.eslintrc.json

{
  "extends": ["eslint:recommended", "airbnb-base"],
  "env": {
    "browser": true,
    "es6": true
  },
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module"
  },
  "rules": {
    "arrow-parens": ["error", "always"],
    "brace-style": ["error", "1tbs", { "allowSingleLine": false }],
    "class-methods-use-this": "warn",
    "comma-dangle": "off",
    "curly": ["error", "all"],
    "eqeqeq": "error",
    "global-strict": ["off", "always"],
    "import/no-extraneous-dependencies": ["error", {"optionalDependencies": true}],
    "indent": ["error", 2, { "SwitchCase": 1, "ArrayExpression": 1, "ObjectExpression": 1 }],
    "key-spacing": ["error", { "align": "value" }],
    "max-statements-per-line": "error",
    "new-cap": ["error", {
      "newIsCap": true,
      "capIsNew": true,
      "newIsCapExceptions": [],
      "capIsNewExceptions": []
    }],
    "newline-before-return": "error",
    "no-bitwise": ["error", { "int32Hint": true }],
    "no-console": "off",
    "no-multi-spaces": ["error", {"exceptions": { "ImportDeclaration": true }}],
    "no-param-reassign": "warn",
    "no-plusplus": ["error", { "allowForLoopAfterthoughts": true }],
    "no-underscore-dangle": "off",
    "no-unused-vars": "warn",
    "no-use-before-define": "warn",
    "no-warning-comments": ["warn", { "terms": ["todo", "fixme", "urgent", "fix"], "location": "anywhere"}],
    "nonblock-statement-body-position": ["warn", "below"],
    "quotes": ["error", "single", {"avoidEscape": true, "allowTemplateLiterals": true}],
    "space-before-function-paren": ["error", "never"],
    "strict": ["off", "global"]
  }
}