.eslintrc.js

"use strict";

/* eslint-env node */

module.exports = {
  // When adding items to this file please check for effects on sub-directories.
  "parserOptions": {"ecmaVersion": 8},
  "env": {
    "browser": true,
    "es6": true,
    "mocha": true
  },
  "globals": {
    "Components": false,
    "APP_SHUTDOWN": false
  },
  "plugins": [
    "json",
    "mozilla",
    "promise"
  ],
  "extends": [
    "plugin:mozilla/recommended"
  ],
  "overrides": [{
    // Don't enable for old add-ons that were written before we had the rule.
    "files": [
      "addons/asyncrendering/**",
      "addons/aushelper/**",
      "addons/disable-captive-portal/**",
      "addons/disable-cert-transparency/**",
      "addons/disable-prefetch/**",
      "addons/enable-screenshots/**",
      "addons/hsts-priming/**",
      "addons/outofdate-notifications/**",
      "addons/tls13-comparison-v1/**",
      "addons/tls13-compat-ff51/**",
      "addons/tls13-middlebox-draft22/**",
      "addons/tls13-middlebox-ghack/**",
      "addons/tls13-middlebox-serverhello/**",
      "addons/tls13-rollout-bug1442042/bootstrap.js",
      "addons/websensehelper/**"
    ],
    "rules": {
      "mozilla/use-chromeutils-import": "off",
      "mozilla/no-define-cc-etc": "off"
    }
  }],
  "rules": {
    "mozilla/import-globals": "warn",

    "promise/always-return": "error",
    "promise/catch-or-return": "error",
    "promise/param-names": "error",

