gecko-dev/security/.eslintrc.js

"use strict";

module.exports = {
  "extends": [
    "plugin:mozilla/recommended"
  ],
  "rules": {
    // Enforce return statements in callbacks of array methods.
    "array-callback-return": "error",

    // Braces only needed for multi-line arrow function blocks
    "arrow-body-style": ["error", "as-needed"],

    // Commas at the end of the line not the start
    "comma-style": "error",

    // Verify calls of super() in constructors.
    "constructor-super": "error",

    // Require braces around blocks that start a new line
    "curly": ["error", "multi-line"],

    // Require default case in switch statements.
    "default-case": "error",

    // Require `foo.bar` dot notation instead of `foo["bar"]` notation.
    "dot-notation": "error",

    // Require function* name()
    "generator-star-spacing": ["error", {"before": false, "after": true}],

    // Always require parenthesis for new calls
    "new-parens": "error",

    // Disallow use of alert(), confirm(), and prompt().
    "no-alert": "error",

    // Use [] instead of Array()
    "no-array-constructor": "error",

    // Disallow use of arguments.caller or arguments.callee.
    "no-caller": "error",

    // Disallow likely erroneous `switch` scoped lexical declarations in
    // case/default clauses.
    "no-case-declarations": "error",

    // Disallow modifying variables of class declarations.
    "no-class-assign": "error",

    // Disallow use of the console API.
    "no-console": "error",

    // Disallow modifying variables that are declared using const.
    "no-const-assign": "error",

    // Disallow constant expressions in conditions (except for loops).
    "no-constant-condition": ["error", { "checkLoops": false }],

    // Disallow control characters in regular expressions.
    "no-control-regex": "error",

    // Disallow duplicate class members.
    "no-dupe-class-members": "error",

    // Disallow use of eval().
    "no-eval": "error",

    // Disallow extending of native objects.
    "no-extend-native": "error",

    // Disallow case statement fallthrough without explicit `// falls through`
    // annotation.
    "no-fallthrough": "error",

    // No reassigning native JS objects or read only globals.
    "no-global-assign": "error",

    // Disallow primitive wrapper instances like `new Boolean(false)`, which
    // seem like they should act like primitives but don't.
    "no-new-wrappers": "error",

    // Disallow use of assignment in return statement.
    "no-return-assign": ["error", "always"],

    // Disallow use of the comma operator.
    "no-sequences": "error",

    // Disallow tabs.
    "no-tabs": "error",

    // Disallow template literal placeholder syntax in regular strings.
    "no-template-curly-in-string": "error",

    // Disallow use of this/super before calling super() in constructors.
    "no-this-before-super": "error",

    // Disallow throwing literals (eg. |throw "error"| instead of
    // |throw new Error("error")|)
    "no-throw-literal": "error",

    // Disallow unmodified loop conditions.
    "no-unmodified-loop-condition": "error",

    // Disallow ternary operators when simpler alternatives exist.
    "no-unneeded-ternary": "error",

    // No expressions where a statement is expected
    "no-unused-expressions": "error",

    // Disallow unnecessary escape usage in strings and regular expressions.
    "no-useless-escape": "error",

    // Disallow whitespace before properties.
    "no-whitespace-before-property": "error",

    // Disallow blank line padding within blocks.
    "padded-blocks": ["error", "never"],

    // Always require semicolon at end of statement
    "semi": ["error", "always"],

    // Enforce spacing after semicolons.
    "semi-spacing": ["error", { "before": false, "after": true }],

    // Never use spaces before named function parentheses, but always for async
    // arrow functions.
    "space-before-function-paren": ["error", {
      "anonymous": "ignore",
      "asyncArrow": "always",
      "named": "never",
    }],

    // No space padding in parentheses
    "space-in-parens": ["error", "never"],

    // ++ and -- should not need spacing
    "space-unary-ops": ["error", { "words": true, "nonwords": false }],

    // Require "use strict" to be defined globally in the script.
    "strict": ["error", "global"],

    // Enforce valid JSDoc comments.
    "valid-jsdoc": ["error", {
      "requireParamDescription": false,
      "requireReturn": false,
      "requireReturnDescription": false,
    }],

    // Disallow Yoda conditions.
    "yoda": ["error", "never"],
  }
};