Function called when the Server is listening
+     *
+     * @return {undefined}
+     */
     _onListening() {
         this._logger.info('Server is listening', {
             method: 'arsenal.network.Server._onListening',
-            address: this._server?.address(),
+            address: this._server.address(),
             serverIP: this._address,
             serverPort: this._port,
         });
@@ -239,10 +227,10 @@ export default class Server {
     /**
      * Function called when the Server sends back an error
      *
-     * @param err - Error to be sent back
+     * @param {Error} err - Error to be sent back
-     * @return
+     * @return {undefined}
      */
-    _onError(err: Error) {
+    _onError(err) {
         this._logger.error('Server error', {
             method: 'arsenal.network.Server._onError',
             port: this._port,
@@ -255,9 +243,13 @@ export default class Server {
         }
     }
 
-    /** Function called when the Server is stopped */
+    /**
+     * Function called when the Server is stopped
+     *
+     * @return {undefined}
+     */
     _onClose() {
-        if (this._server?.listening) {
+        if (this._server.listening) {
             this._logger.info('Server is stopped', {
                 address: this._server.address(),
             });
@@ -269,10 +261,10 @@ export default class Server {
     /**
      * Set the listening callback
      *
-     * @param cb - Callback()
+     * @param {function} cb - Callback()
-     * @return itself
+     * @return {Server} itself
      */
-    onListening(cb: () => void) {
+    onListening(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnListening = cb;
@@ -282,10 +274,10 @@ export default class Server {
     /**
      * Set the request handler callback
      *
-     * @param cb - Callback(req, res)
+     * @param {function} cb - Callback(req, res)
-     * @return itself
+     * @return {Server} itself
      */
-    onRequest(cb: (req: http.IncomingMessage, res: http.ServerResponse) => void) {
+    onRequest(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnRequest = cb;
@@ -295,10 +287,10 @@ export default class Server {
     /**
      * Set the checkExpectation handler callback
      *
-     * @param cb - Callback(req, res)
+     * @param {function} cb - Callback(req, res)
-     * @return itself
+     * @return {Server} itself
      */
-    onCheckExpectation(cb: (req: http.IncomingMessage, res: http.ServerResponse) => void) {
+    onCheckExpectation(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnCheckExpectation = cb;
@@ -308,10 +300,10 @@ export default class Server {
     /**
      * Set the checkContinue handler callback
      *
-     * @param cb - Callback(req, res)
+     * @param {function} cb - Callback(req, res)
-     * @return itself
+     * @return {Server} itself
      */
-    onCheckContinue(cb: (req: http.IncomingMessage, res: http.ServerResponse) => void) {
+    onCheckContinue(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnCheckContinue = cb;
@@ -322,10 +314,10 @@ export default class Server {
      * Set the error handler callback, if this handler returns true when an
      * error is triggered, the server will restart
      *
-     * @param cb - Callback(err)
+     * @param {function} cb - Callback(err)
-     * @return itself
+     * @return {Server} itself
      */
-    onError(cb: (err: Error) => boolean) {
+    onError(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnError = cb;
@@ -335,10 +327,10 @@ export default class Server {
     /**
      * Set the stop handler callback
      *
-     * @param cb - Callback()
+     * @param {function} cb - Callback()
-     * @return itself
+     * @return {Server} itself
      */
-    onStop(cb: () => void) {
+    onStop(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnStop = cb;
@@ -348,9 +340,10 @@ export default class Server {
     /**
      * Function called when a secure connection is etablished
      *
-     * @param sock - socket
+     * @param {tls.TlsSocket} sock - socket
+     * @return {undefined}
      */
-    _onSecureConnection(sock: tls.TLSSocket) {
+    _onSecureConnection(sock) {
         if (this._https.requestCert && !sock.authorized) {
             this._logger.error('rejected secure connection', {
                 address: sock.address(),
@@ -363,10 +356,11 @@ export default class Server {
     /**
      * function called when an error came from the client request
      *
-     * @param err - Error
+     * @param {Error} err - Error
-     * @param sock - Socket
+     * @param {net.Socket|tls.TlsSocket} sock - Socket
+     * @return {undefined}
      */
-    _onClientError(err: Error, sock: net.Socket | tls.TLSSocket) {
+    _onClientError(err, sock) {
         this._logger.error('client error', {
             method: 'arsenal.network.Server._onClientError',
             error: err.stack || err,
@@ -380,10 +374,11 @@ export default class Server {
      * Function called when request with an HTTP Expect header is received,
      * where the value is not 100-continue
      *
-     * @param req - Request object
+     * @param {http.IncomingMessage|https.IncomingMessage} req - Request object
-     * @param res - Response object
+     * @param {http.ServerResponse} res - Response object
+     * @return {undefined}
      */
-    _onCheckExpectation(req: http.IncomingMessage, res: http.ServerResponse) {
+    _onCheckExpectation(req, res) {
         return this._cbOnCheckExpectation(req, res);
     }
 
@@ -391,17 +386,18 @@ export default class Server {
      * Function called when request with an HTTP Expect: 100-continue
      * is received
      *
-     * @param req - Request object
+     * @param {http.IncomingMessage|https.IncomingMessage} req - Request object
-     * @param res - Response object
+     * @param {http.ServerResponse} res - Response object
+     * @return {undefined}
      */
-    _onCheckContinue(req: http.IncomingMessage, res: http.ServerResponse) {
+    _onCheckContinue(req, res) {
         return this._cbOnCheckContinue(req, res);
     }
 
     /**
      * Function to start the Server
      *
-     * @return itself
+     * @return {Server} itself
      */
     start() {
         if (!this._server) {
@@ -410,11 +406,7 @@ export default class Server {
                     method: 'arsenal.network.Server.start',
                     port: this._port,
                 });
-                this._https.agent = new HttpsAgent.Agent(this._https, {
+                this._https.agent = new https.Agent(this._https);
-                    // Do not enforce the maximum number of sockets for the
-                    // main server, as it might be able to serve more clients.
-                    maxSockets: false,
-                });
                 this._server = https.createServer(this._https,
                     (req, res) => this._onRequest(req, res));
             } else {
@@ -434,7 +426,6 @@ export default class Server {
                 sock => this._onSecureConnection(sock));
             this._server.on('connection', sock => {
                 // Setting no delay of the socket to the value configured
-                // TODO fix this
                 sock.setNoDelay(this.isNoDelay());
                 sock.on('error', err => this._logger.info(
                     'socket error - request rejected', { error: err }));
@@ -442,7 +433,6 @@ export default class Server {
             this._server.on('tlsClientError', (err, sock) =>
                 this._onClientError(err, sock));
             this._server.on('clientError', (err, sock) =>
-                // @ts-expect-errors
                 this._onClientError(err, sock));
             this._server.on('checkContinue', (req, res) =>
                 this._onCheckContinue(req, res));
@@ -457,7 +447,7 @@ export default class Server {
     /**
      * Function to stop the Server
      *
-     * @return itself
+     * @return {Server} itself
      */
     stop() {
         if (this._server) {

lib/network/http/utils.ts

@@ -1,12 +1,12 @@
 import * as os from 'os';
-import errors, { ArsenalError } from '../../errors';
+import errors from '../../errors';
 
