chore: extract jest snapshot serializers (#5034)

jest.config.js

@@ -13,8 +13,8 @@ const isOldNode = semver.parse(process.version).major <= 4;
 module.exports = {
   setupFiles: ["<rootDir>/tests_config/run_spec.js"],
   snapshotSerializers: [
-    "<rootDir>/tests_config/raw-serializer.js",
-    "<rootDir>/tests_config/ansi-serializer.js"
+    "jest-snapshot-serializer-raw",
+    "jest-snapshot-serializer-ansi"
   ],
   testRegex: "jsfmt\\.spec\\.js$|__tests__/.*\\.js$",
   testPathIgnorePatterns: ["tests/new_react", "tests/more_react"].concat(

package.json

@@ -81,9 +81,10 @@
     "eslint-plugin-prettier": "2.6.0",
     "eslint-plugin-react": "7.7.0",
     "execa": "0.10.0",
-    "has-ansi": "3.0.0",
     "jest": "23.3.0",
     "jest-junit": "5.0.0",
+    "jest-snapshot-serializer-ansi": "1.0.0",
+    "jest-snapshot-serializer-raw": "1.1.0",
     "jest-watch-typeahead": "0.1.0",
     "mkdirp": "0.5.1",
     "prettier": "1.14.2",

tests_config/ansi-serializer.js

@@ -1,13 +0,0 @@
-"use strict";
-
-const hasAnsi = require("has-ansi");
-const stripAnsi = require("strip-ansi");
-
-module.exports = {
-  print(value, serialize) {
-    return serialize(stripAnsi(value));
-  },
-  test(value) {
-    return typeof value === "string" && hasAnsi(value);
-  }
-};

tests_config/raw-serializer.js

@@ -1,16 +0,0 @@
-"use strict";
-
-const RAW = Symbol.for("raw");
-
-module.exports = {
-  print(val) {
-    return val[RAW];
-  },
-  test(val) {
-    return (
-      val &&
-      Object.prototype.hasOwnProperty.call(val, RAW) &&
-      typeof val[RAW] === "string"
-    );
-  }
-};

tests_config/run_spec.js

@@ -2,6 +2,7 @@
 
 const fs = require("fs");
 const extname = require("path").extname;
+const raw = require("jest-snapshot-serializer-raw").wrap;
 
 const AST_COMPARE = process.env["AST_COMPARE"];
 const TEST_STANDALONE = process.env["TEST_STANDALONE"];
@@ -130,18 +131,6 @@ function skipStandalone(parser) {
   return new Set(["parse5"]).has(parser);
 }
 
-/**
- * Wraps a string in a marker object that is used by `./raw-serializer.js` to
- * directly print that string in a snapshot without escaping all double quotes.
- * Backticks will still be escaped.
- */
-function raw(string) {
-  if (typeof string !== "string") {
-    throw new Error("Raw snapshots have to be strings.");
-  }
-  return { [Symbol.for("raw")]: string };
-}
-
 function mergeDefaultOptions(parserConfig) {
   return Object.assign(
     {

yarn.lock

@@ -2603,18 +2603,18 @@ har-validator@~5.0.3:
     ajv "^5.1.0"
     har-schema "^2.0.0"
 
-has-ansi@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-3.0.0.tgz#36077ef1d15f333484aa7fa77a28606f1c655b37"
-  dependencies:
-    ansi-regex "^3.0.0"
-
 has-ansi@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
   dependencies:
     ansi-regex "^2.0.0"
 
+has-ansi@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-3.0.0.tgz#36077ef1d15f333484aa7fa77a28606f1c655b37"
+  dependencies:
+    ansi-regex "^3.0.0"
+
 has-flag@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-1.0.0.tgz#9d9e793165ce017a00f00418c43f942a7b1d11fa"
@@ -3471,6 +3471,17 @@ jest-serializer@^23.0.1:
   version "23.0.1"
   resolved "https://registry.yarnpkg.com/jest-serializer/-/jest-serializer-23.0.1.tgz#a3776aeb311e90fe83fab9e533e85102bd164165"
 
+jest-snapshot-serializer-ansi@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/jest-snapshot-serializer-ansi/-/jest-snapshot-serializer-ansi-1.0.0.tgz#7daeefe7bfa81aed44e153fd3451320b61dc2a67"
+  dependencies:
+    has-ansi "^3.0.0"
+    strip-ansi "^4.0.0"
+
+jest-snapshot-serializer-raw@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/jest-snapshot-serializer-raw/-/jest-snapshot-serializer-raw-1.1.0.tgz#1d7f09c02f3dbbc3ae70b5b7598fb2f45e37d6c8"
+
 jest-snapshot@^23.0.1:
   version "23.3.0"
   resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-23.3.0.tgz#fc4e9f81e45432d10507e27f50bce60f44d81424"