{ "globals": { "Cc": true, "Ci": true, "Components": true, "console": true, "Cr": true, "Cu": true, "devtools": true, "dump": true, "EventEmitter": true, "exports": true, "loader": true, "module": true, "require": true, "Services": true, "Task": true, "XPCNativeWrapper": true, "XPCOMUtils": true, }, "rules": { // These are the rules that have been configured so far to match the // devtools coding style. // Rules from the mozilla plugin "mozilla/balanced-listeners": 2, "mozilla/components-imports": 1, "mozilla/import-globals-from": 1, "mozilla/import-headjs-globals": 1, "mozilla/mark-test-function-used": 1, "mozilla/no-aArgs": 1, "mozilla/no-cpows-in-tests": 1, "mozilla/var-only-at-top-level": 1, // Disallow using variables outside the blocks they are defined (especially // since only let and const are used, see "no-var"). "block-scoped-var": 2, // Enforce one true brace style (opening brace on the same line) and avoid // start and end braces on the same line. "brace-style": [1, "1tbs", {"allowSingleLine": false}], // Require camel case names "camelcase": 1, // Allow trailing commas for easy list extension. Having them does not // impair readability, but also not required either. "comma-dangle": 0, // Enforce spacing before and after comma "comma-spacing": [1, {"before": false, "after": true}], // Enforce one true comma style. "comma-style": [1, "last"], // Warn about cyclomatic complexity in functions. "complexity": 1, // Require return statements to either always or never specify values. "consistent-return": 2, // Don't warn for inconsistent naming when capturing this (not so important // with auto-binding fat arrow functions). "consistent-this": 0, // Enforce curly brace conventions for all control statements. "curly": 2, // 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": 0, // Enforce dots on the next line with property name. "dot-location": [1, "property"], // Encourage the use of dot notation whenever possible. "dot-notation": 2, // Enforce newline at the end of file, with no multiple empty lines. "eol-last": 2, // Allow using == instead of ===, in the interest of landing something since // the devtools codebase is split on convention here. "eqeqeq": 0, // 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": 0, // Allow use of function declarations and expressions. "func-style": 0, // Deprecated, will be removed in 1.0. "generator-star": 0, // Enforce the spacing around the * in generator functions. "generator-star-spacing": [1, "after"], // Deprecated, will be removed in 1.0. "global-strict": 0, // Only useful in a node environment. "handle-callback-err": 0, // Tab width. "indent": [1, 2, {"SwitchCase": 1}], // Enforces spacing between keys and values in object literal properties. "key-spacing": [1, {"beforeColon": false, "afterColon": true}], // Allow mixed 'LF' and 'CRLF' as linebreaks. "linebreak-style": 0, // Don't enforce the maximum depth that blocks can be nested. The complexity // rule is a better rule to check this. "max-depth": 0, // Maximum length of a line. "max-len": [1, 80], // Maximum depth callbacks can be nested. "max-nested-callbacks": [2, 3], // Don't limit the number of parameters that can be used in a function. "max-params": 0, // 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": 0, // 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": [2, {"capIsNew": false}], // Disallow the omission of parentheses when invoking a constructor with no // arguments. "new-parens": 2, // Disallow use of the Array constructor. "no-array-constructor": 2, // Allow use of bitwise operators. "no-bitwise": 0, // Disallow use of arguments.caller or arguments.callee. "no-caller": 2, // Disallow the catch clause parameter name being the same as a variable in // the outer scope, to avoid confusion. "no-catch-shadow": 1, // Deprecated, will be removed in 1.0. "no-comma-dangle": 0, // Disallow assignment in conditional expressions. "no-cond-assign": 2, // Allow using the console API. "no-console": 0, // Allow using constant expressions in conditions like while (true) "no-constant-condition": 0, // Allow use of the continue statement. "no-continue": 0, // Disallow control characters in regular expressions. "no-control-regex": 2, // Disallow use of debugger. "no-debugger": 2, // Disallow deletion of variables (deleting properties is fine). "no-delete-var": 2, // Allow division operators explicitly at beginning of regular expression. "no-div-regex": 0, // Disallow duplicate arguments in functions. "no-dupe-args": 2, // Disallow duplicate keys when creating object literals. "no-dupe-keys": 2, // Disallow a duplicate case label. "no-duplicate-case": 2, // 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": 