 /**
  * Parse the Range header into an object
  *
- * @param rangeHeader - The 'Range' header value
+ * @param {String} rangeHeader - The 'Range' header value
 
- * @return object containing a range specification, with
+ * @return {Object} object containing a range specification, with
  * either of:
  * - start and end attributes: a fully specified range request
  * - a single start attribute: no end is specified in the range request
@@ -14,12 +14,7 @@ import errors, { ArsenalError } from '../../errors';
  * - an error attribute of type errors.InvalidArgument if the range
  *     syntax is invalid
  */
-export function parseRangeSpec(
+export function parseRangeSpec(rangeHeader) {
-    rangeHeader: string
-):
-    | { error: ArsenalError }
-    | { suffix: number }
-    | { start: number; end?: number } {
     const rangeMatch = /^bytes=([0-9]+)?-([0-9]+)?$/.exec(rangeHeader);
     if (rangeMatch) {
         const rangeValues = rangeMatch.slice(1, 3);
@@ -28,8 +23,7 @@ export function parseRangeSpec(
                 return { suffix: Number.parseInt(rangeValues[1], 10) };
             }
         } else {
-            const rangeSpec: { start: number; end?: number } =
+            const rangeSpec = { start: Number.parseInt(rangeValues[0], 10) };
-                { start: Number.parseInt(rangeValues[0], 10) };
             if (rangeValues[1] === undefined) {
                 return rangeSpec;
             }
@@ -46,11 +40,11 @@ export function parseRangeSpec(
  * Convert a range specification as given by parseRangeSpec() into a
  * fully specified absolute byte range
  *
- * @param rangeSpec - Parsed range specification as returned
+ * @param {Number []} rangeSpec - Parsed range specification as returned
  *   by parseRangeSpec()
- * @param objectSize - Total byte size of the whole object
+ * @param {Number} objectSize - Total byte size of the whole object
 
- * @return object containing either:
+ * @return {Object} object containing either:
  * - a 'range' attribute which is a fully specified byte range [start,
        end], as the inclusive absolute byte range to request from the
        object
@@ -59,11 +53,8 @@ export function parseRangeSpec(
  * - or an 'error' attribute of type errors.InvalidRange if the
  *     requested range is out of object's boundaries.
  */
-export function getByteRangeFromSpec(
+export function getByteRangeFromSpec(rangeSpec, objectSize) {
-    rangeSpec: { suffix: number } | { start: number; end?: number },
+    if (rangeSpec.suffix !== undefined) {
-    objectSize: number
-): { error: ArsenalError } | { range: [number, number] } | {} {
-    if ('suffix' in rangeSpec) {
         if (rangeSpec.suffix === 0) {
             // 0-byte suffix is always invalid (even on empty objects)
             return { error: errors.InvalidRange };
@@ -77,11 +68,10 @@ export function getByteRangeFromSpec(
             objectSize - 1] };
     }
     if (rangeSpec.start < objectSize) {
-        // test is false if end is undefined or end is greater than objectSize
+        // test is false if end is undefined
-        const end: number = rangeSpec.end !== undefined && rangeSpec.end < objectSize
+        return { range: [rangeSpec.start,
-            ? rangeSpec.end
+            (rangeSpec.end < objectSize ?
-            : objectSize - 1;
+                rangeSpec.end : objectSize - 1)] };
-        return { range: [rangeSpec.start, end] };
     }
     return { error: errors.InvalidRange };
 }
@@ -90,10 +80,10 @@ export function getByteRangeFromSpec(
  * Convenience function that combines parseRangeSpec() and
  * getByteRangeFromSpec()
  *
- * @param rangeHeader - The 'Range' header value
+ * @param {String} rangeHeader - The 'Range' header value
- * @param objectSize - Total byte size of the whole object
+ * @param {Number} objectSize - Total byte size of the whole object
 
- * @return object containing either:
+ * @return {Object} object containing either:
  * - a 'range' attribute which is a fully specified byte range [start,
  *     end], as the inclusive absolute byte range to request from the
  *     object
@@ -103,12 +93,9 @@ export function getByteRangeFromSpec(
  * - or an 'error' attribute instead of type errors.InvalidRange if
  *     the requested range is out of object's boundaries.
  */
- export function parseRange(
+export function parseRange(rangeHeader, objectSize) {
-     rangeHeader: string,
-     objectSize: number
- ): { range: [number, number] } | {} | { error: ArsenalError } {
     const rangeSpec = parseRangeSpec(rangeHeader);
-    if ('error' in rangeSpec) {
+    if (rangeSpec.error) {
         // invalid range syntax is silently ignored in HTTP spec,
         // hence returns the whole object
         return {};
@@ -118,6 +105,6 @@ export function getByteRangeFromSpec(
 
 export function checkSupportIPv6() {
     const niList = os.networkInterfaces();
-    return Object.keys(niList).some((network) =>
+    return Object.keys(niList).some(network =>
-        niList[network]?.some(intfc => intfc.family === 'IPv6'));
+        niList[network].some(intfc => intfc.family === 'IPv6'));
 }

lib/network/index.ts

@@ -1,17 +1,15 @@
 import server from './http/server';
-import * as utils from './http/utils';
+export * as rpc from './rpc/rpc';
+export * as level from './rpc/level-net';
 import RESTServer from './rest/RESTServer';
 import RESTClient from './rest/RESTClient';
+export { default as RoundRobin } from './RoundRobin';
 import * as ProbeServer from './probe/ProbeServer';
 import HealthProbeServer from './probe/HealthProbeServer';
 import * as Utils from './probe/Utils';
+export * as kmip from './kmip';
+export { default as kmipClient } from './kmip/Client';
 
