"use strict"; module.exports = { "plugins": [ "react" ], "globals": { "atob": true, "btoa": true, "Components": true, "CSSRule": true, "clearInterval": true, "clearTimeout": true, "console": true, "CSS": true, "DocumentFragment": true, "DOMParser": true, "dump": true, "Element": true, "exports": true, "isWorker": true, "indexedDB": true, "loader": true, "module": true, "Node": true, "reportError": true, "require": true, "setInterval": true, "setTimeout": true, "uneval": true, "TextDecoder": true, "TextEncoder": true, "URL": true, "WebSocket": true, "XMLHttpRequest": true }, "rules": { // These are the rules that have been configured so far to match the // devtools coding style. // Rules from the mozilla plugin "mozilla/no-aArgs": "error", "mozilla/no-cpows-in-tests": "error", "mozilla/no-single-arg-cu-import": "error", // See bug 1224289. "mozilla/reject-importGlobalProperties": "error", // devtools/shared/platform is special; see the README.md in that // directory for details. We reject requires using explicit // subdirectories of this directory. "mozilla/reject-some-requires": ["error", "^devtools/shared/platform/(chome|content)/"], "mozilla/var-only-at-top-level": "error", // Rules from the React plugin "react/display-name": "error", "react/no-danger": "error", "react/no-did-mount-set-state": "error", "react/no-did-update-set-state": "error", "react/no-direct-mutation-state": "error", "react/no-unknown-property": "error", "react/prefer-es6-class": ["off", "always"], "react/prop-types": "error", "react/sort-comp": ["error", { order: [ "lifecycle", "everything-else", "render" ], groups: { lifecycle: [ "displayName", "propTypes", "contextTypes", "childContextTypes", "mixins", "statics", "defaultProps", "constructor", "getDefaultProps", "getInitialState", "state", "getChildContext", "componentWillMount", "componentDidMount", "componentWillReceiveProps", "shouldComponentUpdate", "componentWillUpdate", "componentDidUpdate", "componentWillUnmount" ] } }], // Disallow using variables outside the blocks they are defined (especially // since only let and const are used, see "no-var"). "block-scoped-var": "error", // Enforce one true brace style (opening brace on the same line) and avoid // start and end braces on the same line. "brace-style": ["error", "1tbs", {"allowSingleLine": false}], // Require camel case names "camelcase": "error", // Allow trailing commas for easy list extension. Having them does not // impair readability, but also not required either. "comma-dangle": "off", // Enforce spacing before and after comma "comma-spacing": ["error", {"before": false, "after": true}], // Enforce one true comma style. "comma-style": ["error", "last"], // Warn about cyclomatic complexity in functions. "complexity": ["error", 35], // Require return statements to either always or never specify values. "consistent-return": "error", // Don't warn for inconsistent naming when capturing this (not so important // with auto-binding fat arrow functions). "consistent-this": "off", // Enforce curly brace conventions for all control statements. "curly": "error", // Don't require a default case in switch statements. Avoid being forced to // add a bogus default when you know all possible cases are handled. "default-case": "off", // Enforce dots on the next line with property name. "dot-location": ["error", "property"], // Encourage the use of dot notation whenever possible. "dot-notation": "error", // Enforce newline at the end of file, with no multiple empty lines. "eol-last": "error", // Allow using == instead of ===, in the interest of landing something since // the devtools codebase is split on convention here. "eqeqeq": "off", // Don't require function expressions to have a name. // This makes the code more verbose and hard to read. Our engine already // does a fantastic job assigning a name to the function, which includes // the enclosing function name, and worst case you have a line number that // you can just look up. "func-names": "off", // Allow use of function declarations and expressions. "func-style": "off", // Deprecated, will be removed in 1.0. "generator-star": "off", // Enforce the spacing around the * in generator functions. "generator-star-spacing": ["error", "after"], // Deprecated, will be removed in 1.0. "global-strict": "off", // Only useful in a node environment. "handle-callback-err": "off", // Tab width. "indent-legacy": ["error", 2, {"SwitchCase": 1, "ArrayExpression": "first", "ObjectExpression": "first"}], // Enforces spacing between keys and values in object literal properties. "key-spacing": ["error", {"beforeColon": false, "afterColon": true}], // Enforces unix style line breaks. "linebreak-style": ["error", "unix"], // Don't enforce the maximum depth that blocks can be nested. The