.eslintrc

{
  "parser": "babel-eslint",

  "ecmaFeatures": {
    "jsx": true,
    "arrowFunctions": true,
    "blockBindings": true,
    "destructuring": true,
    "objectLiteralComputedProperties": true,
    "templateStrings": true,
    "defaultParams": true,
    "restParams": true
  },

  "env": {
    "browser": true,
    "mocha": true,
    "node": true
  },

  "plugins": [
    "react"
  ],

  // Some rules could be eventually overriden for the development environment
  // in the gulpfile.js.
  // Consider these rules to apply perfectly on a release/production.
  "rules": {
    "no-unused-vars": [1],
    "no-console": [2],
    "eqeqeq": [2, "smart"],
    "quotes": [2, "double"],
    "indent": [2, 2, {"SwitchCase": 1, "VariableDeclarator": 1}],
    "camelcase": [2, {"properties": "always"}],
    "strict": [2, "never"], // <-- fix
    "block-spacing": [2, "always"],
    "no-mixed-spaces-and-tabs": [2],
    "no-trailing-spaces": [2, { "skipBlankLines": false }],
    "no-underscore-dangle": 2,
    "no-multiple-empty-lines": [2, {"max": 1}],
    "no-empty": [2],
    "one-var": [2, "never"],
    "object-curly-spacing": [2, "never"],
    "space-after-keywords": [2, "always"],
    "space-before-blocks": [2, "always"],
    "space-before-function-paren": [2, {
      "anonymous": "always", "named": "never"
    }],
    "spaced-comment": [2, "always", { "exceptions": ["*"]}],
    "semi": [2, "always"],
    "max-len": [2, 80, 4],
    "valid-jsdoc": [2, {
      "requireReturn": false,
      "requireParamDescription": false
    }],

    // React plugin
    "react/display-name": [2, {"acceptTranspilerName": true}],
    "jsx-quotes": [2, "prefer-double"],
    "react/jsx-no-undef": 2,
    "react/jsx-uses-vars": [2, {"vars": "all", "args": "after-used"}],
    "react/jsx-sort-prop-types": 2,
    "react/no-did-mount-set-state": 2,
    "react/no-did-update-set-state": 2,
    "react/no-direct-mutation-state": 2,
    "react/no-multi-comp": [2, {"ignoreStateless": true}],
    "react/prop-types": 2,
    "react/react-in-jsx-scope": 2,
    "react/self-closing-comp": 2,
    "react/wrap-multilines": 2
  }
}