-export const http = { server, utils };
+export const http = { server };
 export const rest = { RESTServer, RESTClient };
 export const probe = { ProbeServer, HealthProbeServer, Utils };
-
-export { default as RoundRobin } from './RoundRobin';
-export { default as kmip } from './kmip';
-export { default as kmipClient } from './kmip/Client';
-export * as rpc from './rpc/rpc';
-export * as level from './rpc/level-net';

lib/network/kmip/Client.ts

@@ -1,12 +1,8 @@
-'use strict'; // eslint-disable-line
-/* eslint new-cap: "off" */
-
 import async from 'async';
 import errors from '../../errors';
 import TTLVCodec from './codec/ttlv';
 import TlsTransport from './transport/tls';
 import KMIP from '.';
-import * as werelogs from 'werelogs';
 
 const CRYPTOGRAPHIC_OBJECT_TYPE = 'Symmetric Key';
 const CRYPTOGRAPHIC_ALGORITHM = 'AES';
@@ -47,10 +43,10 @@ const searchFilter = {
 
 /**
  * Normalize errors according to arsenal definitions
- * @param err - an Error instance or a message string
+ * @param {string | Error} err - an Error instance or a message string
- * @returns - arsenal error
+ * @returns {arsenal.errors} - arsenal error
  */
-function _arsenalError(err: string | Error) {
+function _arsenalError(err) {
     const messagePrefix = 'KMIP:';
     if (typeof err === 'string') {
         return errors.InternalError
@@ -59,7 +55,6 @@ function _arsenalError(err: string | Error) {
         err instanceof Error ||
         // INFO: The second part is here only for Jest, to remove when we'll be
         //   fully migrated to TS
-        // @ts-expect-error
         (err && typeof err.message === 'string')
     ) {
         return errors.InternalError
@@ -73,11 +68,12 @@ function _arsenalError(err: string | Error) {
 /**
  * Negotiate with the server the use of a recent version of the protocol and
  * update the low level driver with this new knowledge.
- * @param client - The Client instance
+ * @param {Object} client - The Client instance
- * @param logger - Werelog logger object
+ * @param {Object} logger - Werelog logger object
- * @param cb - The callback triggered after the negotiation.
+ * @param {Function} cb - The callback triggered after the negotiation.
+ * @returns {undefined}
  */
-function _negotiateProtocolVersion(client: any, logger: werelogs.Logger, cb: any) {
+function _negotiateProtocolVersion(client, logger, cb) {
     return client.kmip.request(logger, 'Discover Versions', [
         KMIP.Structure('Protocol Version', [
             KMIP.Integer('Protocol Version Major', 1),
@@ -119,11 +115,12 @@ function _negotiateProtocolVersion(client: any, logger: werelogs.Logger, cb: any
 /**
  * Obtain from the server the various extensions defined by the vendor
  * and update the low level driver with this new knowledge.
- * @param client - The Client instance
+ * @param {Object} client - The Client instance
- * @param logger - Werelog logger object
+ * @param {Object} logger - Werelog logger object
- * @param cb - The callback triggered after the extension mapping
+ * @param {Function} cb - The callback triggered after the extension mapping
+ * @returns {undefined}
  */
-function _mapExtensions(client: any, logger: werelogs.Logger, cb: any) {
+function _mapExtensions(client, logger, cb) {
     return client.kmip.request(logger, 'Query', [
         KMIP.Enumeration('Query Function', 'Query Extension Map'),
     ], (err, response) => {
@@ -152,11 +149,12 @@ function _mapExtensions(client: any, logger: werelogs.Logger, cb: any) {
 
 /**
  * Query the Server information and identify its vendor
- * @param client - The Client instance
+ * @param {Object} client - The Client instance
- * @param logger - Werelog logger object
+ * @param {Object} logger - Werelog logger object
- * @param cb - The callback triggered after the information discovery
+ * @param {Function} cb - The callback triggered after the information discovery
+ * @returns {undefined}
  */
-function _queryServerInformation(client: any, logger: werelogs.Logger, cb: any) {
+function _queryServerInformation(client, logger, cb) {
     client.kmip.request(logger, 'Query', [
         KMIP.Enumeration('Query Function', 'Query Server Information'),
     ], (err, response) => {
@@ -186,11 +184,12 @@ function _queryServerInformation(client: any, logger: werelogs.Logger, cb: any)
  * is not a show stopper because some vendor support more or less what they
  * announce. If a subsequent request fails, this information can be used to
  * figure out the reason for the failure.
- * @param client - The Client instance
+ * @param {Object} client - The Client instance
- * @param logger - Werelog logger object
+ * @param {Object} logger - Werelog logger object
- * @param cb - The callback triggered after the information discovery
+ * @param {Function} cb - The callback triggered after the information discovery
+ * @returns {undefined}
  */
-function _queryOperationsAndObjects(client: any, logger: werelogs.Logger, cb: any) {
+function _queryOperationsAndObjects(client, logger, cb) {
     return client.kmip.request(logger, 'Query', [
         KMIP.Enumeration('Query Function', 'Query Operations'),
         KMIP.Enumeration('Query Function', 'Query Objects'),
@@ -238,48 +237,29 @@ function _queryOperationsAndObjects(client: any, logger: werelogs.Logger, cb: an
     });
 }
 
-
 export default class Client {
-    options: any;
-    vendorIdentification: string;
-    serverInformation: any[];
-    kmip: KMIP;
-
     /**
      * Construct a high level KMIP driver suitable for cloudserver
-     * @param options - Instance options
+     * @param {Object} options - Instance options
-     * @param options.kmip - Low level driver options
+     * @param {Object} options.kmip - Low level driver options
-     * @param options.kmip.client - This high level driver options
+     * @param {Object} options.kmip.client - This high level driver options
-     * @param options.kmip.client.compoundCreateActivate -
+     * @param {Object} options.kmip.client.compoundCreateActivate -
      *                 Depends on the server's ability. False offers the best
      *                 compatibility. True does not offer a significant
      *                 performance gain, but can be useful in case of unreliable
      *                 time synchronization between the client and the server.
-     * @param options.kmip.client.bucketNameAttributeName -
+     * @param {Object} options.kmip.client.bucketNameAttributeName -
      *                 Depends on the server's ability. Not specifying this
      *                 offers the best compatibility and disable the attachement
      *                 of the bucket name as a key attribute.
-     * @param options.kmip.codec - KMIP Codec options
+     * @param {Object} options.kmip.codec - KMIP Codec options
-     * @param options.kmip.transport - KMIP Transport options
+     * @param {Object} options.kmip.transport - KMIP Transport options
-     * @param CodecClass - diversion for the Codec class,
+     * @param {Class} CodecClass - diversion for the Codec class,
      *                             defaults to TTLVCodec
-     * @param TransportClass - diversion for the Transport class,
+     * @param {Class} TransportClass - diversion for the Transport class,
      *                                 defaults to TlsTransport
      */
-    constructor(
+    constructor(options, CodecClass, TransportClass) {
-        options: {
-            kmip: {
-                codec: any;
-                transport: any;
-                client: {
-                    compoundCreateActivate: any;
-                    bucketNameAttributeName: any;
-                };
-            }
-        },
-        CodecClass: any,
-        TransportClass: any,
-    ) {
         this.options = options.kmip.client || {};
         this.vendorIdentification = '';
         this.serverInformation = [];
@@ -293,27 +273,30 @@ export default class Client {
 
