安裝

shell> npm install -g jshint
shell> jshint

function main() {
  "use strict";
  return 'Hello, World!';
}

main();

.jshintrc

{
  "strict" : true,
  "undef"   : true,
  "validthis" : true,
  "node"   : true,
  "esversion" : 6,
  "curly"  : true,
  "unused" : true
}

Semicolon [͵sɛmɪˋkolən] 分號 Expected [ɪkˋspɛktɪd] 需要

參考網站：

• jshint
• docs
• option-validthis-cant-be-used-in-a-global-scope
• Strict_mode

ESLint

安裝

shell> npm install -g eslint
shell> eslint --init

.eslintrc

{
  "rules": {
    "semi": ["error", "always"],
    "quotes": ["error", "single"]
  }
}

"eqeqeq": "off",
"eqeqeq": "warn"

"strict": "off"
"strict": "warn"
"strict": "error"

"curly": "error",
"quotes": ["error", "double"],
"quotes": ["error", "single"],

"indent": ["error", 4],
"linebreak-style": ["error", "unix"],
"semi": ["error", "always"],
"one-var": "off", // ["error", "never"]
"no-console": "off",
"no-cond-assign": ["error", "always"],
"no-inline-comments": "off",
"comma-dangle": ["error", "always"],

{
  "extends": "google",
  "installedESLint": true
}

'use strict';

function doSomething() {
}

Complete!

參考網站：

• eslint
• quotes
• strict
• code-conventions