ESLINT

.eslintrc

{
  "env": {
    //enable nodejs environment
    "node": true,
    //enable browser environment
    "browser": true
  },
  "globals": {
    "Promise" : true
  },
  "plugins": [
    "react"
  ],
  "settings": {
    "react": {
      "pragma": "React",  // Pragma to use, default to "React"
      "version": "0.14.7" // React version, default to the latest React stable release
    }
  },
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion" : 6,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "strict" : "safe",
  // code style
  "rules": {
    //enable ESLint rules, such as
    "block-spacing": [2, "always"],
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "array-bracket-spacing" : [2, "always", { "singleValue" : false, "arraysInArrays" : false, "objectsInArrays": false }],
    "camelcase": [2, {"properties": "always"}],
    "comma-spacing": [2, {"before": false, "after": true}],
    "comma-style": [2, "last"],
    "computed-property-spacing": [2, "never"],
    "eqeqeq": 1,
    "func-names": 2,
    "indent": [2, 2, {"SwitchCase": 1}],
    "key-spacing": [2, {"beforeColon": true, "afterColon": true}],
    "keyword-spacing": 2,
    "max-depth": [2, {"maximum": 8}],
    "max-len": [1, 120, 4],
    "max-nested-callbacks": [2, {"maximum": 3}],
    "new-cap": 2,
    "new-parens": 2,
    "newline-after-var": [2, "always"],
    "newline-before-return": "error",
    "newline-per-chained-call": [2, {"ignoreChainWithDepth": 3}],
    "no-lonely-if": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-multiple-empty-lines": [2, {"max": 1}],
    "no-nested-ternary": 2,
    "no-new-object": 2,
    "no-undef": 2,
    "no-undef-init": 2,
    "no-use-before-define": 2,
    "no-shadow": 2,
    "no-spaced-func": 2,
    "no-trailing-spaces": 2,
    "no-unneeded-ternary": 2,
    "no-whitespace-before-property": 2,
    "object-curly-spacing": [2, "always"],
    "one-var": [2, "always"],
    "one-var-declaration-per-line": [2, "always"],
    "semi": [2, "always"],
    "semi-spacing": 2,
    "space-before-blocks": 2,
    "space-before-function-paren": 2,
    "space-infix-ops": 2,
    "space-unary-ops": 2,
    "spaced-comment": [2, "always"],
    "arrow-spacing": [2, { "before": true, "after": true }]
  }
}