     /**
      * Update this client with the vendor identification of the server
-     * @param vendorIdentification - Vendor identification string
+     * @param {String} vendorIdentification - Vendor identification string
+     * @returns {undefined}
      */
-    _setVendorIdentification(vendorIdentification: string) {
+    _setVendorIdentification(vendorIdentification) {
         this.vendorIdentification = vendorIdentification;
     }
 
     /**
      * Update this client with the information about the server
-     * @param serverInformation - Server information object
+     * @param {Object} serverInformation - Server information object
+     * @returns {undefined}
      */
-    _setServerInformation(serverInformation: any) {
+    _setServerInformation(serverInformation) {
         this.serverInformation = serverInformation;
     }
 
     /**
      * Perform the KMIP level handshake with the server
-     * @param logger - Werelog logger object
+     * @param {Object} logger - Werelog logger object
-     * @param cb - Callback to be triggered at the end of the
+     * @param {Function} cb - Callback to be triggered at the end of the
      *                        handshake. cb(err: Error)
+     * @returns {undefined}
      */
-    _kmipHandshake(logger: werelogs.Logger, cb: any) {
+    _kmipHandshake(logger, cb) {
         return async.waterfall([
             next => _negotiateProtocolVersion(this, logger, next),
             next => _mapExtensions(this, logger, next),
@@ -327,11 +310,12 @@ export default class Client {
      * Activate a cryptographic key managed by the server,
      * for a specific bucket. This is a required action to perform after
      * the key creation.
-     * @param keyIdentifier - The bucket key Id
+     * @param {string} keyIdentifier - The bucket key Id
-     * @param logger - Werelog logger object
+     * @param {object} logger - Werelog logger object
-     * @param cb - The callback(err: Error)
+     * @param {function} cb - The callback(err: Error)
+     * @returns {undefined}
      */
-    _activateBucketKey(keyIdentifier: string, logger: werelogs.Logger, cb: any) {
+    _activateBucketKey(keyIdentifier, logger, cb) {
         return this.kmip.request(logger, 'Activate', [
             KMIP.TextString('Unique Identifier', keyIdentifier),
         ], (err, response) => {
@@ -358,12 +342,13 @@ export default class Client {
     /**
      * Create a new cryptographic key managed by the server,
      * for a specific bucket
-     * @param bucketName - The bucket name
+     * @param {string} bucketName - The bucket name
-     * @param logger - Werelog logger object
+     * @param {object} logger - Werelog logger object
-     * @param cb - The callback(err: Error, bucketKeyId: String)
+     * @param {function} cb - The callback(err: Error, bucketKeyId: String)
+     * @returns {undefined}
      */
-    createBucketKey(bucketName: string, logger: werelogs.Logger, cb: any) {
+    createBucketKey(bucketName, logger, cb) {
-        const attributes: any = [];
+        const attributes = [];
         if (!!this.options.bucketNameAttributeName) {
             attributes.push(KMIP.Attribute('TextString',
                 this.options.bucketNameAttributeName,
@@ -379,8 +364,6 @@ export default class Client {
                     CRYPTOGRAPHIC_USAGE_MASK))]);
         if (this.options.compoundCreateActivate) {
             attributes.push(KMIP.Attribute('Date-Time', 'Activation Date',
-                // TODO What's happening here? That can not work.
-                // @ts-expect-error
                 new Date(Date.UTC())));
         }
 
@@ -417,11 +400,12 @@ export default class Client {
      * Revoke a cryptographic key managed by the server, for a specific bucket.
      * This is a required action to perform before being able to destroy the
      * managed key.
-     * @param bucketKeyId - The bucket key Id
+     * @param {string} bucketKeyId - The bucket key Id
-     * @param logger - Werelog logger object
+     * @param {object} logger - Werelog logger object
-     * @param cb - The callback(err: Error)
+     * @param {function} cb - The callback(err: Error)
+     * @returns {undefined}
      */
-    _revokeBucketKey(bucketKeyId: string, logger: werelogs.Logger, cb: any) {
+    _revokeBucketKey(bucketKeyId, logger, cb) {
         // maybe revoke first
         return this.kmip.request(logger, 'Revoke', [
             KMIP.TextString('Unique Identifier', bucketKeyId),
@@ -454,11 +438,12 @@ export default class Client {
 
     /**
      * Destroy a cryptographic key managed by the server, for a specific bucket.
-     * @param bucketKeyId - The bucket key Id
+     * @param {string} bucketKeyId - The bucket key Id
-     * @param logger - Werelog logger object
+     * @param {object} logger - Werelog logger object
-     * @param cb - The callback(err: Error)
+     * @param {function} cb - The callback(err: Error)
+     * @returns {undefined}
      */
-    destroyBucketKey(bucketKeyId: string, logger: werelogs.Logger, cb: any) {
+    destroyBucketKey(bucketKeyId, logger, cb) {
         return this._revokeBucketKey(bucketKeyId, logger, err => {
             if (err) {
                 const error = _arsenalError(err);
@@ -493,20 +478,19 @@ export default class Client {
 