complexity // rule is a better rule to check this. "max-depth": "off", // Maximum length of a line. "max-len": ["error", 90, 2, { "ignoreUrls": true, "ignorePattern": "data:image\/|\\s*require\\s*\\(|^\\s*loader\\.lazy|-\\*-" }], // Maximum depth callbacks can be nested. "max-nested-callbacks": ["error", 3], // Don't limit the number of parameters that can be used in a function. "max-params": "off", // Don't limit the maximum number of statement allowed in a function. We // already have the complexity rule that's a better measurement. "max-statements": "off", // Require a capital letter for constructors, only check if all new // operators are followed by a capital letter. Don't warn when capitalized // functions are used without the new operator. "new-cap": ["error", {"capIsNew": false}], // Disallow the omission of parentheses when invoking a constructor with no // arguments. "new-parens": "error", // Disallow use of the Array constructor. "no-array-constructor": "error", // Allow use of bitwise operators. "no-bitwise": "off", // Disallow use of arguments.caller or arguments.callee. "no-caller": "error", // Disallow the catch clause parameter name being the same as a variable in // the outer scope, to avoid confusion. "no-catch-shadow": "error", // Deprecated, will be removed in 1.0. "no-comma-dangle": "off", // Disallow assignment in conditional expressions. "no-cond-assign": "error", // Allow using the console API. "no-console": "off", // Allow using constant expressions in conditions like while (true) "no-constant-condition": "off", // Allow use of the continue statement. "no-continue": "off", // Disallow control characters in regular expressions. "no-control-regex": "error", // Disallow use of debugger. "no-debugger": "error", // Disallow deletion of variables (deleting properties is fine). "no-delete-var": "error", // Allow division operators explicitly at beginning of regular expression. "no-div-regex": "off", // Disallow duplicate arguments in functions. "no-dupe-args": "error", // Disallow duplicate keys when creating object literals. "no-dupe-keys": "error", // Disallow a duplicate case label. "no-duplicate-case": "error", // Disallow else after a return in an if. The else around the second return // here is useless: // if (something) { return false; } else { return true; } "no-else-return": "error", // Disallow empty statements. This will report an error for: // try { something(); } catch (e) {} // but will not report it for: // try { something(); } catch (e) { /* Silencing the error because ...*/ } // which is a valid use case. "no-empty": "error", // Disallow the use of empty character classes in regular expressions. "no-empty-character-class": "error", // Disallow use of eval(). We have other APIs to evaluate code in content. "no-eval": "error", // Disallow assigning to the exception in a catch block. "no-ex-assign": "error", // Disallow adding to native types "no-extend-native": "error", // Disallow unnecessary function binding. "no-extra-bind": "error", // Disallow double-negation boolean casts in a boolean context. "no-extra-boolean-cast": "error", // Allow unnecessary parentheses, as they may make the code more readable. "no-extra-parens": "off", // Disallow unnecessary semicolons. "no-extra-semi": "error", // Deprecated, will be removed in 1.0. "no-extra-strict": "off", // Disallow fallthrough of case statements, except if there is a comment. "no-fallthrough": "error", // Allow the use of leading or trailing decimal points in numeric literals. "no-floating-decimal": "off", // disallow use of eval()-like methods "no-implied-eval": "error", // Allow comments inline after code. "no-inline-comments": "off", // Disallow if as the only statement in an else block. "no-lonely-if": "error", // Allow mixing regular variable and require declarations (not a node env). "no-mixed-requires": "off", // Disallow mixed spaces and tabs for indentation. "no-mixed-spaces-and-tabs": "error", // Disallow use of multiple spaces (sometimes used to align const values, // array or object items, etc.). It's hard to maintain and doesn't add that // much benefit. "no-multi-spaces": "error", // Disallow use of multiline strings (use template strings instead). "no-multi-str": "error", // Disallow multiple empty lines. "no-multiple-empty-lines": ["error", {"max": 1}], // Disallow reassignments of native objects. "no-native-reassign": "error", // Disallow nested ternary expressions, they make the code hard to read. "no-nested-ternary": "error", // Allow use of new operator with the require function. "no-new-require": "off", // Disallow use of octal literals. "no-octal": "error", // Allow reassignment of function parameters. "no-param-reassign": "off", // Allow string concatenation with __dirname and __filename (not a node env). "no-path-concat": "off", // Allow use of unary operators, ++ and --. "no-plusplus": "off", // Allow using process.env (not a node environment). "no-process-env": "off", // Allow using process.exit (not a node environment). "no-process-exit": "off", // Disallow usage of __proto__ property. "no-proto": "error", // Disallow declaring the same variable more than once (we use let anyway). "no-redeclare": "error", // Disallow multiple spaces in a regular expression literal. "no-regex-spaces": "off", // Allow reserved words being used as object literal keys. "no-reserved-keys": "off", // Don't restrict usage of specified node modules (not a node environment). "no-restricted-modules": "off", // Disallow use of assignment in return statement. It is preferable for a // single line of code to have only one easily predictable effect. "no-return-assign": "error", // Allow use of javascript: urls. "no-script-url": "off", // Disallow assignments like foo = foo "no-self-assign": "error", // Disallow comparisons where both sides are exactly the same. "no-self-compare": "error", // Disallow use of comma operator. "no-sequences": "error", // Warn about declaration of variables already declared in the outer scope. // This isn't an error because it sometimes is useful to use the same name // in a small helper function rather than having to come up with another // random name. // Still, making this a warning can help people avoid being confused. "no-shadow": "error", // Disallow shadowing of names such as arguments. "no-shadow-restricted-names": "error", // Deprecated, will be removed in 1.0. "no-space-before-semi": "off", // Disallow space between function identifier and application. "no-spaced-func": "error", // Disallow sparse arrays, eg. let arr = [,,2]. // Array destructuring is fine though: // for (let [, breakpointPromise] of aPromises) "no-sparse-arrays": "error", // Allow use of synchronous methods (not a node environment). "no-sync": "off", // Allow the use of ternary operators. "no-ternary": "off", // Disallow throwing literals (eg. throw "error" instead of // throw new Error("error")). "no-throw-literal": "error", // Disallow trailing whitespace at the end of lines. "no-trailing-spaces": "error", // Disallow use of undeclared variables unless mentioned in a /*global */ // block. Note that globals from head.js are automatically imported in tests // by the import-headjs-globals rule form the mozilla eslint plugin. "no-undef": "error", // Allow dangling underscores in identifiers (for privates). "no-underscore-dangle": "off", // Allow use of undefined variable. "no-undefined": "off", // Disallow the use of Boolean literals in conditional expressions. "no-unneeded-ternary": "error", // Disallow unreachable statements after a return, throw, continue, or break // statement. "no-unreachable": "error", // Disallow global and local variables that aren't used, but allow unused // function arguments. "no-unused-vars": ["error", {"vars": "all", "args": "none"}], // Disallow flow control that escapes from "finally". "no-unsafe-finally": "error", // Allow using variables before they are defined. "no-use-before-define": "off", // Disallow useless Function.prototype.{call/apply} "no-useless-call": "error", // Disallow useless return; "no-useless-return": "error", // We use var-only-at-top-level instead of no-var as we allow top level // vars. "no-var": "off", // Allow using TODO/FIXME comments. "no-warning-comments": "off", // Disallow use of the with statement. "no-with": "error", // Don't require method and property shorthand syntax for object literals. // We use this in the code a lot, but not consistently, and this seems more // like something to check at code review time. "object-shorthand": "off", // Allow more than one variable declaration per function. "one-var": "off", // Disallow padding within blocks. "padded-blocks": ["error", "never"], // Don't require quotes around object literal property names. "quote-props": "off", // Double quotes should be used. Other quote characters can be used around strings // with embedded double quotes to avoid escaping them. Template literals are allowed // mainly for building multi-line messages where only some lines use substitution. "quotes": ["error", "double", {"avoidEscape": true, "allowTemplateLiterals": true}], // Require use of the second argument for parseInt(). "radix": "error", // Always require use of semicolons wherever they are valid. "semi": ["error", "always"], // Enforce spacing after semicolons. "semi-spacing": ["error", {"before": false, "after": true}], // Don't require to sort variables within the same declaration block. // Anyway, one-var is disabled. "sort-vars": "off", // Deprecated, will be removed in 