diff options
Diffstat (limited to 'tools/lint/eslint/eslint-plugin-mozilla')
93 files changed, 10139 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/.npmignore b/tools/lint/eslint/eslint-plugin-mozilla/.npmignore new file mode 100644 index 0000000000..3713448c7a --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/.npmignore @@ -0,0 +1,8 @@ +.eslintrc.js +.npmignore +node_modules +reporters +scripts +tests +package-lock.json +update.sh diff --git a/tools/lint/eslint/eslint-plugin-mozilla/LICENSE b/tools/lint/eslint/eslint-plugin-mozilla/LICENSE new file mode 100644 index 0000000000..e87a115e46 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/LICENSE @@ -0,0 +1,363 @@ +Mozilla Public License, version 2.0 + +1. Definitions + +1.1. "Contributor" + + means each individual or legal entity that creates, contributes to the + creation of, or owns Covered Software. + +1.2. "Contributor Version" + + means the combination of the Contributions of others (if any) used by a + Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + + means Source Code Form to which the initial Contributor has attached the + notice in Exhibit A, the Executable Form of such Source Code Form, and + Modifications of such Source Code Form, in each case including portions + thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + a. that the initial Contributor has attached the notice described in + Exhibit B to the Covered Software; or + + b. that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the terms of + a Secondary License. + +1.6. "Executable Form" + + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + + means a work that combines Covered Software with other material, in a + separate file or files, that is not Covered Software. + +1.8. "License" + + means this document. + +1.9. "Licensable" + + means having the right to grant, to the maximum extent possible, whether + at the time of the initial grant or subsequently, any and all of the + rights conveyed by this License. + +1.10. "Modifications" + + means any of the following: + + a. any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered Software; or + + b. any new file in Source Code Form that contains any Covered Software. + +1.11. "Patent Claims" of a Contributor + + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the License, + by the making, using, selling, offering for sale, having made, import, + or transfer of either its Contributions or its Contributor Version. + +1.12. "Secondary License" + + means either the GNU General Public License, Version 2.0, the GNU Lesser + General Public License, Version 2.1, the GNU Affero General Public + License, Version 3.0, or any later versions of those licenses. + +1.13. "Source Code Form" + + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that controls, is + controlled by, or is under common control with You. For purposes of this + definition, "control" means (a) the power, direct or indirect, to cause + the direction or management of such entity, whether by contract or + otherwise, or (b) ownership of more than fifty percent (50%) of the + outstanding shares or beneficial ownership of such entity. + + +2. License Grants and Conditions + +2.1. Grants + + Each Contributor hereby grants You a world-wide, royalty-free, + non-exclusive license: + + a. under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + + b. under Patent Claims of such Contributor to make, use, sell, offer for + sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + + The licenses granted in Section 2.1 with respect to any Contribution + become effective for each Contribution on the date the Contributor first + distributes such Contribution. + +2.3. Limitations on Grant Scope + + The licenses granted in this Section 2 are the only rights granted under + this License. No additional rights or licenses will be implied from the + distribution or licensing of Covered Software under this License. + Notwithstanding Section 2.1(b) above, no patent license is granted by a + Contributor: + + a. for any code that a Contributor has removed from Covered Software; or + + b. for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + + c. under Patent Claims infringed by Covered Software in the absence of + its Contributions. + + This License does not grant any rights in the trademarks, service marks, + or logos of any Contributor (except as may be necessary to comply with + the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + + No Contributor makes additional grants as a result of Your choice to + distribute the Covered Software under a subsequent version of this + License (see Section 10.2) or under the terms of a Secondary License (if + permitted under the terms of Section 3.3). + +2.5. Representation + + Each Contributor represents that the Contributor believes its + Contributions are its original creation(s) or it has sufficient rights to + grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + + This License is not intended to limit any rights You have under + applicable copyright doctrines of fair use, fair dealing, or other + equivalents. + +2.7. Conditions + + Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in + Section 2.1. + + +3. Responsibilities + +3.1. Distribution of Source Form + + All distribution of Covered Software in Source Code Form, including any + Modifications that You create or to which You contribute, must be under + the terms of this License. You must inform recipients that the Source + Code Form of the Covered Software is governed by the terms of this + License, and how they can obtain a copy of this License. You may not + attempt to alter or restrict the recipients' rights in the Source Code + Form. + +3.2. Distribution of Executable Form + + If You distribute Covered Software in Executable Form then: + + a. such Covered Software must also be made available in Source Code Form, + as described in Section 3.1, and You must inform recipients of the + Executable Form how they can obtain a copy of such Source Code Form by + reasonable means in a timely manner, at a charge no more than the cost + of distribution to the recipient; and + + b. You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter the + recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + + You may create and distribute a Larger Work under terms of Your choice, + provided that You also comply with the requirements of this License for + the Covered Software. If the Larger Work is a combination of Covered + Software with a work governed by one or more Secondary Licenses, and the + Covered Software is not Incompatible With Secondary Licenses, this + License permits You to additionally distribute such Covered Software + under the terms of such Secondary License(s), so that the recipient of + the Larger Work may, at their option, further distribute the Covered + Software under the terms of either this License or such Secondary + License(s). + +3.4. Notices + + You may not remove or alter the substance of any license notices + (including copyright notices, patent notices, disclaimers of warranty, or + limitations of liability) contained within the Source Code Form of the + Covered Software, except that You may alter any license notices to the + extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + + You may choose to offer, and to charge a fee for, warranty, support, + indemnity or liability obligations to one or more recipients of Covered + Software. However, You may do so only on Your own behalf, and not on + behalf of any Contributor. You must make it absolutely clear that any + such warranty, support, indemnity, or liability obligation is offered by + You alone, and You hereby agree to indemnify every Contributor for any + liability incurred by such Contributor as a result of warranty, support, + indemnity or liability terms You offer. You may include additional + disclaimers of warranty and limitations of liability specific to any + jurisdiction. + +4. Inability to Comply Due to Statute or Regulation + + If it is impossible for You to comply with any of the terms of this License + with respect to some or all of the Covered Software due to statute, + judicial order, or regulation then You must: (a) comply with the terms of + this License to the maximum extent possible; and (b) describe the + limitations and the code they affect. Such description must be placed in a + text file included with all distributions of the Covered Software under + this License. Except to the extent prohibited by statute or regulation, + such description must be sufficiently detailed for a recipient of ordinary + skill to be able to understand it. + +5. Termination + +5.1. The rights granted under this License will terminate automatically if You + fail to comply with any of its terms. However, if You become compliant, + then the rights granted under this License from a particular Contributor + are reinstated (a) provisionally, unless and until such Contributor + explicitly and finally terminates Your grants, and (b) on an ongoing + basis, if such Contributor fails to notify You of the non-compliance by + some reasonable means prior to 60 days after You have come back into + compliance. Moreover, Your grants from a particular Contributor are + reinstated on an ongoing basis if such Contributor notifies You of the + non-compliance by some reasonable means, this is the first time You have + received notice of non-compliance with this License from such + Contributor, and You become compliant prior to 30 days after Your receipt + of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent + infringement claim (excluding declaratory judgment actions, + counter-claims, and cross-claims) alleging that a Contributor Version + directly or indirectly infringes any patent, then the rights granted to + You by any and all Contributors for the Covered Software under Section + 2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user + license agreements (excluding distributors and resellers) which have been + validly granted by You or Your distributors under this License prior to + termination shall survive termination. + +6. Disclaimer of Warranty + + Covered Software is provided under this License on an "as is" basis, + without warranty of any kind, either expressed, implied, or statutory, + including, without limitation, warranties that the Covered Software is free + of defects, merchantable, fit for a particular purpose or non-infringing. + The entire risk as to the quality and performance of the Covered Software + is with You. Should any Covered Software prove defective in any respect, + You (not any Contributor) assume the cost of any necessary servicing, + repair, or correction. This disclaimer of warranty constitutes an essential + part of this License. No use of any Covered Software is authorized under + this License except under this disclaimer. + +7. Limitation of Liability + + Under no circumstances and under no legal theory, whether tort (including + negligence), contract, or otherwise, shall any Contributor, or anyone who + distributes Covered Software as permitted above, be liable to You for any + direct, indirect, special, incidental, or consequential damages of any + character including, without limitation, damages for lost profits, loss of + goodwill, work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses, even if such party shall have been + informed of the possibility of such damages. This limitation of liability + shall not apply to liability for death or personal injury resulting from + such party's negligence to the extent applicable law prohibits such + limitation. Some jurisdictions do not allow the exclusion or limitation of + incidental or consequential damages, so this exclusion and limitation may + not apply to You. + +8. Litigation + + Any litigation relating to this License may be brought only in the courts + of a jurisdiction where the defendant maintains its principal place of + business and such litigation shall be governed by laws of that + jurisdiction, without reference to its conflict-of-law provisions. Nothing + in this Section shall prevent a party's ability to bring cross-claims or + counter-claims. + +9. Miscellaneous + + This License represents the complete agreement concerning the subject + matter hereof. If any provision of this License is held to be + unenforceable, such provision shall be reformed only to the extent + necessary to make it enforceable. Any law or regulation which provides that + the language of a contract shall be construed against the drafter shall not + be used to construe this License against a Contributor. + + +10. Versions of the License + +10.1. New Versions + + Mozilla Foundation is the license steward. Except as provided in Section + 10.3, no one other than the license steward has the right to modify or + publish new versions of this License. Each version will be given a + distinguishing version number. + +10.2. Effect of New Versions + + You may distribute the Covered Software under the terms of the version + of the License under which You originally received the Covered Software, + or under the terms of any subsequent version published by the license + steward. + +10.3. Modified Versions + + If you create software not governed by this License, and you want to + create a new license for such software, you may create and use a + modified version of this License if you rename the license and remove + any references to the name of the license steward (except to note that + such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary + Licenses If You choose to distribute Source Code Form that is + Incompatible With Secondary Licenses under the terms of this version of + the License, the notice described in Exhibit B of this License must be + attached. + +Exhibit A - Source Code Form License Notice + + This Source Code Form is subject to the + terms of the Mozilla Public License, v. + 2.0. If a copy of the MPL was not + distributed with this file, You can + obtain one at + http://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular file, +then You may include the notice in a location (such as a LICENSE file in a +relevant directory) where a recipient would be likely to look for such a +notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice + + This Source Code Form is "Incompatible + With Secondary Licenses", as defined by + the Mozilla Public License, v. 2.0. + diff --git a/tools/lint/eslint/eslint-plugin-mozilla/README.md b/tools/lint/eslint/eslint-plugin-mozilla/README.md new file mode 100644 index 0000000000..650507754e --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/README.md @@ -0,0 +1,56 @@ +# eslint-plugin-mozilla + +A collection of rules that help enforce JavaScript coding standard in the Mozilla project. + +These are primarily developed and used within the Firefox build system ([mozilla-central](https://hg.mozilla.org/mozilla-central/)), but are made available for other +related projects to use as well. + +## Installation + +### Within mozilla-central: + +``` +$ ./mach eslint --setup +``` + +### Outside mozilla-central: + +Install ESLint [ESLint](http://eslint.org): + +``` +$ npm i eslint --save-dev +``` + +Next, install `eslint-plugin-mozilla`: + +``` +$ npm install eslint-plugin-mozilla --save-dev +``` + +## Documentation + +For details about the rules, please see the [firefox documentation page](http://firefox-source-docs.mozilla.org/tools/lint/linters/eslint-plugin-mozilla.html). + +## Source Code + +The sources can be found at: + +* Code: https://searchfox.org/mozilla-central/source/tools/lint/eslint/eslint-plugin-mozilla +* Documentation: https://searchfox.org/mozilla-central/source/docs/code-quality/lint/linters + +## Bugs + +Please file bugs in Bugzilla in the Lint component of the Testing product. + +* [Existing bugs](https://bugzilla.mozilla.org/buglist.cgi?resolution=---&query_format=advanced&component=Lint&product=Testing) +* [New bugs](https://bugzilla.mozilla.org/enter_bug.cgi?product=Testing&component=Lint) + +## Tests + +The tests can only be run from within mozilla-central. To run the tests: + +``` +./mach eslint --setup +cd tools/lint/eslint/eslint-plugin-mozilla +npm run test +``` diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/.eslintrc.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/.eslintrc.js new file mode 100644 index 0000000000..76df4134f5 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/.eslintrc.js @@ -0,0 +1,8 @@ +"use strict"; + +module.exports = { + rules: { + // Require object keys to be sorted. + "sort-keys": "error", + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/browser-test.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/browser-test.js new file mode 100644 index 0000000000..596815c850 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/browser-test.js @@ -0,0 +1,64 @@ +// Parent config file for all browser-chrome files. +"use strict"; + +module.exports = { + env: { + browser: true, + "mozilla/browser-window": true, + "mozilla/simpletest": true, + // "node": true + }, + + // All globals made available in the test environment. + globals: { + // `$` is defined in SimpleTest.js + $: false, + Assert: false, + BrowserTestUtils: false, + ContentTask: false, + ContentTaskUtils: false, + EventUtils: false, + PromiseDebugging: false, + SpecialPowers: false, + TestUtils: false, + XPCNativeWrapper: false, + addLoadEvent: false, + add_task: false, + content: false, + executeSoon: false, + expectUncaughtException: false, + export_assertions: false, + extractJarToTmp: false, + finish: false, + gTestPath: false, + getChromeDir: false, + getJar: false, + getResolvedURI: false, + getRootDirectory: false, + getTestFilePath: false, + ignoreAllUncaughtExceptions: false, + info: false, + is: false, + isnot: false, + ok: false, + record: false, + registerCleanupFunction: false, + requestLongerTimeout: false, + setExpectedFailuresForSelfTest: false, + todo: false, + todo_is: false, + todo_isnot: false, + waitForClipboard: false, + waitForExplicitFinish: false, + waitForFocus: false, + }, + + plugins: ["mozilla"], + + rules: { + "mozilla/import-content-task-globals": "error", + "mozilla/import-headjs-globals": "error", + "mozilla/mark-test-function-used": "error", + "mozilla/no-arbitrary-setTimeout": "error", + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/chrome-test.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/chrome-test.js new file mode 100644 index 0000000000..d097f8ebdf --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/chrome-test.js @@ -0,0 +1,40 @@ +// Parent config file for all mochitest files. +"use strict"; + +module.exports = { + env: { + browser: true, + "mozilla/browser-window": true, + }, + + // All globals made available in the test environment. + globals: { + // SpecialPowers is injected into the window object via SimpleTest.js + SpecialPowers: false, + extractJarToTmp: false, + getChromeDir: false, + getJar: false, + getResolvedURI: false, + getRootDirectory: false, + }, + + overrides: [ + { + env: { + // Ideally we wouldn't be using the simpletest env here, but our uses of + // js files mean we pick up everything from the global scope, which could + // be any one of a number of html files. So we just allow the basics... + "mozilla/simpletest": true, + }, + files: ["*.js"], + }, + ], + + plugins: ["mozilla"], + + rules: { + "mozilla/import-content-task-globals": "error", + "mozilla/import-headjs-globals": "error", + "mozilla/mark-test-function-used": "error", + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/mochitest-test.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/mochitest-test.js new file mode 100644 index 0000000000..af71955a4b --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/mochitest-test.js @@ -0,0 +1,39 @@ +// Parent config file for all mochitest files. +"use strict"; + +module.exports = { + env: { + browser: true, + }, + + // All globals made available in the test environment. + globals: { + // SpecialPowers is injected into the window object via SimpleTest.js + SpecialPowers: false, + XPCNativeWrapper: false, + }, + + overrides: [ + { + env: { + // Ideally we wouldn't be using the simpletest env here, but our uses of + // js files mean we pick up everything from the global scope, which could + // be any one of a number of html files. So we just allow the basics... + "mozilla/simpletest": true, + }, + files: ["*.js"], + }, + ], + + plugins: ["mozilla"], + + rules: { + "mozilla/import-content-task-globals": "error", + "mozilla/import-headjs-globals": "error", + "mozilla/mark-test-function-used": "error", + // Turn off no-define-cc-etc for mochitests as these don't have Cc etc defined in the + // global scope. + "mozilla/no-define-cc-etc": "off", + "no-shadow": "error", + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/recommended.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/recommended.js new file mode 100644 index 0000000000..72023fd0b9 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/recommended.js @@ -0,0 +1,305 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/** + * The configuration is based on eslint:recommended config. The details for all + * the ESLint rules, and which ones are in the recommended configuration can + * be found here: + * + * https://eslint.org/docs/rules/ + */ +module.exports = { + env: { + browser: true, + es2021: true, + "mozilla/privileged": true, + }, + + extends: ["eslint:recommended", "plugin:prettier/recommended"], + + globals: { + Cc: false, + // Specific to Firefox (Chrome code only). + ChromeUtils: false, + Ci: false, + Components: false, + Cr: false, + Cu: false, + Debugger: false, + InstallTrigger: false, + // Specific to Firefox + // https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/InternalError + InternalError: true, + Intl: false, + SharedArrayBuffer: false, + StopIteration: false, + dump: true, + // Override the "browser" env definition of "location" to allow writing as it + // is a writeable property. + // See https://bugzilla.mozilla.org/show_bug.cgi?id=1509270#c1 for more information. + location: true, + openDialog: false, + saveStack: false, + sizeToContent: false, + // Specific to Firefox + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/uneval + uneval: false, + }, + + overrides: [ + { + // We don't have the general browser environment for jsm files, but we do + // have our own special environments for them. + env: { + browser: false, + "mozilla/jsm": true, + }, + files: ["**/*.jsm", "**/*.jsm.js"], + rules: { + "mozilla/mark-exported-symbols-as-used": "error", + // TODO: Bug 1575506 turn `builtinGlobals` on here. + // We can enable builtinGlobals for jsms due to their scopes. + "no-redeclare": ["error", { builtinGlobals: false }], + // JSM modules are far easier to check for no-unused-vars on a global scope, + // than our content files. Hence we turn that on here. + "no-unused-vars": [ + "error", + { + args: "none", + vars: "all", + }, + ], + }, + }, + ], + + parserOptions: { + ecmaVersion: 12, + }, + + // When adding items to this file please check for effects on sub-directories. + plugins: ["html", "fetch-options", "no-unsanitized"], + + // When adding items to this file please check for effects on all of toolkit + // and browser + rules: { + // Warn about cyclomatic complexity in functions. + // XXX Get this down to 20? + complexity: ["error", 34], + + // Functions must always return something or nothing + "consistent-return": "error", + + // XXX This rule line should be removed to enable it. See bug 1487642. + // Require super() calls in constructors + "constructor-super": "off", + + // Require braces around blocks that start a new line + curly: ["error", "all"], + + // Encourage the use of dot notation whenever possible. + "dot-notation": "error", + + // XXX This rule should be enabled, see Bug 1557040 + // No credentials submitted with fetch calls + "fetch-options/no-fetch-credentials": "off", + + // XXX This rule line should be removed to enable it. See bug 1487642. + // Enforce return statements in getters + "getter-return": "off", + + // 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 depth callbacks can be nested. + "max-nested-callbacks": ["error", 10], + + "mozilla/avoid-removeChild": "error", + "mozilla/consistent-if-bracing": "error", + "mozilla/import-browser-window-globals": "error", + "mozilla/import-globals": "error", + "mozilla/no-compare-against-boolean-literals": "error", + "mozilla/no-define-cc-etc": "error", + "mozilla/no-throw-cr-literal": "error", + "mozilla/no-useless-parameters": "error", + "mozilla/no-useless-removeEventListener": "error", + "mozilla/prefer-boolean-length-check": "error", + "mozilla/prefer-formatValues": "error", + "mozilla/reject-chromeutils-import-null": "error", + "mozilla/reject-importGlobalProperties": ["error", "allownonwebidl"], + "mozilla/rejects-requires-await": "error", + "mozilla/use-cc-etc": "error", + "mozilla/use-chromeutils-generateqi": "error", + "mozilla/use-chromeutils-import": "error", + "mozilla/use-default-preference-values": "error", + "mozilla/use-includes-instead-of-indexOf": "error", + "mozilla/use-ownerGlobal": "error", + "mozilla/use-returnValue": "error", + "mozilla/use-services": "error", + + // Use [] instead of Array() + "no-array-constructor": "error", + + // Disallow use of arguments.caller or arguments.callee. + "no-caller": "error", + + // XXX Bug 1487642 - decide if we want to enable this or not. + // Disallow lexical declarations in case clauses + "no-case-declarations": "off", + + // XXX Bug 1487642 - decide if we want to enable this or not. + // Disallow the use of console + "no-console": "off", + + // XXX Bug 1487642 - decide if we want to enable this or not. + // Disallow constant expressions in conditions + "no-constant-condition": "off", + + // No duplicate keys in object declarations + "no-dupe-keys": "error", + + // If an if block ends with a return no need for an else block + "no-else-return": "error", + + // No empty statements + "no-empty": ["error", { allowEmptyCatch: true }], + + // Disallow eval and setInteral/setTimeout with strings + "no-eval": "error", + + // Disallow unnecessary calls to .bind() + "no-extra-bind": "error", + + // Disallow fallthrough of case statements + "no-fallthrough": [ + "error", + { + // The eslint rule doesn't allow for case-insensitive regex option. + // The following pattern allows for a dash between "fall through" as + // well as alternate spelling of "fall thru". The pattern also allows + // for an optional "s" at the end of "fall" ("falls through"). + commentPattern: + "[Ff][Aa][Ll][Ll][Ss]?[\\s-]?([Tt][Hh][Rr][Oo][Uu][Gg][Hh]|[Tt][Hh][Rr][Uu])", + }, + ], + + // Disallow assignments to native objects or read-only global variables + "no-global-assign": "error", + + // Disallow eval and setInteral/setTimeout with strings + "no-implied-eval": "error", + + // This has been superseded since we're using ES6. + // Disallow variable or function declarations in nested blocks + "no-inner-declarations": "off", + + // Disallow the use of the __iterator__ property + "no-iterator": "error", + + // No labels + "no-labels": "error", + + // Disallow unnecessary nested blocks + "no-lone-blocks": "error", + + // No single if block inside an else block + "no-lonely-if": "error", + + // Nested ternary statements are confusing + "no-nested-ternary": "error", + + // Use {} instead of new Object() + "no-new-object": "error", + + // Disallow use of new wrappers + "no-new-wrappers": "error", + + // We don't want this, see bug 1551829 + "no-prototype-builtins": "off", + + // Disable builtinGlobals for no-redeclare as this conflicts with our + // globals declarations especially for browser window. + "no-redeclare": ["error", { builtinGlobals: false }], + + // Disallow use of event global. + "no-restricted-globals": ["error", "event"], + + // Disallows unnecessary `return await ...`. + "no-return-await": "error", + + // No unnecessary comparisons + "no-self-compare": "error", + + // No comma sequenced statements + "no-sequences": "error", + + // No declaring variables from an outer scope + // "no-shadow": "error", + + // No declaring variables that hide things like arguments + "no-shadow-restricted-names": "error", + + // Disallow throwing literals (eg. throw "error" instead of + // throw new Error("error")). + "no-throw-literal": "error", + + // Disallow the use of Boolean literals in conditional expressions. + "no-unneeded-ternary": "error", + + // No unsanitized use of innerHTML=, document.write() etc. + // cf. https://github.com/mozilla/eslint-plugin-no-unsanitized#rule-details + "no-unsanitized/method": "error", + "no-unsanitized/property": "error", + + // No declaring variables that are never used + "no-unused-vars": [ + "error", + { + args: "none", + vars: "local", + }, + ], + + // No using variables before defined + // "no-use-before-define": ["error", "nofunc"], + + // Disallow unnecessary .call() and .apply() + "no-useless-call": "error", + + // Don't concatenate string literals together (unless they span multiple + // lines) + "no-useless-concat": "error", + + // XXX Bug 1487642 - decide if we want to enable this or not. + // Disallow unnecessary escape characters + "no-useless-escape": "off", + + // Disallow redundant return statements + "no-useless-return": "error", + + // No using with + "no-with": "error", + + // Require object-literal shorthand with ES6 method syntax + "object-shorthand": ["error", "always", { avoidQuotes: true }], + + // This generates too many false positives that are not easy to work around, + // and false positives seem to be inherent in the rule. + "require-atomic-updates": "off", + + // XXX Bug 1487642 - decide if we want to enable this or not. + // Require generator functions to contain yield + "require-yield": "off", + }, + + // To avoid bad interactions of the html plugin with the xml preprocessor in + // eslint-plugin-mozilla, we turn off processing of the html plugin for .xml + // files. + settings: { + "html/xml-extensions": [".xhtml"], + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/xpcshell-test.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/xpcshell-test.js new file mode 100644 index 0000000000..4cff7fcdc3 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/xpcshell-test.js @@ -0,0 +1,35 @@ +// Parent config file for all xpcshell files. +"use strict"; + +module.exports = { + env: { + "mozilla/xpcshell": true, + }, + + overrides: [ + { + // If it is a head file, we turn off global unused variable checks, as it + // would require searching the other test files to know if they are used or not. + // This would be expensive and slow, and it isn't worth it for head files. + // We could get developers to declare as exported, but that doesn't seem worth it. + files: "head*.js", + rules: { + "no-unused-vars": [ + "error", + { + args: "none", + vars: "local", + }, + ], + }, + }, + ], + + rules: { + "mozilla/import-headjs-globals": "error", + "mozilla/mark-test-function-used": "error", + "mozilla/no-arbitrary-setTimeout": "error", + "mozilla/no-useless-run-test": "error", + "no-shadow": "error", + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js new file mode 100644 index 0000000000..76e03f2d49 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js @@ -0,0 +1,108 @@ +/** + * @fileoverview Defines the environment when in the browser.xhtml window. + * Imports many globals from various files. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var fs = require("fs"); +var helpers = require("../helpers"); +var { getScriptGlobals } = require("./utils"); + +// When updating EXTRA_SCRIPTS or MAPPINGS, be sure to also update the +// 'support-files' config in `tools/lint/eslint.yml`. + +// These are scripts not loaded from browser.xhtml or global-scripts.inc +// but via other includes. +const EXTRA_SCRIPTS = [ + "browser/base/content/nsContextMenu.js", + "browser/components/places/content/editBookmark.js", + "browser/components/downloads/content/downloads.js", + "browser/components/downloads/content/indicator.js", + "toolkit/content/customElements.js", + "toolkit/content/editMenuOverlay.js", +]; + +const extraDefinitions = [ + // Via Components.utils, defineModuleGetter, defineLazyModuleGetters or + // defineLazyScriptGetter (and map to + // single) variable. + { name: "XPCOMUtils", writable: false }, + { name: "Task", writable: false }, + { name: "windowGlobalChild", writable: false }, +]; + +// Some files in global-scripts.inc need mapping to specific locations. +const MAPPINGS = { + "printUtils.js": "toolkit/components/printing/content/printUtils.js", + "panelUI.js": "browser/components/customizableui/content/panelUI.js", + "viewSourceUtils.js": + "toolkit/components/viewsource/content/viewSourceUtils.js", + "places-tree.js": "browser/components/places/content/places-tree.js", + "places-menupopup.js": + "browser/components/places/content/places-menupopup.js", +}; + +const globalScriptsRegExp = /^\s*Services.scriptloader.loadSubScript\(\"(.*?)\", this\);$/; + +function getGlobalScriptIncludes(scriptPath) { + let fileData; + try { + fileData = fs.readFileSync(scriptPath, { encoding: "utf8" }); + } catch (ex) { + // The file isn't present, so this isn't an m-c repository. + return null; + } + + fileData = fileData.split("\n"); + + let result = []; + + for (let line of fileData) { + let match = line.match(globalScriptsRegExp); + if (match) { + let sourceFile = match[1] + .replace( + "chrome://browser/content/search/", + "browser/components/search/content/" + ) + .replace("chrome://browser/content/", "browser/base/content/") + .replace("chrome://global/content/", "toolkit/content/"); + + for (let mapping of Object.getOwnPropertyNames(MAPPINGS)) { + if (sourceFile.includes(mapping)) { + sourceFile = MAPPINGS[mapping]; + } + } + + result.push(sourceFile); + } + } + + return result; +} + +function getGlobalScripts() { + let results = []; + for (let scriptPath of helpers.globalScriptPaths) { + results = results.concat(getGlobalScriptIncludes(scriptPath)); + } + return results; +} + +module.exports = getScriptGlobals( + "browser-window", + getGlobalScripts().concat(EXTRA_SCRIPTS), + extraDefinitions, + { + browserjsScripts: getGlobalScripts().concat(EXTRA_SCRIPTS), + } +); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-worker.