     /**
      *
-     * @param cryptoScheme - crypto scheme version number
+     * @param {number} cryptoScheme - crypto scheme version number
-     * @param masterKeyId - key to retrieve master key
+     * @param {string} masterKeyId - key to retrieve master key
-     * @param plainTextDataKey - data key
+     * @param {buffer} plainTextDataKey - data key
-     * @param logger - werelog logger object
+     * @param {object} logger - werelog logger object
-     * @param cb - callback
+     * @param {function} cb - callback
+     * @returns {undefined}
      * @callback called with (err, cipheredDataKey: Buffer)
      */
-    cipherDataKey(
+    cipherDataKey(cryptoScheme,
-        cryptoScheme: number,
+        masterKeyId,
-        masterKeyId: string,
+        plainTextDataKey,
-        plainTextDataKey: Buffer,
+        logger,
-        logger: werelogs.Logger,
+        cb) {
-        cb: any,
-    ) {
         return this.kmip.request(logger, 'Encrypt', [
             KMIP.TextString('Unique Identifier', masterKeyId),
             KMIP.Structure('Cryptographic Parameters', [
@@ -543,20 +527,19 @@ export default class Client {
 
     /**
      *
-     * @param cryptoScheme - crypto scheme version number
+     * @param {number} cryptoScheme - crypto scheme version number
-     * @param masterKeyId - key to retrieve master key
+     * @param {string} masterKeyId - key to retrieve master key
-     * @param cipheredDataKey - data key
+     * @param {buffer} cipheredDataKey - data key
-     * @param logger - werelog logger object
+     * @param {object} logger - werelog logger object
-     * @param cb - callback
+     * @param {function} cb - callback
+     * @returns {undefined}
      * @callback called with (err, plainTextDataKey: Buffer)
      */
-    decipherDataKey(
+    decipherDataKey(cryptoScheme,
-        cryptoScheme: number,
+        masterKeyId,
-        masterKeyId: string,
+        cipheredDataKey,
-        cipheredDataKey: Buffer,
+        logger,
-        logger: werelogs.Logger,
+        cb) {
-        cb: any,
-    ) {
         return this.kmip.request(logger, 'Decrypt', [
             KMIP.TextString('Unique Identifier', masterKeyId),
             KMIP.Structure('Cryptographic Parameters', [

lib/network/kmip/Message.ts

@@ -1,10 +1,11 @@
 import assert from 'assert';
 
-function _lookup(decodedTTLV: any[], path: string) {
+
+function _lookup(decodedTTLV, path) {
     const xpath = path.split('/').filter(word => word.length > 0);
     const canonicalPath = xpath.join('/');
     const obj = decodedTTLV;
-    let res: any[] = [];
+    let res = [];
     assert(Array.isArray(obj));
     for (let current = xpath.shift(); current; current = xpath.shift()) {
         for (let i = 0; i < obj.length; ++i) {
@@ -29,23 +30,21 @@ function _lookup(decodedTTLV: any[], path: string) {
 }
 
 export default class Message {
-    content: any[];
-
     /**
      * Construct a new abstract Message
-     * @param content - the content  of the message
+     * @param {Object} content - the content  of the message
      */
-    constructor(content: any[]) {
+    constructor(content) {
         this.content = content;
     }
 
     /**
      * Lookup the values corresponding to the provided path
-     * @param path - the path in the hierarchy of the values
+     * @param {String} path - the path in the hierarchy of the values
      *                        of interest
-     * @return - an array of the values matching the provided path
+     * @return {Object} - an array of the values matching the provided path
      */
-    lookup(path: string) {
+    lookup(path) {
         return _lookup(this.content, path);
     }
 }

lib/network/kmip/codec/ttlv.ts

@@ -1,11 +1,9 @@
-/* eslint dot-notation: "off" */
 import KMIPTags from '../tags.json';
 import KMIPMessage from '../Message';
-import * as werelogs from 'werelogs';
 
 const UINT32_MAX = Math.pow(2, 32);
 
-function _ttlvPadVector(vec: any[]) {
+function _ttlvPadVector(vec) {
     let length = 0;
     vec.forEach(buf => {
         if (!(buf instanceof Buffer)) {
@@ -20,14 +18,13 @@ function _ttlvPadVector(vec: any[]) {
     return vec;
 }
 
-function _throwError(logger: werelogs.Logger, msg: string, data?: LogDictionary) {
+function _throwError(logger, msg, data) {
     logger.error(msg, data);
     throw Error(msg);
 }
 
 export default function TTLVCodec() {
     if (!new.target) {
-        // @ts-ignore
         return new TTLVCodec();
     }
 
@@ -44,7 +41,7 @@ export default function TTLVCodec() {
                 const funcName = 'Structure::decode';
                 const length = value.length;
                 let i = 0;
-                const result: any[] = [];
+                const result = [];
                 let diversion = null;
                 while (i < length) {
                     const element = {};
@@ -52,7 +49,7 @@ export default function TTLVCodec() {
                     const elementType =
                           value.slice(i + 3, i + 4).toString('hex');
                     const elementLength = value.readUInt32BE(i + 4);
-                    const property: any = {};
+                    const property = {};
                     if (!TypeDecoder[elementType]) {
                         _throwError(logger,
                             'Unknown element type',
@@ -99,7 +96,7 @@ export default function TTLVCodec() {
                 const type = Buffer.from(TypeEncoder['Structure'].value, 'hex');
                 const length = Buffer.alloc(4);
                 let vectorLength = 0;
-                let encodedValue: any[] = [];
+                let encodedValue = [];
                 value.forEach(item => {
                     Object.keys(item).forEach(key => {
                         const itemTagName = key;
@@ -112,7 +109,7 @@ export default function TTLVCodec() {
                         if (!TypeEncoder[itemType]) {
                             throw Error(`Unknown Type '${itemType}'`);
                         }
-                        const itemResult: any[] =
+                        const itemResult =
                               TypeEncoder[itemType].encode(itemTagName,
                                   itemValue,
                                   itemDiversion);
@@ -344,7 +341,7 @@ export default function TTLVCodec() {
 
     /* Construct TagDecoder */
     Object.keys(TagDecoder).forEach(key => {
-        const element: any = {};
+        const element = {};
         element.value = key;
         if (TagDecoder[key]['enumeration']) {
             const enumeration = {};
@@ -369,7 +366,7 @@ export default function TTLVCodec() {
 
 
     /* Public Methods Definition */
-    // @ts-ignore
+
     this.encodeMask = (tagName, value) => {
         let mask = 0;
         value.forEach(item => {
@@ -382,10 +379,9 @@ export default function TTLVCodec() {
         return mask;
     };
 