1.0. "space-after-function-name": "off", // Require a space around all keywords. "keyword-spacing": "error", // Require a space before the start brace of a block. "space-before-blocks": ["error", "always"], // Deprecated, will be removed in 1.0. "space-before-function-parentheses": "off", // Require space after keyword for anonymous functions, but disallow space // after name of named functions. "space-before-function-paren": ["error", {"anonymous": "always", "named": "never"}], // Disable the rule that checks if spaces inside {} and [] are there or not. // Our code is split on conventions, and it'd be nice to have "error" rules // instead, one for [] and one for {}. So, disabling until we write them. "space-in-brackets": "off", // Disallow spaces inside parentheses. "space-in-parens": ["error", "never"], // Require spaces around operators, except for a|"off". "space-infix-ops": ["error", {"int32Hint": true}], // Require spaces before/after unary operators (words on by default, // nonwords off by default). "space-unary-ops": ["error", { "words": true, "nonwords": false }], // Deprecated, will be removed in 1.0. "space-unary-word-ops": "off", // Require a space immediately following the // in a line comment. "spaced-comment": ["error", "always"], // Require "use strict" to be defined globally in the script. "strict": ["error", "global"], // Disallow comparisons with the value NaN. "use-isnan": "error", // Warn about invalid JSDoc comments. // Disabled for now because of https://github.com/eslint/eslint/issues/2270 // The rule fails on some jsdoc comments like in: // devtools/client/webconsole/console-output.js "valid-jsdoc": "off", // Ensure that the results of typeof are compared against a valid string. "valid-typeof": "error", // Allow vars to be declared anywhere in the scope. "vars-on-top": "off", // Don't require immediate function invocation to be wrapped in parentheses. "wrap-iife": "off", // Don't require regex literals to be wrapped in parentheses (which // supposedly prevent them from being mistaken for division operators). "wrap-regex": "off", // Disallow Yoda conditions (where literal value comes first). "yoda": "error", // And these are the rules that haven't been discussed so far, and that are // disabled for now until we introduce them, one at a time. // enforce consistent spacing before and after the arrow in arrow functions "arrow-spacing": "off", // enforce consistent spacing inside computed property brackets "computed-property-spacing": "off", // Require for-in loops to have an if statement. "guard-for-in": "off", // allow/disallow an empty newline after var statement "newline-after-var": "off", // disallow the use of alert, confirm, and prompt "no-alert": "off", // disallow comparisons to null without a type-checking operator "no-eq-null": "off", // disallow overwriting functions written as function declarations "no-func-assign": "off", // disallow function or variable declarations in nested blocks "no-inner-declarations": "off", // disallow invalid regular expression strings in the RegExp constructor "no-invalid-regexp": "off", // disallow irregular whitespace outside of strings and comments "no-irregular-whitespace": "off", // disallow usage of __iterator__ property "no-iterator": "off", // disallow labels that share a name with a variable "no-label-var": "off", // disallow use of labeled statements "no-labels": "error", // disallow unnecessary nested blocks "no-lone-blocks": "off", // disallow creation of functions within loops "no-loop-func": "off", // disallow negation of the left operand of an in expression "no-negated-in-lhs": "off", // disallow use of new operator when not part of the assignment or // comparison "no-new": "off", // disallow use of new operator for Function object "no-new-func": "off", // disallow use of the Object constructor "no-new-object": "off", // disallows creating new instances of String,Number, and Boolean "no-new-wrappers": "off", // disallow the use of object properties of the global object (Math and // JSON) as functions "no-obj-calls": "off", // disallow use of octal escape sequences in string literals, such as // var foo = "Copyright \251"; "no-octal-escape": "off", // disallow use of undefined when initializing variables "no-undef-init": "off", // disallow usage of expressions in statement position "no-unused-expressions": "off", // disallow unnecessary concatenation of literals or template literals "no-useless-concat": "off", // disallow use of void operator "no-void": "off", // disallow wrapping of non-IIFE statements in parens "no-wrap-func": "off", // require assignment operator shorthand where possible or prohibit it // entirely "operator-assignment": "off", // enforce operators to be placed before or after line breaks "operator-linebreak": "off", } };