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-worker.js new file mode 100644 index 0000000000..db5759b26c --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-worker.js @@ -0,0 +1,25 @@ +/** + * @fileoverview Defines the environment for chrome workers. This differs + * from normal workers by the fact that `ctypes` can be accessed + * as well. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +var globals = require("globals"); +var util = require("util"); + +var workerGlobals = util._extend( + { + ctypes: false, + }, + globals.worker +); + +module.exports = { + globals: workerGlobals, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/frame-script.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/frame-script.js new file mode 100644 index 0000000000..5f3cb199af --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/frame-script.js @@ -0,0 +1,43 @@ +/** + * @fileoverview Defines the environment for frame scripts. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +module.exports = { + globals: { + addMessageListener: false, + addWeakMessageListener: false, + atob: false, + btoa: false, + chromeOuterWindowID: false, + content: false, + docShell: false, + processMessageManager: false, + removeMessageListener: false, + removeWeakMessageListener: false, + sendAsyncMessage: false, + sendSyncMessage: false, + tabEventTarget: false, + RPMGetAppBuildID: false, + RPMGetInnerMostURI: false, + RPMGetIntPref: false, + RPMGetStringPref: false, + RPMGetBoolPref: false, + RPMSetBoolPref: false, + RPMPrefIsLocked: false, + RPMGetFormatURLPref: false, + RPMIsWindowPrivate: false, + RPMSendAsyncMessage: false, + RPMSendQuery: false, + RPMAddMessageListener: false, + RPMRecordTelemetryEvent: false, + RPMAddToHistogram: false, + RPMRemoveMessageListener: false, + RPMGetHttpResponseHeader: false, + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/jsm.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/jsm.js new file mode 100644 index 0000000000..858494b8d4 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/jsm.js @@ -0,0 +1,24 @@ +/** + * @fileoverview Defines the environment for jsm files. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +module.exports = { + globals: { + // These globals are hard-coded and available in .jsm scopes. + // https://searchfox.org/mozilla-central/rev/ed212c79cfe86357e9a5740082b9364e7f6e526f/js/xpconnect/loader/mozJSComponentLoader.cpp#134-140 + atob: false, + btoa: false, + debug: false, + dump: false, + // The WebAssembly global is available in most (if not all) contexts where + // JS can run. It's definitely available in JSMs. So even if this is not + // the perfect place to add it, it's not wrong, and we can move it later. + WebAssembly: false, + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/privileged.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/privileged.js new file mode 100644 index 0000000000..12d9e0096d --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/privileged.js @@ -0,0 +1,776 @@ +/** + * @fileoverview Defines the environment for jsm files. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +module.exports = { + globals: { + // This list of items is currently obtained manually from the list of + // mozilla::dom::constructor::id::ID enumerations in an object directory + // generated dom/bindings/RegisterBindings.cpp + APZHitResultFlags: false, + AbortController: false, + AbortSignal: false, + AccessibleNode: false, + Addon: false, + AddonEvent: false, + AddonInstall: false, + AddonManager: true, + AddonManagerPermissions: false, + AnalyserNode: false, + Animation: false, + AnimationEffect: false, + AnimationEvent: false, + AnimationPlaybackEvent: false, + AnimationTimeline: false, + AnonymousContent: false, + Attr: false, + AudioBuffer: false, + AudioBufferSourceNode: false, + AudioContext: false, + AudioDestinationNode: false, + AudioListener: false, + AudioNode: false, + AudioParam: false, + AudioParamMap: false, + AudioProcessingEvent: false, + AudioScheduledSourceNode: false, + AudioTrack: false, + AudioTrackList: false, + AudioWorklet: false, + AudioWorkletNode: false, + AuthenticatorAssertionResponse: false, + AuthenticatorAttestationResponse: false, + AuthenticatorResponse: false, + BarProp: false, + BaseAudioContext: false, + BatteryManager: false, + BeforeUnloadEvent: false, + BiquadFilterNode: false, + Blob: false, + BlobEvent: false, + BoxObject: false, + BroadcastChannel: false, + BrowsingContext: false, + CanonicalBrowsingContext: false, + CDATASection: false, + CSS: false, + CSS2Properties: false, + CSSAnimation: false, + CSSConditionRule: false, + CSSCounterStyleRule: false, + CSSFontFaceRule: false, + CSSFontFeatureValuesRule: false, + CSSGroupingRule: false, + CSSImportRule: false, + CSSKeyframeRule: false, + CSSKeyframesRule: false, + CSSMediaRule: false, + CSSMozDocumentRule: false, + CSSNamespaceRule: false, + CSSPageRule: false, + CSSPseudoElement: false, + CSSRule: false, + CSSRuleList: false, + CSSStyleDeclaration: false, + CSSStyleRule: false, + CSSStyleSheet: false, + CSSSupportsRule: false, + CSSTransition: false, + Cache: false, + CacheStorage: false, + CanvasCaptureMediaStream: false, + CanvasGradient: false, + CanvasPattern: false, + CanvasRenderingContext2D: false, + CaretPosition: false, + CaretStateChangedEvent: false, + ChannelMergerNode: false, + ChannelSplitterNode: false, + ChannelWrapper: false, + CharacterData: false, + CheckerboardReportService: false, + ChildProcessMessageManager: false, + ChildSHistory: false, + ChromeMessageBroadcaster: false, + ChromeMessageSender: false, + ChromeNodeList: false, + ChromeUtils: false, + ChromeWorker: false, + Clipboard: false, + ClipboardEvent: false, + ClonedErrorHolder: false, + CloseEvent: false, + CommandEvent: false, + Comment: false, + CompositionEvent: false, + ConsoleInstance: false, + ConstantSourceNode: false, + ContentFrameMessageManager: false, + ContentProcessMessageManager: false, + ConvolverNode: false, + CreateOfferRequest: false, + Credential: false, + CredentialsContainer: false, + Crypto: false, + CryptoKey: false, + CustomElementRegistry: false, + CustomEvent: false, + DOMError: false, + DOMException: false, + DOMImplementation: false, + DOMLocalization: false, + DOMMatrix: false, + DOMMatrixReadOnly: false, + DOMParser: false, + DOMPoint: false, + DOMPointReadOnly: false, + DOMQuad: false, + DOMRect: false, + DOMRectList: false, + DOMRectReadOnly: false, + DOMRequest: false, + DOMStringList: false, + DOMStringMap: false, + DOMTokenList: false, + DataTransfer: false, + DataTransferItem: false, + DataTransferItemList: false, + DelayNode: false, + DeprecationReportBody: false, + DeviceLightEvent: false, + DeviceMotionEvent: false, + DeviceOrientationEvent: false, + DeviceProximityEvent: false, + Directory: false, + Document: false, + DocumentFragment: false, + DocumentTimeline: false, + DocumentType: false, + DominatorTree: false, + DragEvent: false, + DynamicsCompressorNode: false, + Element: false, + ErrorEvent: false, + Event: false, + EventSource: false, + EventTarget: false, + FeaturePolicyViolationReportBody: false, + FetchObserver: false, + File: false, + FileList: false, + FileReader: false, + FileSystem: false, + FileSystemDirectoryEntry: false, + FileSystemDirectoryReader: false, + FileSystemEntry: false, + FileSystemFileEntry: false, + Flex: false, + FlexItemValues: false, + FlexLineValues: false, + FluentBundle: false, + FluentResource: false, + FocusEvent: false, + FontFace: false, + FontFaceSet: false, + FontFaceSetLoadEvent: false, + FormData: false, + FrameLoader: false, + GainNode: false, + Gamepad: false, + GamepadAxisMoveEvent: false, + GamepadButton: false, + GamepadButtonEvent: false, + GamepadEvent: false, + GamepadHapticActuator: false, + GamepadPose: false, + GamepadServiceTest: false, + Grid: false, + GridArea: false, + GridDimension: false, + GridLine: false, + GridLines: false, + GridTrack: false, + GridTracks: false, + HTMLAllCollection: false, + HTMLAnchorElement: false, + HTMLAreaElement: false, + HTMLAudioElement: false, + Audio: false, + HTMLBRElement: false, + HTMLBaseElement: false, + HTMLBodyElement: false, + HTMLButtonElement: false, + HTMLCanvasElement: false, + HTMLCollection: false, + HTMLDListElement: false, + HTMLDataElement: false, + HTMLDataListElement: false, + HTMLDetailsElement: false, + HTMLDialogElement: false, + HTMLDirectoryElement: false, + HTMLDivElement: false, + HTMLDocument: false, + HTMLElement: false, + HTMLEmbedElement: false, + HTMLFieldSetElement: false, + HTMLFontElement: false, + HTMLFormControlsCollection: false, + HTMLFormElement: false, + HTMLFrameElement: false, + HTMLFrameSetElement: false, + HTMLHRElement: false, + HTMLHeadElement: false, + HTMLHeadingElement: false, + HTMLHtmlElement: false, + HTMLIFrameElement: false, + HTMLImageElement: false, + Image: false, + HTMLInputElement: false, + HTMLLIElement: false, + HTMLLabelElement: false, + HTMLLegendElement: false, + HTMLLinkElement: false, + HTMLMapElement: false, + HTMLMarqueeElement: false, + HTMLMediaElement: false, + HTMLMenuElement: false, + HTMLMenuItemElement: false, + HTMLMetaElement: false, + HTMLMeterElement: false, + HTMLModElement: false, + HTMLOListElement: false, + HTMLObjectElement: false, + HTMLOptGroupElement: false, + HTMLOptionElement: false, + Option: false, + HTMLOptionsCollection: false, + HTMLOutputElement: false, + HTMLParagraphElement: false, + HTMLParamElement: false, + HTMLPictureElement: false, + HTMLPreElement: false, + HTMLProgressElement: false, + HTMLQuoteElement: false, + HTMLScriptElement: false, + HTMLSelectElement: false, + HTMLSlotElement: false, + HTMLSourceElement: false, + HTMLSpanElement: false, + HTMLStyleElement: false, + HTMLTableCaptionElement: false, + HTMLTableCellElement: false, + HTMLTableColElement: false, + HTMLTableElement: false, + HTMLTableRowElement: false, + HTMLTableSectionElement: false, + HTMLTemplateElement: false, + HTMLTextAreaElement: false, + HTMLTimeElement: false, + HTMLTitleElement: false, + HTMLTrackElement: false, + HTMLUListElement: false, + HTMLUnknownElement: false, + HTMLVideoElement: false, + HashChangeEvent: false, + Headers: false, + HeapSnapshot: false, + HiddenPluginEvent: false, + History: false, + IDBCursor: false, + IDBCursorWithValue: false, + IDBDatabase: false, + IDBFactory: false, + IDBFileHandle: false, + IDBFileRequest: false, + IDBIndex: false, + IDBKeyRange: false, + IDBLocaleAwareKeyRange: false, + IDBMutableFile: false, + IDBObjectStore: false, + IDBOpenDBRequest: false, + IDBRequest: false, + IDBTransaction: false, + IDBVersionChangeEvent: false, + IIRFilterNode: false, + IdleDeadline: false, + ImageBitmap: false, + ImageBitmapRenderingContext: false, + ImageCapture: false, + ImageCaptureErrorEvent: false, + ImageData: false, + ImageDocument: false, + InputEvent: false, + InspectorFontFace: false, + InspectorUtils: false, + InstallTriggerImpl: false, + IntersectionObserver: false, + IntersectionObserverEntry: false, + IOUtils: false, + JSProcessActorChild: false, + JSProcessActorParent: false, + JSWindowActorChild: false, + JSWindowActorParent: false, + KeyEvent: false, + KeyboardEvent: false, + KeyframeEffect: false, + Localization: false, + Location: false, + MIDIAccess: false, + MIDIConnectionEvent: false, + MIDIInput: false, + MIDIInputMap: false, + MIDIMessageEvent: false, + MIDIOutput: false, + MIDIOutputMap: false, + MIDIPort: false, + MatchGlob: false, + MatchPattern: false, + MatchPatternSet: false, + MediaCapabilities: false, + MediaCapabilitiesInfo: false, + MediaControlService: false, + MediaDeviceInfo: false, + MediaDevices: false, + MediaElementAudioSourceNode: false, + MediaEncryptedEvent: false, + MediaError: false, + MediaKeyError: false, + MediaKeyMessageEvent: false, + MediaKeySession: false, + MediaKeyStatusMap: false, + MediaKeySystemAccess: false, + MediaKeys: false, + MediaList: false, + MediaQueryList: false, + MediaQueryListEvent: false, + MediaRecorder: false, + MediaRecorderErrorEvent: false, + MediaSource: false, + MediaStream: false, + MediaStreamAudioDestinationNode: false, + MediaStreamAudioSourceNode: false, + MediaStreamEvent: false, + MediaStreamTrack: false, + MediaStreamTrackEvent: false, + MerchantValidationEvent: false, + MessageBroadcaster: false, + MessageChannel: false, + MessageEvent: false, + MessageListenerManager: false, + MessagePort: false, + MessageSender: false, + MimeType: false, + MimeTypeArray: false, + MouseEvent: false, + MouseScrollEvent: false, + MozCanvasPrintState: false, + MozDocumentMatcher: false, + MozDocumentObserver: false, + MozQueryInterface: false, + MozSharedMap: false, + MozSharedMapChangeEvent: false, + MozStorageAsyncStatementParams: false, + MozStorageStatementParams: false, + MozStorageStatementRow: false, + MozWritableSharedMap: false, + MutationEvent: false, + MutationObserver: false, + MutationRecord: false, + NamedNodeMap: false, + Navigator: false, + NetworkInformation: false, + Node: false, + NodeFilter: false, + NodeIterator: false, + NodeList: false, + Notification: false, + NotifyPaintEvent: false, + OfflineAudioCompletionEvent: false, + OfflineAudioContext: false, + OfflineResourceList: false, + OffscreenCanvas: false, + OscillatorNode: false, + PageTransitionEvent: false, + PaintRequest: false, + PaintRequestList: false, + PannerNode: false, + ParentProcessMessageManager: false, + Path2D: false, + PathUtils: false, + PaymentAddress: false, + PaymentMethodChangeEvent: false, + PaymentRequest: false, + PaymentRequestUpdateEvent: false, + PaymentResponse: false, + PeerConnectionImpl: false, + PeerConnectionObserver: false, + Performance: false, + PerformanceEntry: false, + PerformanceEntryEvent: false, + PerformanceMark: false, + PerformanceMeasure: false, + PerformanceNavigation: false, + PerformanceNavigationTiming: false, + PerformanceObserver: false, + PerformanceObserverEntryList: false, + PerformanceResourceTiming: false, + PerformanceServerTiming: false, + PerformanceTiming: false, + PeriodicWave: false, + PermissionStatus: false, + Permissions: false, + PlacesBookmark: false, + PlacesBookmarkAddition: false, + PlacesBookmarkRemoved: false, + PlacesEvent: false, + PlacesHistoryCleared: false, + PlacesObservers: false, + PlacesRanking: false, + PlacesVisit: false, + PlacesVisitTitle: false, + PlacesWeakCallbackWrapper: false, + Plugin: false, + PluginArray: false, + PluginCrashedEvent: false, + PointerEvent: false, + PopStateEvent: false, + PopupBlockedEvent: false, + PrecompiledScript: false, + Presentation: false, + PresentationAvailability: false, + PresentationConnection: false, + PresentationConnectionAvailableEvent: false, + PresentationConnectionCloseEvent: false, + PresentationConnectionList: false, + PresentationReceiver: false, + PresentationRequest: false, + PrioEncoder: false, + ProcessMessageManager: false, + ProcessingInstruction: false, + ProgressEvent: false, + PromiseDebugging: false, + PromiseRejectionEvent: false, + PublicKeyCredential: false, + PushManager: false, + PushManagerImpl: false, + PushSubscription: false, + PushSubscriptionOptions: false, + RTCCertificate: false, + RTCDTMFSender: false, + RTCDTMFToneChangeEvent: false, + RTCDataChannel: false, + RTCDataChannelEvent: false, + RTCIceCandidate: false, + RTCPeerConnection: false, + RTCPeerConnectionIceEvent: false, + RTCPeerConnectionStatic: false, + RTCRtpReceiver: false, + RTCRtpSender: false, + RTCRtpTransceiver: false, + RTCSessionDescription: false, + RTCStatsReport: false, + RTCTrackEvent: false, + RadioNodeList: false, + Range: false, + Report: false, + ReportBody: false, + ReportingObserver: false, + Request: false, + Response: false, + SessionStoreUtils: false, + SVGAElement: false, + SVGAngle: false, + SVGAnimateElement: false, + SVGAnimateMotionElement: false, + SVGAnimateTransformElement: false, + SVGAnimatedAngle: false, + SVGAnimatedBoolean: false, + SVGAnimatedEnumeration: false, + SVGAnimatedInteger: false, + SVGAnimatedLength: false, + SVGAnimatedLengthList: false, + SVGAnimatedNumber: false, + SVGAnimatedNumberList: false, + SVGAnimatedPreserveAspectRatio: false, + SVGAnimatedRect: false, + SVGAnimatedString: false, + SVGAnimatedTransformList: false, + SVGAnimationElement: false, + SVGCircleElement: false, + SVGClipPathElement: false, + SVGComponentTransferFunctionElement: false, + SVGDefsElement: false, + SVGDescElement: false, + SVGElement: false, + SVGEllipseElement: false, + SVGFEBlendElement: false, + SVGFEColorMatrixElement: false, + SVGFEComponentTransferElement: false, + SVGFECompositeElement: false, + SVGFEConvolveMatrixElement: false, + SVGFEDiffuseLightingElement: false, + SVGFEDisplacementMapElement: false, + SVGFEDistantLightElement: false, + SVGFEDropShadowElement: false, + SVGFEFloodElement: false, + SVGFEFuncAElement: false, + SVGFEFuncBElement: false, + SVGFEFuncGElement: false, + SVGFEFuncRElement: false, + SVGFEGaussianBlurElement: false, + SVGFEImageElement: false, + SVGFEMergeElement: false, + SVGFEMergeNodeElement: false, + SVGFEMorphologyElement: false, + SVGFEOffsetElement: false, + SVGFEPointLightElement: false, + SVGFESpecularLightingElement: false, + SVGFESpotLightElement: false, + SVGFETileElement: false, + SVGFETurbulenceElement: false, + SVGFilterElement: false, + SVGForeignObjectElement: false, + SVGGElement: false, + SVGGeometryElement: false, + SVGGradientElement: false, + SVGGraphicsElement: false, + SVGImageElement: false, + SVGLength: false, + SVGLengthList: false, + SVGLineElement: false, + SVGLinearGradientElement: false, + SVGMPathElement: false, + SVGMarkerElement: false, + SVGMaskElement: false, + SVGMatrix: false, + SVGMetadataElement: false, + SVGNumber: false, + SVGNumberList: false, + SVGPathElement: false, + SVGPathSegList: false, + SVGPatternElement: false, + SVGPoint: false, + SVGPointList: false, + SVGPolygonElement: false, + SVGPolylineElement: false, + SVGPreserveAspectRatio: false, + SVGRadialGradientElement: false, + SVGRect: false, + SVGRectElement: false, + SVGSVGElement: false, + SVGScriptElement: false, + SVGSetElement: false, + SVGStopElement: false, + SVGStringList: false, + SVGStyleElement: false, + SVGSwitchElement: false, + SVGSymbolElement: false, + SVGTSpanElement: false, + SVGTextContentElement: false, + SVGTextElement: false, + SVGTextPathElement: false, + SVGTextPositioningElement: false, + SVGTitleElement: false, + SVGTransform: false, + SVGTransformList: false, + SVGUnitTypes: false, + SVGUseElement: false, + SVGViewElement: false, + SVGZoomAndPan: false, + Screen: false, + ScreenLuminance: false, + ScreenOrientation: false, + ScriptProcessorNode: false, + ScrollAreaEvent: false, + ScrollViewChangeEvent: false, + SecurityPolicyViolationEvent: false, + Selection: false, + ServiceWorker: false, + ServiceWorkerContainer: false, + ServiceWorkerRegistration: false, + ShadowRoot: false, + SharedWorker: false, + SimpleGestureEvent: false, + SourceBuffer: false, + SourceBufferList: false, + SpeechGrammar: false, + SpeechGrammarList: false, + SpeechRecognition: false, + SpeechRecognitionAlternative: false, + SpeechRecognitionError: false, + SpeechRecognitionEvent: false, + SpeechRecognitionResult: false, + SpeechRecognitionResultList: false, + SpeechSynthesis: false, + SpeechSynthesisErrorEvent: false, + SpeechSynthesisEvent: false, + SpeechSynthesisUtterance: false, + SpeechSynthesisVoice: false, + StereoPannerNode: false, + Storage: false, + StorageEvent: false, + StorageManager: false, + StreamFilter: false, + StreamFilterDataEvent: false, + StructuredCloneHolder: false, + StructuredCloneTester: false, + StyleSheet: false, + StyleSheetApplicableStateChangeEvent: false, + StyleSheetList: false, + SubtleCrypto: false, + SyncMessageSender: false, + TCPServerSocket: false, + TCPServerSocketEvent: false, + TCPSocket: false, + TCPSocketErrorEvent: false, + TCPSocketEvent: false, + TelemetryStopwatch: false, + TestingDeprecatedInterface: false, + Text: false, + TextClause: false, + TextDecoder: false, + TextEncoder: false, + TextMetrics: false, + TextTrack: false, + TextTrackCue: false, + TextTrackCueList: false, + TextTrackList: false, + TimeEvent: false, + TimeRanges: false, + Touch: false, + TouchEvent: false, + TouchList: false, + TrackEvent: false, + TransceiverImpl: false, + TransitionEvent: false, + TreeColumn: false, + TreeColumns: false, + TreeContentView: false, + TreeWalker: false, + U2F: false, + UDPMessageEvent: false, + UDPSocket: false, + UIEvent: false, + URL: false, + URLSearchParams: false, + UserInteraction: false, + UserProximityEvent: false, + VRDisplay: false, + VRDisplayCapabilities: false, + VRDisplayEvent: false, + VREyeParameters: false, + VRFieldOfView: false, + VRFrameData: false, + VRMockController: false, + VRMockDisplay: false, + VRPose: false, + VRServiceTest: false, + VRStageParameters: false, + VRSubmitFrameResult: false, + VTTCue: false, + VTTRegion: false, + ValidityState: false, + VideoPlaybackQuality: false, + VideoTrack: false, + VideoTrackList: false, + VisualViewport: false, + WaveShaperNode: false, + WebExtensionContentScript: false, + WebExtensionPolicy: false, + WebGL2RenderingContext: false, + WebGLActiveInfo: false, + WebGLBuffer: false, + WebGLContextEvent: false, + WebGLFramebuffer: false, + WebGLProgram: false, + WebGLQuery: false, + WebGLRenderbuffer: false, + WebGLRenderingContext: false, + WebGLSampler: false, + WebGLShader: false, + WebGLShaderPrecisionFormat: false, + WebGLSync: false, + WebGLTexture: false, + WebGLTransformFeedback: false, + WebGLUniformLocation: false, + WebGLVertexArrayObject: false, + WebGPU: false, + WebGPUAdapter: false, + WebGPUAttachmentState: false, + WebGPUBindGroup: false, + WebGPUBindGroupLayout: false, + WebGPUBindingType: false, + WebGPUBlendFactor: false, + WebGPUBlendOperation: false, + WebGPUBlendState: false, + WebGPUBuffer: false, + WebGPUBufferUsage: false, + WebGPUColorWriteBits: false, + WebGPUCommandBuffer: false, + WebGPUCommandEncoder: false, + WebGPUCompareFunction: false, + WebGPUComputePipeline: false, + WebGPUDepthStencilState: false, + WebGPUDevice: false, + WebGPUFence: false, + WebGPUFilterMode: false, + WebGPUIndexFormat: false, + WebGPUInputState: false, + WebGPUInputStepMode: false, + WebGPULoadOp: false, + WebGPULogEntry: false, + WebGPUPipelineLayout: false, + WebGPUPrimitiveTopology: false, + WebGPUQueue: false, + WebGPURenderPipeline: false, + WebGPUSampler: false, + WebGPUShaderModule: false, + WebGPUShaderStage: false, + WebGPUShaderStageBit: false, + WebGPUStencilOperation: false, + WebGPUStoreOp: false, + WebGPUSwapChain: false, + WebGPUTexture: false, + WebGPUTextureDimension: false, + WebGPUTextureFormat: false, + WebGPUTextureUsage: false, + WebGPUTextureView: false, + WebGPUVertexFormat: false, + WebKitCSSMatrix: false, + WebSocket: false, + WebrtcGlobalInformation: false, + WheelEvent: false, + Window: false, + WindowGlobalChild: false, + WindowGlobalParent: false, + WindowRoot: false, + Worker: false, + Worklet: false, + XMLDocument: false, + XMLHttpRequest: false, + XMLHttpRequestEventTarget: false, + XMLHttpRequestUpload: false, + XMLSerializer: false, + XPathEvaluator: false, + XPathExpression: false, + XPathResult: false, + XSLTProcessor: false, + XULCommandEvent: false, + XULElement: false, + XULFrameElement: false, + XULMenuElement: false, + XULPopupElement: false, + XULScrollElement: false, + XULTextElement: false, + console: false, + mozRTCIceCandidate: false, + mozRTCPeerConnection: false, + mozRTCSessionDescription: false, + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/simpletest.