-    // @ts-ignore
     this.decodeMask = (tagName, givenMask) => {
         let mask = givenMask;
-        const value: any[] = [];
+        const value = [];
         const tag = TagEncoder[tagName].value;
         Object.keys(TagDecoder[tag].enumeration).forEach(key => {
             const bit = Buffer.from(key, 'hex').readUInt32BE(0);
@@ -397,17 +393,15 @@ export default function TTLVCodec() {
         return value;
     };
 
-    // @ts-ignore
     this.decode = (logger, rawMessage) => {
         const messageContent =
               TypeDecoder['01'].decode(logger, null, rawMessage);
         return new KMIPMessage(messageContent);
     };
 
-    // @ts-ignore
     this.encode = message => {
         const value = message.content;
-        let result: any[] = [];
+        let result = [];
         value.forEach(item => {
             Object.keys(item).forEach(key => {
                 if (!TagEncoder[key]) {
@@ -426,13 +420,10 @@ export default function TTLVCodec() {
         return Buffer.concat(_ttlvPadVector(result));
     };
 
-    // @ts-ignore
     this.mapExtension = (tagName, tagValue) => {
         const tagValueStr = tagValue.toString(16);
         TagDecoder[tagValueStr] = { name: tagName };
         TagEncoder[tagName] = { value: tagValueStr };
     };
-
-    // @ts-ignore
     return this;
 }

lib/network/kmip/index.ts

@@ -1,13 +1,6 @@
-import uuid from 'uuid/v4';
+import uuidv4 from 'uuid/v4';
-import Message from './Message';
-import * as werelogs from 'werelogs';
 
-type UUIDOptions = { random?: number[]; rng?: () => number[]; } | null;
+import Message from './Message';
-function uuidv4(options: UUIDOptions, buffer: Buffer, offset?: number): Buffer;
-function uuidv4(options?: UUIDOptions): string;
-function uuidv4(options?: any, buffer?: any, offset?: any) {
-    return uuid(options, buffer, offset);
-}
 
 /* This client requires at least a KMIP 1.2 compatible server */
 const DEFAULT_PROTOCOL_VERSION_MAJOR = 1;
@@ -22,28 +15,19 @@ function _uniqueBatchItemID() {
 }
 
 
-function _PrimitiveType(tagName: string, type: string, value: any) {
+function _PrimitiveType(tagName, type, value) {
     return { [tagName]: { type, value } };
 }
 
-export type Options = { codec: any; transport: any; };
 export default class KMIP {
-    protocolVersion: {
-        major: number;
-        minor: number;
-    };
-    maximumResponseSize: number;
-    options: Options;
-    codec: any;
-    transport: any;
-
     /**
      * Construct a new KMIP Object
      * @param {Class} Codec -
      * @param {Class} Transport -
      * @param {Object} options -
+     * @param {Function} cb -
      */
-    constructor(Codec: any, Transport: any, options: { kmip: Options }) {
+    constructor(Codec, Transport, options) {
         this.protocolVersion = {
             major: DEFAULT_PROTOCOL_VERSION_MAJOR,
             minor: DEFAULT_PROTOCOL_VERSION_MINOR,
@@ -58,51 +42,51 @@ export default class KMIP {
 
     /**
      * create a new abstract message instance
-     * @param content - Most likely a call to KMIP.Structure
+     * @param {Object} content - Most likely a call to KMIP.Structure
      *                           with 'Request Message' as tagName
-     * @returns an instance of Message
+     * @returns {Object} an instance of Message
      */
-    static Message(content: any) {
+    static Message(content) {
         return new Message(content);
     }
 
     /**
      * Create a KMIP Structure field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - array of KMIP fields
+     * @param {Array} value - array of KMIP fields
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static Structure(tagName: string, value: any[]) {
+    static Structure(tagName, value) {
         return _PrimitiveType(tagName, 'Structure', value);
     }
 
     /**
      * Create a KMIP Integer field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - a number
+     * @param {Number} value - a number
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static Integer(tagName: string, value: number) {
+    static Integer(tagName, value) {
         return _PrimitiveType(tagName, 'Integer', value);
     }
 
     /**
      * Create a KMIP Long Integer field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - a number (beware of the 53-bit limitation)
+     * @param {Number} value - a number (beware of the 53-bit limitation)
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static LongInteger(tagName: string, value: number) {
+    static LongInteger(tagName, value) {
         return _PrimitiveType(tagName, 'LongInteger', value);
     }
 
     /**
      * Create a KMIP Big Integer field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - buffer containing the big integer
+     * @param {Buffer} value - buffer containing the big integer
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static BigInteger(tagName: string, value: Buffer) {
+    static BigInteger(tagName, value) {
         if (value.length % 8 !== 0) {
             throw Error('Big Integer value length must be a multiple of 8');
         }
@@ -111,74 +95,74 @@ export default class KMIP {
 
     /**
      * Create a KMIP Enumeration field instance
-     * @param tagName - Name of the KMIP Enumeration
+     * @param {String} tagName - Name of the KMIP Enumeration
-     * @param value - Name of the KMIP Enumeration value
+     * @param {String} value - Name of the KMIP Enumeration value
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static Enumeration(tagName: string, value: string) {
+    static Enumeration(tagName, value) {
         return _PrimitiveType(tagName, 'Enumeration', value);
     }
 
     /**
      * Create a KMIP Boolean field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - anything falsey or not (converted to a Boolean)
+     * @param {Boolean} value - anything falsey or not (converted to a Boolean)
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static Boolean(tagName: string, value: boolean) {
+    static Boolean(tagName, value) {
         return _PrimitiveType(tagName, 'Boolean', !!value);
     }
 
     /**
      * Create a KMIP Text String field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - the text string
+     * @param {String} value - the text string
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static TextString(tagName: string, value: string) {
+    static TextString(tagName, value) {
         return _PrimitiveType(tagName, 'TextString', value);
     }
 
     /**
      * Create a KMIP Byte String field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - buffer containing the byte string
+     * @param {Buffer} value - buffer containing the byte string
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static ByteString(tagName: string, value: Buffer) {
+    static ByteString(tagName, value) {
         return _PrimitiveType(tagName, 'ByteString', value);
     }
 
     /**
      * Create a KMIP Date-Time field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - instance of a Date (ms are discarded)
+     * @param {Date} value - instance of a Date (ms are discarded)
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static DateTime(tagName: string, value: Date) {
+    static DateTime(tagName, value) {
         value.setMilliseconds(0);
         return _PrimitiveType(tagName, 'Date-Time', value);
     }
 
