.eslintrc

{
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "env": {
    "browser": true,
    "node": true
  },
  "plugins": [
    "react",
    "babel"
  ],
  "extends": [
    "eslint:recommended"
  ],
  "rules": {
    // possible errors
    "no-cond-assign": 0,
    "no-empty": 0,
    // "valid-jsdoc": 1, // TODO(philipwalton): convert to errors.
    // best practices
    "no-extra-bind": 2,
    // style
    "comma-spacing": [2, {"before": false, "after": true}],
    "eol-last": [0],
    "jsx-quotes": [2, "prefer-double"],
    "key-spacing": [2, {"beforeColon": false, "afterColon": true}],
    "linebreak-style": [2, "unix"],
    "max-len": [2, 80],
    "no-multiple-empty-lines": [2, {"max": 2}],
    "no-unused-vars": [2, {"vars": "all"}],
    "no-trailing-spaces": 2,
    "object-curly-spacing": [2, "never"],
    "quotes": [2, "single"],
    // "require-jsdoc": [1, { // TODO(philipwalton): convert to errors.
    //   "require": {
    //     "FunctionDeclaration": true,
    //     "MethodDefinition": false,
    //     "ClassDeclaration": false
    //   }
    // }],
    "semi": [2, "always"],
    "semi-spacing": [2, {"before": false, "after": true}],
    // es2015
    "arrow-spacing": [2, {"before": true, "after": true}],
    "no-var": 2,
    // react
    "react/jsx-key": 2,
    "react/jsx-uses-react": 2,
    "react/jsx-uses-vars": 2,
    "react/prefer-es6-class": [2, "always"],
    // babel
    "babel/arrow-parens": [2, "always"]
  }
}