    "accessor-pairs": ["error", {"setWithoutGet": true, "getWithoutSet": false}],
    "array-bracket-spacing": ["error", "never"],
    "array-callback-return": "error",
    "arrow-body-style": ["error", "as-needed"],
    "arrow-parens": ["error", "as-needed"],
    "block-scoped-var": "error",
    "block-spacing": ["error", "never"],
    "brace-style": "off",
    "callback-return": "off",
    "camelcase": "off",
    "comma-dangle": ["error", "never"],
    "comma-spacing": "error",
    "comma-style": "error",
    "complexity": ["error", {"max": 20}],
    "consistent-this": ["error", "use-bind"],
    "constructor-super": "error",
    "curly": ["error", "all"],
    "default-case": "off",
    "dot-location": ["error", "property"],
    "dot-notation": "error",
    "func-names": "off",
    "func-style": "off",
    "generator-star-spacing": ["error", {"before": false, "after": false}],
    "global-require": "off",
    "guard-for-in": "error",
    "handle-callback-err": "error",
    "id-blacklist": "off",
    "id-length": "off",
    "id-match": "off",
    "indent": ["error", 2, {"SwitchCase": 1}],
    "init-declarations": "off",
    "jsx-quotes": ["error", "prefer-double"],
    "lines-around-comment": ["error", {
      "beforeBlockComment": true,
      "allowObjectStart": true
    }],
    "max-depth": ["error", 4],
    "max-len": "off",
    "max-lines": "off",
    "max-nested-callbacks": ["error", 4],
    "max-params": ["error", 6],
    "max-statements": ["error", 50],
    "max-statements-per-line": ["error", {"max": 2}],
    "multiline-ternary": "off",
    "new-cap": ["error", {"newIsCap": true, "capIsNew": false}],
    "new-parens": "error",
    "newline-after-var": "off",
    "newline-before-return": "off",
    "newline-per-chained-call": ["error", {"ignoreChainWithDepth": 3}],
    "no-alert": "error",
    "no-array-constructor": "error",
    "no-bitwise": "off",
    "no-caller": "error",
    "no-case-declarations": "error",
    "no-catch-shadow": "error",
    "no-class-assign": "error",
    "no-confusing-arrow": "error",
    "no-console": "error",
    "no-const-assign": "error",
    "no-constant-condition": "error",
    "no-continue": "off",
    "no-control-regex": "error",
    "no-div-regex": "error",
    "no-dupe-class-members": "error",
    "no-duplicate-imports": "error",
    "no-empty": "error",
    "no-empty-function": "off",
    "no-eq-null": "error",
    "no-eval": "error",
    "no-extend-native": "error",
    "no-extra-label": "error",
    "no-extra-parens": "off",
    "no-fallthrough": "error",
    "no-floating-decimal": "error",
    "no-implicit-coercion": ["error", {"allow": ["!!"]}],
    "no-implicit-globals": "off",
    "no-implied-eval": "error",
    "no-inline-comments": "off",
    "no-inner-declarations": "error",
    "no-invalid-this": "off",
    "no-label-var": "error",
    "no-loop-func": "error",
    "no-magic-numbers": "off",
    "no-mixed-operators": ["error", {
      "allowSamePrecedence": true,
      "groups": [
        ["&", "|", "^", "~", "<<", ">>", ">>>"],
        ["==", "!=", "===", "!==", ">", ">=", "<", "<="],
        ["&&", "||"],
        ["in", "instanceof"]
      ]
    }],
    "no-mixed-requires": "error",
    "no-multi-spaces": "error",
    "no-multi-str": "error",
    "no-multiple-empty-lines": ["error", {"max": 1, "maxBOF": 0, "maxEOF": 0}],
    "no-negated-condition": "off",
    "no-negated-in-lhs": "error",
    "no-new": "error",
    "no-new-func": "error",
    "no-new-require": "error",
    "no-new-symbol": "error",
    "no-new-wrappers": "error",
    "no-octal-escape": "error",
    "no-param-reassign": "error",
    "no-path-concat": "error",
    "no-plusplus": "off",
    "no-process-env": "off",
    "no-process-exit": "error",
    "no-proto": "error",
    "no-prototype-builtins": "error",
    "no-restricted-globals": "error",
    "no-restricted-imports": "error",
    "no-restricted-modules": "error",
    "no-restricted-syntax": "error",
    "no-return-assign": ["error", "except-parens"],
    "no-script-url": "error",
    "no-sequences": "error",
    "no-shadow": "off", // TODO: Change to `1`?
    "no-spaced-func": "error",
    "no-sync": "error",
    "no-tabs": "error",
    "no-ternary": "off",
    "no-this-before-super": "error",
    "no-throw-literal": "error",
    "no-undef-init": "error",
    "no-undefined": "off",
    "no-underscore-dangle": "off",
    "no-unmodified-loop-condition": "error",
    "no-unneeded-ternary": "error",
    "no-unused-expressions": "error",
    "no-unused-labels": "error",
    "no-use-before-define": "error",
    "no-useless-computed-key": "error",
    "no-useless-constructor": "error",
    "no-useless-escape": "error",
    "no-useless-rename": "error",
    "no-var": "error",
    "no-void": "error",
    "no-warning-comments": "off", // TODO: Change to `1`?
    "no-whitespace-before-property": "error",
    "object-curly-newline": ["error", {"multiline": true}],
    "object-curly-spacing": ["error", "never"],
    "object-property-newline": ["error", {"allowMultiplePropertiesPerLine": true}],
    "one-var": ["error", "never"],
    "one-var-declaration-per-line": ["error", "initializations"],
    "operator-assignment": ["error", "always"],
    "operator-linebreak": ["error", "after"],
    "padded-blocks": ["error", "never"],
    "prefer-arrow-callback": ["error", {"allowNamedFunctions": true}],
    "prefer-const": "off",
    "prefer-reflect": "off",
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "prefer-template": "error",
    "quote-props": ["error", "consistent"],
    "radix": ["error", "always"],
    "require-jsdoc": "off",
    "require-yield": "error",
    "semi": ["error", "always"],
    "semi-spacing": ["error", {"before": false, "after": true}],
    "sort-imports": "error",
    "sort-vars": "error",
    "space-in-parens": ["error", "never"],
    "strict": "off",
    "template-curly-spacing": ["error", "never"],
    "unicode-bom": ["error", "never"],
    "valid-jsdoc": ["off", {
      "requireReturn": false,
      "requireParamDescription": false,
      "requireReturnDescription": false
    }],
    "wrap-iife": ["error", "inside"],
    "wrap-regex": "off",
    "yield-star-spacing": ["error", "after"],
    "yoda": ["error", "never"]
  }
};