     /**
      * Create a KMIP Interval field instance
-     * @param tagName - Name of the KMIP field
+     * @param {String} tagName - Name of the KMIP field
-     * @param value - number of seconds of the interval
+     * @param {Integer} value - number of seconds of the interval
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static Interval(tagName: string, value: number) {
+    static Interval(tagName, value) {
         return _PrimitiveType(tagName, 'Interval', value);
     }
 
     /**
      * Create a KMIP Attribute field instance
-     * @param type - type of the attribute value
+     * @param {String} type - type of the attribute value
-     * @param name - Name of the attribute or KMIP field
+     * @param {String} name - Name of the attribute or KMIP field
-     * @param value - value of the field suitable for the
+     * @param {Object} value - value of the field suitable for the
      *                         specified type
-     * @returns an abstract KMIP field
+     * @returns {Object} an abstract KMIP field
      */
-    static Attribute(type: string, name: string, value: any) {
+    static Attribute(type, name, value) {
         if (type === 'Date-Time') {
             value.setMilliseconds(0);
         }
@@ -210,72 +194,69 @@ export default class KMIP {
      * Register a higher level handshake function to be called
      * after the connection is initialized and before the first
      * message is sent.
-     * @param handshakeFunction - (logger: Object, cb: Function(err))
+     * @param {Function} handshakeFunction - (logger: Object, cb: Function(err))
+     * @returns {undefined}
      */
-    registerHandshakeFunction(
+    registerHandshakeFunction(handshakeFunction) {
-        handshakeFunction: (
-            logger: werelogs.Logger,
-            cb: (error: Error | null) => void,
-        ) => void,
-    ) {
         this.transport.registerHandshakeFunction(handshakeFunction);
     }
 
     /**
      * Decode a raw message, usually received from the transport layer
-     * @param logger - a Logger instance
+     * @param {Object} logger - a Logger instance
-     * @param rawMessage - the message to decode
+     * @param {Buffer} rawMessage - the message to decode
-     * @returns the decoded message as an instance of KMIP.Message
+     * @returns {Object} the decoded message as an instance of KMIP.Message
      */
-    _decodeMessage(logger: werelogs.Logger, rawMessage: Buffer) {
+    _decodeMessage(logger, rawMessage) {
         return this.codec.decode(logger, rawMessage);
     }
 
     /**
      * Encode an message
-     * @param message - Instance of a KMIP.Message
+     * @param {Object} message - Instance of a KMIP.Message
-     * @returns the encoded message suitable for the transport layer
+     * @returns {Buffer} the encoded message suitable for the transport layer
      */
-    _encodeMessage(message: any) {
+    _encodeMessage(message) {
         return this.codec.encode(message);
     }
 
     /**
      * Decode a bitmask
-     * @param tagName - name of the bit mask defining tag
+     * @param {string} tagName - name of the bit mask defining tag
-     * @param givenMask - bit mask to decode
+     * @param {Integer} givenMask - bit mask to decode
-     * @returns array of named bits set in the given bit mask
+     * @returns {Array} array of named bits set in the given bit mask
      */
-    decodeMask(tagName: string, givenMask: number) {
+    decodeMask(tagName, givenMask) {
         return this.codec.decodeMask(tagName, givenMask);
     }
 
     /**
      * Encode a bitmask
-     * @param tagName - name of the bit mask defining tag
+     * @param {String} tagName - name of the bit mask defining tag
-     * @param value - array of named bits to set in the mask
+     * @param {Array} value - array of named bits to set in the mask
-     * @returns Integer encoded bitmask
+     * @returns {Integer} Integer encoded bitmask
      */
-    encodeMask(tagName: string, value: any[]): number {
+    encodeMask(tagName, value) {
         return this.codec.encodeMask(tagName, value);
     }
 
     /**
      * Amend the tag nomenclature with a vendor specific extension
-     * @param extensionName - Name of the tag to record
+     * @param {String} extensionName - Name of the tag to record
-     * @param extensionTag - Tag value represented as an integer
+     * @param {Integer} extensionTag - Tag value represented as an integer
+     * @returns {undefined}
      */
-    mapExtension(extensionName: string, extensionTag: number) {
+    mapExtension(extensionName, extensionTag) {
         return this.codec.mapExtension(extensionName, extensionTag);
     }
 
-    changeProtocolVersion(major: number, minor: number) {
+    changeProtocolVersion(major, minor) {
         this.protocolVersion = { major, minor };
     }
 
     /**
      * Send an operation request message to the KMIP Server
-     * @param logger - Werelog logger object
+     * @param {Object} logger - Werelog logger object
      * @param {String} operation - The name of the operation as defined in
      *                             the KMIP protocol specification.
      * @param {Object} payload - payload of the operation request. Specifically
@@ -284,7 +265,7 @@ export default class KMIP {
      * @param {Function} cb - The callback(error: Object, response: Object)
      * @returns {undefined}
      */
-    request(logger: werelogs.Logger, operation: string, payload: any, cb: (error: Error | null, response?: any) => void) {
+    request(logger, operation, payload, cb) {
         const uuid = _uniqueBatchItemID();
         const message = KMIP.Message([
             KMIP.Structure('Request Message', [
@@ -333,8 +314,6 @@ export default class KMIP {
                 if (performedOperation !== operation) {
                     this.transport.abortPipeline(conversation);
                     const error = Error('Operation mismatch',
-                        // TODO
-                        // @ts-ignore
                         { got: performedOperation,
                             expected: operation });
                     logger.error('KMIP::request: Operation mismatch',
@@ -349,8 +328,6 @@ export default class KMIP {
                           response.lookup(
                               'Response Message/Batch Item/Result Message')[0];
                     const error = Error('KMIP request failure',
-                        // TODO
-                        // @ts-ignore
                         { resultStatus,
                             resultReason,
                             resultMessage });

lib/network/kmip/transport/TransportTemplate.ts

@@ -1,40 +1,19 @@
 import assert from 'assert';
-import tls from 'tls';
-import * as werelogs from 'werelogs';
 
 const DEFAULT_PIPELINE_DEPTH = 8;
 const DEFAULT_KMIP_PORT = 5696;
 
