refactor: pick format option from detailOptions

src/cli-constant.js

@@ -4,6 +4,7 @@ const detailOptions = normalizeDetailOptions({
   "bracket-spacing": {
     type: "boolean",
     category: "format",
+    formatOption: true,
     hidden: true
   },
   color: {
@@ -38,6 +39,7 @@ const detailOptions = normalizeDetailOptions({
   "cursor-offset": {
     type: "int",
     exception: -1,
+    formatOption: true,
     description: dedent(`
       Print (to stderr) where a cursor at the given position would move to after formatting.
       This option cannot be used with --range-start and --range-end
@@ -81,6 +83,7 @@ const detailOptions = normalizeDetailOptions({
   "jsx-bracket-same-line": {
     type: "boolean",
     category: "format",
+    formatOption: true,
     description: "Put > on the last line instead of at a new line."
   },
   "list-different": {
@@ -112,6 +115,7 @@ const detailOptions = normalizeDetailOptions({
   parser: {
     type: "choice",
     category: "format",
+    formatOption: true,
     exception: value => typeof value === "string", // allow path to a parser module
     choices: ["flow", "babylon", "typescript", "postcss", "json", "graphql"],
     description: "Specify which parse to use. Defaults to babylon.",
@@ -120,12 +124,14 @@ const detailOptions = normalizeDetailOptions({
   "print-width": {
     type: "int",
     category: "format",
+    formatOption: true,
     description:
       "Specify the length of line that the printer will wrap on. Defaults to 80."
   },
   "range-end": {
     type: "int",
     category: "format",
+    formatOption: true,
     exception: Infinity,
     description: dedent(`
       Format code ending at a given character offset (exclusive).
@@ -137,6 +143,7 @@ const detailOptions = normalizeDetailOptions({
   "range-start": {
     type: "int",
     category: "format",
+    formatOption: true,
     description: dedent(`
       Format code starting at a given character offset.
       The range will extend backwards to the start of the first line containing the selected statement.
@@ -147,11 +154,13 @@ const detailOptions = normalizeDetailOptions({
   semi: {
     type: "boolean",
     category: "format",
+    formatOption: true,
     hidden: true
   },
   "single-quote": {
     type: "boolean",
     category: "format",
+    formatOption: true,
     description: "Use single quotes instead of double quotes."
   },
   stdin: {
@@ -160,17 +169,20 @@ const detailOptions = normalizeDetailOptions({
   },
   "stdin-filepath": {
     type: "path",
+    formatOption: "filepath",
     description: "Path to the file used to read from stdin."
   },
   "tab-width": {
     type: "int",
     category: "format",
+    formatOption: true,
     description:
       "Specify the number of spaces per indentation-level. Defaults to 2."
   },
   "trailing-comma": {
     type: "choice",
     category: "format",
+    formatOption: true,
     choices: [
       "none",
       "es5",
@@ -183,6 +195,7 @@ const detailOptions = normalizeDetailOptions({
   "use-tabs": {
     type: "boolean",
     category: "format",
+    formatOption: true,
     description: "Indent lines with tabs instead of spaces."
   },
   version: {
@@ -239,6 +252,10 @@ function dedent(str) {
   return str.replace(new RegExp(`^ {${spaces}}`, "gm"), "").trim();
 }
 
+function kebabToCamel(str) {
+  return str.replace(/-([a-z])/g, (_, char) => char.toUpperCase());
+}
+
 function normalizeDetailOptions(rawDetailOptions) {
   const names = Object.keys(rawDetailOptions).sort();
 
@@ -246,6 +263,11 @@ function normalizeDetailOptions(rawDetailOptions) {
     const option = rawDetailOptions[name];
     return Object.assign({}, option, {
       name,
+      formatOption:
+        option.formatOption &&
+        (typeof option.formatOption === "string"
+          ? option.formatOption
+          : kebabToCamel(name)),
       choices:
         option.choices &&
         option.choices.map(

src/cli-util.js

@@ -18,21 +18,13 @@ const validator = require("./cli-validator");
 const apiDefaultOptions = require("./options").defaults;
 
 function getOptions(argv) {
-  return {
-    cursorOffset: argv["cursor-offset"],
-    rangeStart: argv["range-start"],
-    rangeEnd: argv["range-end"],
-    useTabs: argv["use-tabs"],
-    semi: argv["semi"],
-    printWidth: argv["print-width"],
-    tabWidth: argv["tab-width"],
-    bracketSpacing: argv["bracket-spacing"],
-    singleQuote: argv["single-quote"],
-    jsxBracketSameLine: argv["jsx-bracket-same-line"],
-    filepath: argv["stdin-filepath"],
-    trailingComma: argv["trailing-comma"],
-    parser: argv["parser"]
-  };
+  return constant.detailOptions
+    .filter(option => option.formatOption)
+    .reduce(
+      (current, option) =>
+        Object.assign(current, { [option.formatOption]: argv[option.name] }),
+      {}
+    );
 }
 
 function dashifyObject(object) {