.eslintrc

// ESLint Reset - A starter .eslintrc file that resets all rules to off and includes a description of what each rule does.
// From here, enable the rules that you care about by changing the 0 to a 1 or 2.
// 1 means warning (will not affect exit code) and 2 means error (will affect exit code).
// See: https://gist.github.com/ghostwords/40936f11091b87987e56
// See: http://eslint.org/docs/rules/
// See: https://github.com/feross/eslint-config-standard

{
  "plugins": [
    "compat",     // Allow configuration of target browser/s (npm i -D eslint-plugin-compat)
    "import"
    //"react"     // React specific linting rules (npm i -D eslint-plugin-react)
    //"flowtype"  // Will not use flow. See: https://github.com/facebook/flow/issues/869#issuecomment-256643823
  ],
  "parserOptions": {
    "ecmaVersion": 2017,
    "sourceType": "module",
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "globalReturn": true,
      "jsx": true,
      "modules": true
    }
  },
  "env": {
    "browser": true, // browser global variables
    "node": true,    // Node.js global variables and Node.js-specific rules
    "mocha": true,   // adds all of the Mocha testing global variables
    "es6": true      // ECMAScript 6
  },
  "extends": [
    "eslint:recommended",
    "plugin:import/errors",
    "plugin:import/warnings"
    //"plugin:react/recommended"
    //"plugin:flowtype/recommended" // Will not use flow. See: https://github.com/facebook/flow/issues/869#issuecomment-256643823
  ],

  "parser": "babel-eslint",

  "settings": {
    "ecmascript": 2017,
    "jsx": true,
    "polyfills": [
      "fetch", "promises"
    ]
  },
  "globals": {
    // "componentHandler": true // Material Design Lite
    "browser": true
  },
  "rules": {
    "arrow-parens": ["error", "always"],
    "brace-style": 0,
    "comma-dangle": 0,
    "compat/compat": "error", // required by eslint-plugin-compat
    "import/no-extraneous-dependencies": 0,
    "import/prefer-default-export": 0,
    "indent": [
      2, 2, {
        "SwitchCase": 1,
        "VariableDeclarator": 2,
        "ignoredNodes": [
          "JSXElement",
          "JSXElement > *",
          "JSXOpeningElement",
          "JSXClosingElement",
          "JSXAttribute",
          "JSXIdentifier",
          "JSXNamespacedName",
          "JSXMemberExpression",
          "JSXSpreadAttribute",
          "JSXExpressionContainer",
          "JSXText",
          "JSXEmptyExpression",
          "JSXSpreadChild"
        ]
      }
    ],
    "linebreak-style": 0,
    "max-len": ["error", {"code": 120, "ignoreUrls": true, "ignoreComments": true}],
    "max-statements-per-line": [1, {"max": 1}],
    "no-console": 1,
    "no-multi-spaces": ["error", {"ignoreEOLComments": true}],
    "no-restricted-syntax": 1,
    "no-iterator": 1,
    "no-underscore-dangle": 0,
    "no-unused-vars": ["error", {"varsIgnorePattern": "h"}],
    "no-var": 1,
    "object-curly-newline": ["error", {"consistent": true}],
    "object-curly-spacing": ["error", "never"],
    "prefer-const": 1,
    "prefer-rest-params": 1,
    "prefer-spread": 1,
    "prefer-template": 1,
    "quotes": [2, "single"],
    "semi": [2, "always"],
    "strict": 0
  }
}