-export type Options = {
-    pipelineDepth: number;
-    tls: {
-        port: number;
-    };
-}
-
 export default class TransportTemplate {
-    channel: typeof tls;
-    options: Options;
-    pipelineDepth: number;
-    callbackPipeline: ((error: Error | null, socket?: any, data?: any) => void)[];
-    deferedRequests: Array<{
-        encodedMessage: Buffer;
-        cb: ((error: Error | null, data?: any) => void)
-    }>;
-    pipelineDrainedCallback: any | null;
-    handshakeFunction: any | null;
-    socket: any;
-
     /**
      * Construct a new object of the TransportTemplate class
-     * @param channel - Typically the tls object
+     * @param {Object} channel - Typically the tls object
-     * @param options - Instance options
+     * @param {Object} options - Instance options
-     * @param options.pipelineDepth - depth of the pipeline
+     * @param {Number} options.pipelineDepth - depth of the pipeline
-     * @param options.tls - Standard TLS socket initialization
+     * @param {Object} options.tls - Standard TLS socket initialization
      *                               parameters
-     * @param options.tls.port - TLS server port to connect to
+     * @param {Number} options.tls.port - TLS server port to connect to
      */
-    constructor(channel: typeof tls, options: Options) {
+    constructor(channel, options) {
         this.channel = channel;
         this.options = options;
         this.pipelineDepth = Math.max(1, options.pipelineDepth ||
@@ -49,9 +28,10 @@ export default class TransportTemplate {
     /**
      * Drain the outstanding and defered request queues by
      * calling the associated callback with an error
-     * @param error - the error to call the callback function with.
+     * @param {Error} error - the error to call the callback function with.
+     * @returns {undefined}
      */
-    _drainQueuesWithError(error: Error) {
+    _drainQueuesWithError(error) {
         this.callbackPipeline.forEach(queuedCallback => {
             queuedCallback(error);
         });
@@ -66,29 +46,23 @@ export default class TransportTemplate {
      * Register a higher level handshake function to be called
      * after the connection is initialized and before the first
      * message is sent.
-     * @param handshakeFunction - (logger: Object, cb: Function(err))
+     * @param {Function} handshakeFunction - (logger: Object, cb: Function(err))
+     * @returns {undefined}
      */
-    registerHandshakeFunction(
+    registerHandshakeFunction(handshakeFunction) {
-        handshakeFunction: (
-            logger: werelogs.Logger,
-            cb: (error: Error | null) => void,
-        ) => void,
-    ) {
         this.handshakeFunction = handshakeFunction;
     }
 
     /**
      * Create a new conversation (e.g. a socket) between the client
      * and the server.
-     * @param logger - Werelogs logger object
+     * @param {Object} logger - Werelogs logger object
-     * @param readyCallback - callback function to call when the
+     * @param {Function} readyCallback - callback function to call when the
      *                                   conversation is ready to be initiated
      *                                   func(err: Error)
+     * @returns {undefined}
      */
-    _createConversation(
+    _createConversation(logger, readyCallback) {
-        logger: werelogs.Logger,
-        readyCallback: (error: Error | null) => void,
-    ) {
         try {
             const socket = this.channel.connect(
                 this.options.tls.port || DEFAULT_KMIP_PORT,
@@ -102,18 +76,16 @@ export default class TransportTemplate {
                 });
             socket.on('data', data => {
                 const queuedCallback = this.callbackPipeline.shift();
-                queuedCallback?.(null, socket, data);
+                queuedCallback(null, socket, data);
 
                 if (this.callbackPipeline.length <
                     this.pipelineDepth &&
                     this.deferedRequests.length > 0) {
                     const deferedRequest = this.deferedRequests.shift();
                     process.nextTick(() => {
-                        if (deferedRequest) {
                         this.send(logger,
                             deferedRequest.encodedMessage,
                             deferedRequest.cb);
-                        }
                     });
                 } else if (this.callbackPipeline.length === 0 &&
                            this.deferedRequests.length === 0 &&
@@ -131,18 +103,14 @@ export default class TransportTemplate {
                 this._drainQueuesWithError(err);
             });
             this.socket = socket;
-        } catch (err: any) {
+        } catch (err) {
             logger.error(err);
             this._drainQueuesWithError(err);
             readyCallback(err);
         }
     }
 
-    _doSend(
+    _doSend(logger, encodedMessage, cb) {
-        logger: werelogs.Logger,
-        encodedMessage: Buffer,
-        cb: (error: Error | null, socket?: any, data?: any) => void,
-    ) {
         this.callbackPipeline.push(cb);
         if (this.socket === null || this.socket.destroyed) {
             this._createConversation(logger, () => {});
@@ -158,16 +126,13 @@ export default class TransportTemplate {
 
     /**
      * Send an encoded message to the server
-     * @param logger - Werelogs logger object
+     * @param {Object} logger - Werelogs logger object
-     * @param encodedMessage - the encoded message to send to the
+     * @param {Buffer} encodedMessage - the encoded message to send to the
      *                                  server
-     * @param cb - (err, conversation, rawResponse)
+     * @param {Function} cb - (err, conversation, rawResponse)
+     * @returns {undefined}
      */
-    send(
+    send(logger, encodedMessage, cb) {
-        logger: werelogs.Logger,
-        encodedMessage: Buffer,
-        cb: (error: Error | null, conversation?: any, rawResponse?: any) => void,
-    ) {
         if (this.callbackPipeline.length >= this.pipelineDepth) {
             return this.deferedRequests.push({ encodedMessage, cb });
         }
@@ -179,6 +144,7 @@ export default class TransportTemplate {
      * Gracefuly interrupt the conversation. If the caller keeps sending
      * message after calling this function, the conversation won't
      * converge to its end.
+     * @returns {undefined}
      */
     end() {
         if (!this.socket) {
@@ -195,9 +161,10 @@ export default class TransportTemplate {
     /**
      * Abruptly interrupt the conversation and cancel the outstanding and
      * defered requests
-     * @param conversation - the conversation to abort
+     * @param {Object} conversation - the conversation to abort
+     * @returns {undefined}
      */
-    abortPipeline(conversation: any) {
+    abortPipeline(conversation) {
         conversation.end();
     }
 }

lib/network/kmip/transport/tls.ts

@@ -1,8 +1,8 @@
-import tls from 'tls';
+import * as tls from 'tls';
-import TransportTemplate, { Options } from './TransportTemplate';
+import TransportTemplate from './TransportTemplate';
 
 export default class TlsTransport extends TransportTemplate {
-    constructor(options: Options) {
+    constructor(options) {
         super(tls, options);
     }
 }