.eslintrc.json

{
  // Extend the Airbnb lint config
  "extends": "airbnb",
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 6,
    "ecmaFeatures": {
      "globalReturn": true,
      "impliedStrict": true,
      "jsx": true
    },
    "sourceType": "module"
  },
  "env": {
    "es6": true,
    "browser": true,
    "node": true
  },
  "globals": {
    "wp": true
  },
  "rules": {
    "indent": [2, 2, {"SwitchCase": 1}],
    "max-len": [2, 80, 4, {
      "ignoreComments": true,
      "ignoreUrls": true
    }],
    "quotes": [2, "single"],
    "semi": [2, "always"],
    "no-multiple-empty-lines": [2, {"max": 1}],
    "comma-dangle": [2, "always-multiline"],
    "dot-location": [2, "property"],
    "one-var": [2, "never"],
    "no-var": [2],
    "prefer-const": ["error"],
    "no-bitwise": [2],
    "id-length": ["error", {
      "properties": "never",
      "exceptions": ["x", "y", "i", "e", "n", "k"]
    }],
    "func-names": [1, "always"],
    "no-use-before-define": [2, "nofunc"],
    "yoda": [2, "always"],
    "object-curly-spacing": [2, "always"],
    "array-bracket-spacing": [2, "never"],
    "space-unary-ops": [2, {"words": true, "nonwords": true}],
    "keyword-spacing": ["error", {"after": true}],
    "space-before-blocks": [2, "always"],
    "space-in-parens": [2, "never"],
    "spaced-comment": [2, "always"],
    "no-confusing-arrow": ["error", {"allowParens": true}],
    "no-constant-condition": ["error"],
    "arrow-parens": ["error", "always"],
    "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx"] }],
    "import/no-extraneous-dependencies": [0],
    "import/no-unresolved": [0],
    "import/extensions": [0],
    "react/prefer-stateless-function": [0]
  }
}