2, // 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": 2, // Disallow the use of empty character classes in regular expressions. "no-empty-character-class": 2, // Disallow use of labels for anything other then loops and switches. "no-empty-label": 2, // Disallow use of eval(). We have other APIs to evaluate code in content. "no-eval": 2, // Disallow assigning to the exception in a catch block. "no-ex-assign": 2, // Disallow adding to native types "no-extend-native": 2, // Disallow unnecessary function binding. "no-extra-bind": 2, // Disallow double-negation boolean casts in a boolean context. "no-extra-boolean-cast": 2, // Allow unnecessary parentheses, as they may make the code more readable. "no-extra-parens": 0, // Disallow unnecessary semicolons. "no-extra-semi": 1, // Deprecated, will be removed in 1.0. "no-extra-strict": 0, // Disallow fallthrough of case statements, except if there is a comment. "no-fallthrough": 2, // Allow the use of leading or trailing decimal points in numeric literals. "no-floating-decimal": 0, // Disallow comments inline after code. "no-inline-comments": 1, // Disallow if as the only statement in an else block. "no-lonely-if": 2, // Allow mixing regular variable and require declarations (not a node env). "no-mixed-requires": 0, // Disallow mixed spaces and tabs for indentation. "no-mixed-spaces-and-tabs": 2, // 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": 1, // Disallow use of multiline strings (use template strings instead). "no-multi-str": 1, // Disallow multiple empty lines. "no-multiple-empty-lines": [1, {"max": 1}], // Disallow reassignments of native objects. "no-native-reassign": 2, // Disallow nested ternary expressions, they make the code hard to read. "no-nested-ternary": 2, // Allow use of new operator with the require function. "no-new-require": 0, // Disallow use of octal literals. "no-octal": 1, // Allow reassignment of function parameters. "no-param-reassign": 0, // Allow string concatenation with __dirname and __filename (not a node env). "no-path-concat": 0, // Allow use of unary operators, ++ and --. "no-plusplus": 0, // Allow using process.env (not a node environment). "no-process-env": 0, // Allow using process.exit (not a node environment). "no-process-exit": 0, // Disallow usage of __proto__ property. "no-proto": 2, // Disallow declaring the same variable more than once (we use let anyway). "no-redeclare": 2, // Disallow multiple spaces in a regular expression literal. "no-regex-spaces": 2, // Allow reserved words being used as object literal keys. "no-reserved-keys": 0, // Don't restrict usage of specified node modules (not a node environment). "no-restricted-modules": 0, // 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": 2, // Allow use of javascript: urls. "no-script-url": 0, // Disallow comparisons where both sides are exactly the same. "no-self-compare": 2, // Disallow use of comma operator. "no-sequences": 2, // 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": 1, // Disallow shadowing of names such as arguments. "no-shadow-restricted-names": 2, // Deprecated, will be removed in 1.0. "no-space-before-semi": 0, // Disallow space between function identifier and application. "no-spaced-func": 1, // Disallow sparse arrays, eg. let arr = [,,2]. // Array destructuring is fine though: // for (let [, breakpointPromise] of aPromises) "no-sparse-arrays": 2, // Allow use of synchronous methods (not a node environment). "no-sync": 0, // Allow the use of ternary operators. "no-ternary": 0, // Disallow throwing literals (eg. throw "error" instead of // throw new Error("error")). "no-throw-literal": 2, // Disallow trailing whitespace at the end of lines. "no-trailing-spaces": 2, // 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": 2, // Allow dangling underscores in identifiers (for privates). "no-underscore-dangle": 0, // Allow use of undefined variable. "no-undefined": 0, // Disallow the use of Boolean literals in conditional expressions. "no-unneeded-ternary": 2, // Disallow unreachable statements after a return, throw, continue, or break // statement. "no-unreachable": 2, // Disallow declaration of variables that are not used in the code "no-unused-vars": 2, // Allow using variables before they are defined. "no-use-before-define": 0, // We use var-only-at-top-level instead of no-var as we allow top level // vars. "no-var": 0, // Allow using TODO/FIXME comments. "no-warning-comments": 0, // Disallow use of the with statement. "no-with": 2, // 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": 0, // Allow more than one variable declaration per function. "one-var": 0, // Disallow padding within blocks. "padded-blocks": [1, "never"], // Don't require quotes around object literal property names. "quote-props": 0, // Double quotes should be used. "quotes": [1, "double", "avoid-escape"], // Require use of the second argument for parseInt(). "radix": 2, // Always require use of semicolons wherever they are valid. "semi": [1, "always"], // Enforce spacing after semicolons. "semi-spacing": [1, {"before": false, "after": true}], // Don't require to sort variables within the same declaration block. // Anyway, one-var is disabled. "sort-vars": 0, // Deprecated, will be removed in 1.0. "space-after-function-name": 0, // Require a space after keywords. "space-after-keywords": [1, "always"], // Deprecated, will be removed in 1.0. "space-after-function-name": 0, // Require a space before the start brace of a block. "space-before-blocks": [1, "always"], // Deprecated, will be removed in 1.0. "space-before-function-parentheses": 0, // Disallow space before function opening parenthesis. "space-before-function-paren": [1, "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 2 rules // instead, one for [] and one for {}. So, disabling until we write them. "space-in-brackets": 0, // Disallow spaces inside parentheses. "space-in-parens": [1, "never"], // Require spaces around operators, except for a|0. "space-infix-ops": [1, {"int32Hint": true}], // Require a space after return, throw, and case. "space-return-throw-case": 1, // Require spaces before/after unary operators (words on by default, // nonwords off by default). "space-unary-ops": [1, { "words": true, "nonwords": false }], // Deprecated, will be removed in 1.0. "space-unary-word-ops": 0, // Require a space immediately following the // in a line comment. "spaced-comment": [1, "always"], // Require "use strict" to be defined globally in the script. "strict": [2, "global"], // Disallow comparisons with the value NaN. "use-isnan": 2, // 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": 0, // Ensure that the results of typeof are compared against a valid string. "valid-typeof": 2, // Allow vars to be declared anywhere in the scope. "vars-on-top": 0, // Don't require immediate function invocation to be wrapped in parentheses. "wrap-iife": 0, // Don't require regex literals to be wrapped in parentheses (which // supposedly prevent them from being mistaken for division operators). "wrap-regex": 0, // Disallow Yoda conditions (where literal value comes first). "yoda": 2, // 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. // Require for-in loops to have an if statement. "guard-for-in": 0, // allow/disallow an empty newline after var statement "newline-after-var": 0, // disallow the use of alert, confirm, and prompt "no-alert": 0, // disallow comparisons to null without a type-checking operator "no-eq-null": 0, // disallow overwriting functions written as function declarations "no-func-assign": 0, // disallow use of eval()-like methods "no-implied-eval": 0, // disallow function or variable declarations in nested blocks "no-inner-declarations": 0, // disallow invalid regular expression strings in the RegExp constructor "no-invalid-regexp": 0, // disallow irregular whitespace outside of strings and comments "no-irregular-whitespace": 0, // disallow usage of __iterator__ property "no-iterator": 0, // disallow labels that share a name with a variable "no-label-var": 0, // disallow use of labeled statements "no-labels": 0, // disallow unnecessary nested blocks "no-lone-blocks": 0, // disallow creation of functions within loops "no-loop-func": 0, // disallow negation of the left operand of an in expression "no-negated-in-lhs": 0, // disallow use of new operator when not part of the assignment or // comparison "no-new": 0, // disallow use of new operator for Function object "no-new-func": 0, // disallow use of the Object constructor "no-new-object": 0, // disallows creating new instances of String,Number, and Boolean "no-new-wrappers": 0, // disallow the use of object properties of the global object (Math and // JSON) as functions "no-obj-calls": 0, // disallow use of octal escape sequences in string literals, such as // var foo = "Copyright \251"; "no-octal-escape": 0, // disallow use of undefined when initializing variables "no-undef-init": 0, // disallow usage of expressions in statement position "no-unused-expressions": 0, // disallow use of void operator "no-void": 0, // disallow wrapping of non-IIFE statements in parens "no-wrap-func": 0, // require assignment operator shorthand where possible or prohibit it // entirely "operator-assignment": 0, // enforce operators to be placed before or after line breaks "operator-linebreak": 0, } }