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/simpletest.js new file mode 100644 index 0000000000..2f5dd5c33e --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/simpletest.js @@ -0,0 +1,35 @@ +/** + * @fileoverview Defines the environment for scripts that use the SimpleTest + * mochitest harness. Imports the globals from the relevant files. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var path = require("path"); +var { getScriptGlobals } = require("./utils"); + +// When updating this list, be sure to also update the 'support-files' config +// in `tools/lint/eslint.yml`. +const simpleTestFiles = [ + "AccessibilityUtils.js", + "ExtensionTestUtils.js", + "EventUtils.js", + "MockObjects.js", + "SimpleTest.js", + "WindowSnapshot.js", + "paint_listener.js", +]; +const simpleTestPath = "testing/mochitest/tests/SimpleTest"; + +module.exports = getScriptGlobals( + "simpletest", + simpleTestFiles.map(file => path.join(simpleTestPath, file)) +); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/utils.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/utils.js new file mode 100644 index 0000000000..aeda690ba5 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/utils.js @@ -0,0 +1,62 @@ +/** + * @fileoverview Provides utilities for setting up environments. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +var path = require("path"); +var helpers = require("../helpers"); +var globals = require("../globals"); + +/** + * Obtains the globals for a list of files. + * + * @param {Array.<String>} files + * The array of files to get globals for. The paths are relative to the topsrcdir. + * @returns {Object} + * Returns an object with keys of the global names and values of if they are + * writable or not. + */ +function getGlobalsForScripts(environmentName, files, extraDefinitions) { + let fileGlobals = extraDefinitions; + const root = helpers.rootDir; + for (const file of files) { + const fileName = path.join(root, file); + try { + fileGlobals = fileGlobals.concat(globals.getGlobalsForFile(fileName)); + } catch (e) { + console.error(`Could not load globals from file ${fileName}: ${e}`); + console.error( + `You may need to update the mappings for the ${environmentName} environment` + ); + throw new Error(`Could not load globals from file ${fileName}: ${e}`); + } + } + + var globalObjects = {}; + for (let global of fileGlobals) { + globalObjects[global.name] = global.writable; + } + return globalObjects; +} + +module.exports = { + getScriptGlobals( + environmentName, + files, + extraDefinitions = [], + extraEnv = {} + ) { + if (helpers.isMozillaCentralBased()) { + return { + globals: getGlobalsForScripts(environmentName, files, extraDefinitions), + ...extraEnv, + }; + } + return helpers.getSavedEnvironmentItems(environmentName); + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/xpcshell.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/xpcshell.js new file mode 100644 index 0000000000..570119b6e9 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/xpcshell.js @@ -0,0 +1,43 @@ +/** + * @fileoverview Defines the environment for frame scripts. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +var { getScriptGlobals } = require("./utils"); + +const extraGlobals = [ + // Assert.jsm globals. + "setReporter", + "report", + "ok", + "equal", + "notEqual", + "deepEqual", + "notDeepEqual", + "strictEqual", + "notStrictEqual", + "throws", + "rejects", + "greater", + "greaterOrEqual", + "less", + "lessOrEqual", + // TestingFunctions.cpp globals + "allocationMarker", + "byteSize", + "gc", + "gczeal", +]; + +module.exports = getScriptGlobals( + "xpcshell", + ["testing/xpcshell/head.js"], + extraGlobals.map(g => { + return { name: g, writable: false }; + }) +); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/globals.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/globals.js new file mode 100644 index 0000000000..cb1b0d5f66 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/globals.js @@ -0,0 +1,359 @@ +/** + * @fileoverview functions for scanning an AST for globals including + * traversing referenced scripts. + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +const path = require("path"); +const fs = require("fs"); +const helpers = require("./helpers"); +const htmlparser = require("htmlparser2"); + +/** + * Parses a list of "name:boolean_value" or/and "name" options divided by comma + * or whitespace. + * + * This function was copied from eslint.js + * + * @param {string} string The string to parse. + * @param {Comment} comment The comment node which has the string. + * @returns {Object} Result map object of names and boolean values + */ +function parseBooleanConfig(string, comment) { + let items = {}; + + // Collapse whitespace around : to make parsing easier + string = string.replace(/\s*:\s*/g, ":"); + // Collapse whitespace around , + string = string.replace(/\s*,\s*/g, ","); + + string.split(/\s|,+/).forEach(function(name) { + if (!name) { + return; + } + + let pos = name.indexOf(":"); + let value; + if (pos !== -1) { + value = name.substring(pos + 1, name.length); + name = name.substring(0, pos); + } + + items[name] = { + value: value === "true", + comment, + }; + }); + + return items; +} + +/** + * Global discovery can require parsing many files. This map of + * {String} => {Object} caches what globals were discovered for a file path. + */ +const globalCache = new Map(); + +/** + * Global discovery can occasionally meet circular dependencies due to the way + * js files are included via xul files etc. This set is used to avoid getting + * into loops whilst the discovery is in progress. + */ +var globalDiscoveryInProgressForFiles = new Set(); + +/** + * When looking for globals in HTML files, it can be common to have more than + * one script tag with inline javascript. These will normally be called together, + * so we store the globals for just the last HTML file processed. + */ +var lastHTMLGlobals = {}; + +/** + * An object that returns found globals for given AST node types. Each prototype + * property should be named for a node type and accepts a node parameter and a + * parents parameter which is a list of the parent nodes of the current node. + * Each returns an array of globals found. + * + * @param {String} filePath + * The absolute path of the file being parsed. + */ +function GlobalsForNode(filePath) { + this.path = filePath; + this.dirname = path.dirname(this.path); +} + +GlobalsForNode.prototype = { + Program(node) { + let globals = []; + for (let comment of node.comments) { + if (comment.type !== "Block") { + continue; + } + let value = comment.value.trim(); + value = value.replace(/\n/g, ""); + + // We have to discover any globals that ESLint would have defined through + // comment directives. + let match = /^globals?\s+(.+)/.exec(value); + if (match) { + let values = parseBooleanConfig(match[1].trim(), node); + for (let name of Object.keys(values)) { + globals.push({ + name, + writable: values[name].value, + }); + } + // We matched globals, so we won't match import-globals-from. + continue; + } + + match = /^import-globals-from\s+(.+)$/.exec(value); + if (!match) { + continue; + } + + let filePath = match[1].trim(); + + if (!path.isAbsolute(filePath)) { + filePath = path.resolve(this.dirname, filePath); + } + globals = globals.concat(module.exports.getGlobalsForFile(filePath)); + } + + return globals; + }, + + ExpressionStatement(node, parents, globalScope) { + let isGlobal = helpers.getIsGlobalScope(parents); + let globals = []; + + // Note: We check the expression types here and only call the necessary + // functions to aid performance. + if (node.expression.type === "AssignmentExpression") { + globals = helpers.convertThisAssignmentExpressionToGlobals( + node, + isGlobal + ); + } else if (node.expression.type === "CallExpression") { + globals = helpers.convertCallExpressionToGlobals(node, isGlobal); + } + + // Here we assume that if importScripts is set in the global scope, then + // this is a worker. It would be nice if eslint gave us a way of getting + // the environment directly. + if (globalScope && globalScope.set.get("importScripts")) { + let workerDetails = helpers.convertWorkerExpressionToGlobals( + node, + isGlobal, + this.dirname + ); + globals = globals.concat(workerDetails); + } + + return globals; + }, +}; + +module.exports = { + /** + * Returns all globals for a given file. Recursively searches through + * import-globals-from directives and also includes globals defined by + * standard eslint directives. + * + * @param {String} filePath + * The absolute path of the file to be parsed. + * @param {Object} astOptions + * Extra options to pass to the parser. + * @return {Array} + * An array of objects that contain details about the globals: + * - {String} name + * The name of the global. + * - {Boolean} writable + * If the global is writeable or not. + */ + getGlobalsForFile(filePath, astOptions = {}) { + if (globalCache.has(filePath)) { + return globalCache.get(filePath); + } + + if (globalDiscoveryInProgressForFiles.has(filePath)) { + // We're already processing this file, so return an empty set for now - + // the initial processing will pick up on the globals for this file. + return []; + } + globalDiscoveryInProgressForFiles.add(filePath); + + let content = fs.readFileSync(filePath, "utf8"); + + // Parse the content into an AST + let { ast, scopeManager, visitorKeys } = helpers.parseCode( + content, + astOptions + ); + + // Discover global declarations + let globalScope = scopeManager.acquire(ast); + + let globals = Object.keys(globalScope.variables).map(v => ({ + name: globalScope.variables[v].name, + writable: true, + })); + + // Walk over the AST to find any of our custom globals + let handler = new GlobalsForNode(filePath); + + helpers.walkAST(ast, visitorKeys, (type, node, parents) => { + if (type in handler) { + let newGlobals = handler[type](node, parents, globalScope); + globals.push.apply(globals, newGlobals); + } + }); + + globalCache.set(filePath, globals); + + globalDiscoveryInProgressForFiles.delete(filePath); + return globals; + }, + + /** + * Returns all the globals for an html file that are defined by imported + * scripts (i.e. <script src="foo.js">). + * + * This function will cache results for one html file only - we expect + * this to be called sequentially for each chunk of a HTML file, rather + * than chucks of different files in random order. + * + * @param {String} filePath + * The absolute path of the file to be parsed. + * @return {Array} + * An array of objects that contain details about the globals: + * - {String} name + * The name of the global. + * - {Boolean} writable + * If the global is writeable or not. + */ + getImportedGlobalsForHTMLFile(filePath) { + if (lastHTMLGlobals.filename === filePath) { + return lastHTMLGlobals.globals; + } + + let dir = path.dirname(filePath); + let globals = []; + + let content = fs.readFileSync(filePath, "utf8"); + let scriptSrcs = []; + + // We use htmlparser as this ensures we find the script tags correctly. + let parser = new htmlparser.Parser( + { + onopentag(name, attribs) { + if (name === "script" && "src" in attribs) { + scriptSrcs.push({ + src: attribs.src, + type: + "type" in attribs && attribs.type == "module" + ? "module" + : "script", + }); + } + }, + }, + { + xmlMode: filePath.endsWith("xhtml"), + } + ); + + parser.parseComplete(content); + + for (let script of scriptSrcs) { + // Ensure that the script src isn't just "". + if (!script.src) { + continue; + } + let scriptName; + if (script.src.includes("http:")) { + // We don't handle this currently as the paths are complex to match. + } else if (script.src.includes("chrome")) { + // This is one way of referencing test files. + script.src = script.src.replace("chrome://mochikit/content/", "/"); + scriptName = path.join( + helpers.rootDir, + "testing", + "mochitest", + script.src + ); + } else if (script.src.includes("SimpleTest")) { + // This is another way of referencing test files... + scriptName = path.join( + helpers.rootDir, + "testing", + "mochitest", + script.src + ); + } else if (script.src.startsWith("/tests/")) { + scriptName = path.join(helpers.rootDir, script.src.substring(7)); + } else { + // Fallback to hoping this is a relative path. + scriptName = path.join(dir, script.src); + } + if (scriptName && fs.existsSync(scriptName)) { + globals.push( + ...module.exports.getGlobalsForFile(scriptName, { + ecmaVersion: helpers.getECMAVersion(), + sourceType: script.type, + }) + ); + } + } + + lastHTMLGlobals.filePath = filePath; + return (lastHTMLGlobals.globals = globals); + }, + + /** + * Intended to be used as-is for an ESLint rule that parses for globals in + * the current file and recurses through import-globals-from directives. + * + * @param {Object} context + * The ESLint parsing context. + */ + getESLintGlobalParser(context) { + let globalScope; + + let parser = { + Program(node) { + globalScope = context.getScope(); + }, + }; + let filename = context.getFilename(); + + let extraHTMLGlobals = []; + if (filename.endsWith(".html") || filename.endsWith(".xhtml")) { + extraHTMLGlobals = module.exports.getImportedGlobalsForHTMLFile(filename); + } + + // Install thin wrappers around GlobalsForNode + let handler = new GlobalsForNode(helpers.getAbsoluteFilePath(context)); + + for (let type of Object.keys(GlobalsForNode.prototype)) { + parser[type] = function(node) { + if (type === "Program") { + globalScope = context.getScope(); + helpers.addGlobals(extraHTMLGlobals, globalScope); + } + let globals = handler[type](node, context.getAncestors(), globalScope); + helpers.addGlobals( + globals, + globalScope, + node.type !== "Program" && node + ); + }; + } + + return parser; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/helpers.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/helpers.js new file mode 100644 index 0000000000..a3a5fcf8e7 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/helpers.js @@ -0,0 +1,881 @@ +/** + * @fileoverview A collection of helper functions. + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ +"use strict"; + +const parser = require("babel-eslint"); +const { analyze } = require("eslint-scope"); +const { KEYS: defaultVisitorKeys } = require("eslint-visitor-keys"); +const estraverse = require("estraverse"); +const path = require("path"); +const fs = require("fs"); +const ini = require("multi-ini"); +const recommendedConfig = require("./configs/recommended"); + +var gModules = null; +var gRootDir = null; +var directoryManifests = new Map(); + +const callExpressionDefinitions = [ + /^loader\.lazyGetter\(this, "(\w+)"/, + /^loader\.lazyImporter\(this, "(\w+)"/, + /^loader\.lazyServiceGetter\(this, "(\w+)"/, + /^loader\.lazyRequireGetter\(this, "(\w+)"/, + /^XPCOMUtils\.defineLazyGetter\(this, "(\w+)"/, + /^XPCOMUtils\.defineLazyModuleGetter\(this, "(\w+)"/, + /^ChromeUtils\.defineModuleGetter\(this, "(\w+)"/, + /^XPCOMUtils\.defineLazyPreferenceGetter\(this, "(\w+)"/, + /^XPCOMUtils\.defineLazyProxy\(this, "(\w+)"/, + /^XPCOMUtils\.defineLazyScriptGetter\(this, "(\w+)"/, + /^XPCOMUtils\.defineLazyServiceGetter\(this, "(\w+)"/, + /^XPCOMUtils\.defineConstant\(this, "(\w+)"/, + /^DevToolsUtils\.defineLazyModuleGetter\(this, "(\w+)"/, + /^DevToolsUtils\.defineLazyGetter\(this, "(\w+)"/, + /^Object\.defineProperty\(this, "(\w+)"/, + /^Reflect\.defineProperty\(this, "(\w+)"/, + /^this\.__defineGetter__\("(\w+)"/, +]; + +const callExpressionMultiDefinitions = [ + "XPCOMUtils.defineLazyGlobalGetters(this,", + "XPCOMUtils.defineLazyModuleGetters(this,", + "XPCOMUtils.defineLazyServiceGetters(this,", + "loader.lazyRequireGetter(this,", +]; + +const imports = [ + /^(?:Cu|Components\.utils|ChromeUtils)\.import\(".*\/((.*?)\.jsm?)", this\)/, +]; + +const workerImportFilenameMatch = /(.*\/)*((.*?)\.jsm?)/; + +module.exports = { + get iniParser() { + if (!this._iniParser) { + this._iniParser = new ini.Parser(); + } + return this._iniParser; + }, + + get modulesGlobalData() { + if (!gModules) { + if (this.isMozillaCentralBased()) { + gModules = require(path.join( + this.rootDir, + "tools", + "lint", + "eslint", + "modules.json" + )); + } else { + gModules = require("./modules.json"); + } + } + + return gModules; + }, + + get servicesData() { + return require("./services.json"); + }, + + /** + * Gets the abstract syntax tree (AST) of the JavaScript source code contained + * in sourceText. This matches the results for an eslint parser, see + * https://eslint.org/docs/developer-guide/working-with-custom-parsers. + * + * @param {String} sourceText + * Text containing valid JavaScript. + * @param {Object} astOptions + * Extra configuration to pass to the espree parser, these will override + * the configuration from getPermissiveConfig(). + * + * @return {Object} + * Returns an object containing `ast`, `scopeManager` and + * `visitorKeys` + */ + parseCode(sourceText, astOptions = {}) { + // Use a permissive config file to allow parsing of anything that Espree + // can parse. + let config = { ...this.getPermissiveConfig(), ...astOptions }; + + let parseResult = + "parseForESLint" in parser + ? parser.parseForESLint(sourceText, config) + : { ast: parser.parse(sourceText, config) }; + + let visitorKeys = parseResult.visitorKeys || defaultVisitorKeys; + visitorKeys.ExperimentalRestProperty = visitorKeys.RestElement; + visitorKeys.ExperimentalSpreadProperty = visitorKeys.SpreadElement; + + return { + ast: parseResult.ast, + scopeManager: parseResult.scopeManager || analyze(parseResult.ast), + visitorKeys, + }; + }, + + /** + * A simplistic conversion of some AST nodes to a standard string form. + * + * @param {Object} node + * The AST node to convert. + * + * @return {String} + * The JS source for the node. + */ + getASTSource(node, context) { + switch (node.type) { + case "MemberExpression": + if (node.computed) { + let filename = context && context.getFilename(); + throw new Error( + `getASTSource unsupported computed MemberExpression in ${filename}` + ); + } + return ( + this.getASTSource(node.object) + + "." + + this.getASTSource(node.property) + ); + case "ThisExpression": + return "this"; + case "Identifier": + return node.name; + case "Literal": + return JSON.stringify(node.value); + case "CallExpression": + var args = node.arguments.map(a => this.getASTSource(a)).join(", "); + return this.getASTSource(node.callee) + "(" + args + ")"; + case "ObjectExpression": + return "{}"; + case "ExpressionStatement": + return this.getASTSource(node.expression) + ";"; + case "FunctionExpression": + return "function() {}"; + case "ArrayExpression": + return "[" + node.elements.map(this.getASTSource, this).join(",") + "]"; + case "ArrowFunctionExpression": + return "() => {}"; + case "AssignmentExpression": + return ( + this.getASTSource(node.left) + " = " + this.getASTSource(node.right) + ); + case "BinaryExpression": + return ( + this.getASTSource(node.left) + + " " + + node.operator + + " " + + this.getASTSource(node.right) + ); + default: + throw new Error("getASTSource unsupported node type: " + node.type); + } + }, + + /** + * This walks an AST in a manner similar to ESLint passing node events to the + * listener. The listener is expected to be a simple function + * which accepts node type, node and parents arguments. + * + * @param {Object} ast + * The AST to walk. + * @param {Array} visitorKeys + * The visitor keys to use for the AST. + * @param {Function} listener + * A callback function to call for the nodes. Passed three arguments, + * event type, node and an array of parent nodes for the current node. + */ + walkAST(ast, visitorKeys, listener) { + let parents = []; + + estraverse.traverse(ast, { + enter(node, parent) { + listener(node.type, node, parents); + + parents.push(node); + }, + + leave(node, parent) { + if (parents.length == 0) { + throw new Error("Left more nodes than entered."); + } + parents.pop(); + }, + + keys: visitorKeys, + }); + if (parents.length) { + throw new Error("Entered more nodes than left."); + } + }, + + /** + * Attempts to convert an ExpressionStatement to likely global variable + * definitions. + * + * @param {Object} node + * The AST node to convert. + * @param {boolean} isGlobal + * True if the current node is in the global scope. + * + * @return {Array} + * An array of objects that contain details about the globals: + * - {String} name + * The name of the global. + * - {Boolean} writable + * If the global is writeable or not. + */ + convertWorkerExpressionToGlobals(node, isGlobal, dirname) { + var getGlobalsForFile = require("./globals").getGlobalsForFile; + + let globalModules = this.modulesGlobalData; + + let results = []; + let expr = node.expression; + + if ( + node.expression.type === "CallExpression" && + expr.callee && + expr.callee.type === "Identifier" && + expr.callee.name === "importScripts" + ) { + for (var arg of expr.arguments) { + var match = arg.value && arg.value.match(workerImportFilenameMatch); + if (match) { + if (!match[1]) { + let filePath = path.resolve(dirname, match[2]); + if (fs.existsSync(filePath)) { + let additionalGlobals = getGlobalsForFile(filePath); + results = results.concat(additionalGlobals); + } + } else if (match[2] in globalModules) { + results = results.concat( + globalModules[match[2]].map(name => { + return { name, writable: true }; + }) + ); + } else { + results.push({ name: match[3], writable: true, explicit: true }); + } + } + } + } + + return results; + }, + + /** + * Attempts to convert an AssignmentExpression into a global variable + * definition if it applies to `this` in the global scope. + * + * @param {Object} node + * The AST node to convert. + * @param {boolean} isGlobal + * True if the current node is in the global scope. + * + * @return {Array} + * An array of objects that contain details about the globals: + * - {String} name + * The name of the global. + * - {Boolean} writable + * If the global is writeable or not. + */ + convertThisAssignmentExpressionToGlobals(node, isGlobal) { + if ( + isGlobal && + node.expression.left && + node.expression.left.object && + node.expression.left.object.type === "ThisExpression" && + node.expression.left.property && + node.expression.left.property.type === "Identifier" + ) { + return [{ name: node.expression.left.property.name, writable: true }]; + } + return []; + }, + + /** + * Attempts to convert an CallExpressions that look like module imports + * into global variable definitions, using modules.json data if appropriate. + * + * @param {Object} node + * The AST node to convert. + * @param {boolean} isGlobal + * True if the current node is in the global scope. + * + * @return {Array} + * An array of objects that contain details about the globals: + * - {String} name + * The name of the global. + * - {Boolean} writable + * If the global is writeable or not. + */ + convertCallExpressionToGlobals(node, isGlobal) { + let express = node.expression; + if ( + express.type === "CallExpression" && + express.callee.type === "MemberExpression" && + express.callee.object && + express.callee.object.type === "Identifier" && + express.arguments.length === 1 && + express.arguments[0].type === "ArrayExpression" && + express.callee.property.type === "Identifier" && + express.callee.property.name === "importGlobalProperties" + ) { + return express.arguments[0].elements.map(literal => { + return { + explicit: true, + name: literal.value, + writable: false, + }; + }); + } + + let source; + try { + source = this.getASTSource(node); + } catch (e) { + return []; + } + + for (let reg of imports) { + let match = source.match(reg); + if (match) { + // The two argument form is only acceptable in the global scope + if (node.expression.arguments.length > 1 && !isGlobal) { + return []; + } + + let globalModules = this.modulesGlobalData; + + if (match[1] in globalModules) { + // XXX We mark as explicit when there is only one exported symbol from + // the module. For now this avoids no-unused-vars complaining in the + // cases where we import everything from a module but only use one + // of them. + let explicit = globalModules[match[1]].length == 1; + return globalModules[match[1]].map(name => ({ + name, + writable: true, + explicit, + })); + } + + return [{ name: match[2], writable: true, explicit: true }]; + } + } + + // The definition matches below must be in the global scope for us to define + // a global, so bail out early if we're not a global. + if (!isGlobal) { + return []; + } + + for (let reg of callExpressionDefinitions) { + let match = source.match(reg); + if (match) { + return [{ name: match[1], writable: true, explicit: true }]; + } + } + + if ( + callExpressionMultiDefinitions.some(expr => source.startsWith(expr)) && + node.expression.arguments[1] + ) { + let arg = node.expression.arguments[1]; + if (arg.type === "ObjectExpression") { + return arg.properties + .map(p => ({ + name: p.type === "Property" && p.key.name, + writable: true, + explicit: true, + })) + .filter(g => g.name); + } + if (arg.type === "ArrayExpression") { + return arg.elements + .map(p => ({ + name: p.type === "Literal" && p.value, + writable: true, + explicit: true, + })) + .filter(g => typeof g.name == "string"); + } + } + + if ( + node.expression.callee.type == "MemberExpression" && + node.expression.callee.property.type == "Identifier" && + node.expression.callee.property.name == "defineLazyScriptGetter" + ) { + // The case where we have a single symbol as a string has already been + // handled by the regexp, so we have an array of symbols here. + return node.expression.arguments[1].elements.map(n => ({ + name: n.value, + writable: true, + explicit: true, + })); + } + + return []; + }, + + /** + * Add a variable to the current scope. + * HACK: This relies on eslint internals so it could break at any time. + * + * @param {String} name + * The variable name to add to the scope. + * @param {ASTScope} scope + * The scope to add to. + * @param {boolean} writable + * Whether the global can be overwritten. + * @param {Object} [node] + * The AST node that defined the globals. + */ + addVarToScope(name, scope, writable, node) { + scope.__defineGeneric(name, scope.set, scope.variables, null, null); + + let variable = scope.set.get(name); + variable.eslintExplicitGlobal = false; + variable.writeable = writable; + if (node) { + variable.defs.push({ node, name: { name } }); + variable.identifiers.push(node); + } + + // Walk to the global scope which holds all undeclared variables. + while (scope.type != "global") { + scope = scope.upper; + } + + // "through" contains all references with no found definition. + scope.through = scope.through.filter(function(reference) { + if (reference.identifier.name != name) { + return true; + } + + // Links the variable and the reference. + // And this reference is removed from `Scope#through`. + reference.resolved = variable; + variable.references.push(reference); + return false; + }); + }, + + /** + * Adds a set of globals to a scope. + * + * @param {Array} globalVars + * An array of global variable names. + * @param {ASTScope} scope + * The scope. + * @param {Object} [node] + * The AST node that defined the globals. + */ + addGlobals(globalVars, scope, node) { + globalVars.forEach(v => + this.addVarToScope(v.name, scope, v.writable, v.explicit && node) + ); + }, + + /** + * To allow espree to parse almost any JavaScript we need as many features as + * possible turned on. This method returns that config. + * + * @return {Object} + * Espree compatible permissive config. + */ + getPermissiveConfig() { + return { + range: true, + loc: true, + comment: true, + attachComment: true, + ecmaVersion: this.getECMAVersion(), + sourceType: "script", + }; + }, + + /** + * Returns the ECMA version of the recommended config. + * + * @return {Number} The ECMA version of the recommended config. + */ + getECMAVersion() { + return recommendedConfig.parserOptions.ecmaVersion; + }, + + /** + * Check whether a node is a function. + * + * @param {Object} node + * The AST node to check + * + * @return {Boolean} + * True or false + */ + getIsFunctionNode(node) { + switch (node.type) { + case "ArrowFunctionExpression": + case "FunctionDeclaration": + case "FunctionExpression": + return true; + } + return false; + }, + + /** + * Check whether the context is the global scope. + * + * @param {Array} ancestors + * The parents of the current node. + * + * @return {Boolean} + * True or false + */ + getIsGlobalScope(ancestors) { + for (let parent of ancestors) { + if (this.getIsFunctionNode(parent)) { + return false; + } + } + return true; + }, + + /** + * Check whether we might be in a test head file. + * + * @param {RuleContext} scope + * You should pass this from within a rule + * e.g. helpers.getIsHeadFile(context) + * + * @return {Boolean} + * True or false + */ + getIsHeadFile(scope) { + var pathAndFilename = this.cleanUpPath(scope.getFilename()); + + return /.*[\\/]head(_.+)?\.js$/.test(pathAndFilename); + }, + + /** + * Gets the head files for a potential test file + * + * @param {RuleContext} scope + * You should pass this from within a rule + * e.g. helpers.getIsHeadFile(context) + * + * @return {String[]} + * Paths to head files to load for the test + */ + getTestHeadFiles(scope) { + if (!this.getIsTest(scope)) { + return []; + } + + let filepath = this.cleanUpPath(scope.getFilename()); + let dir = path.dirname(filepath); + + let names = fs + .readdirSync(dir) + .filter( + name => + (name.startsWith("head") || name.startsWith("xpcshell-head")) && + name.endsWith(".js") + ) + .map(name => path.join(dir, name)); + return names; + }, + + /** + * Gets all the test manifest data for a directory + * + * @param {String} dir + * The directory + * + * @return {Array} + * An array of objects with file and manifest properties + */ + getManifestsForDirectory(dir) { + if (directoryManifests.has(dir)) { + return directoryManifests.get(dir); + } + + let manifests = []; + let names = []; + try { + names = fs.readdirSync(dir); + } catch (err) { + // Ignore directory not found, it might be faked by a test + if (err.code !== "ENOENT") { + throw err; + } + } + + for (let name of names) { + if (!name.endsWith(".ini")) { + continue; + } + + try { + let manifest = this.iniParser.parse( + fs.readFileSync(path.join(dir, name), "utf8").split("\n") + ); + manifests.push({ + file: path.join(dir, name), + manifest, + }); + } catch (e) {} + } + + directoryManifests.set(dir, manifests); + return manifests; + }, + + /** + * Gets the manifest file a test is listed in + * + * @param {RuleContext} scope + * You should pass this from within a rule + * e.g. helpers.getIsHeadFile(context) + * + * @return {String} + * The path to the test manifest file + */ + getTestManifest(scope) { + let filepath = this.cleanUpPath(scope.getFilename()); + + let dir = path.dirname(filepath); + let filename = path.basename(filepath); + + for (let manifest of this.getManifestsForDirectory(dir)) { + if (filename in manifest.manifest) { + return manifest.file; + } + } + + return null; + }, + + /** + * Check whether we are in a test of some kind. + * + * @param {RuleContext} scope + * You should pass this from within a rule + * e.g. helpers.getIsTest(context) + * + * @return {Boolean} + * True or false + */ + getIsTest(scope) { + // Regardless of the manifest name being in a manifest means we're a test. + let manifest = this.getTestManifest(scope); + if (manifest) { + return true; + } + + return !!this.getTestType(scope); + }, + + /** + * Gets the type of test or null if this isn't a test. + * + * @param {RuleContext} scope + * You should pass this from within a rule + * e.g. helpers.getIsHeadFile(context) + * + * @return {String or null} + * Test type: xpcshell, browser, chrome, mochitest + */ + getTestType(scope) { + let testTypes = ["browser", "xpcshell", "chrome", "mochitest", "a11y"]; + let manifest = this.getTestManifest(scope); + if (manifest) { + let name = path.basename(manifest); + for (let testType of testTypes) { + if (name.startsWith(testType)) { + return testType; + } + } + } + + let filepath = this.cleanUpPath(scope.getFilename()); + let filename = path.basename(filepath); + + if (filename.startsWith("browser_")) { + return "browser"; + } + + if (filename.startsWith("test_")) { + let parent = path.basename(path.dirname(filepath)); + for (let testType of testTypes) { + if (parent.startsWith(testType)) { + return testType; + } + } + + // It likely is a test, we're just not sure what kind. + return "unknown"; + } + + // Likely not a test + return null; + }, + + getIsWorker(filePath) { + let filename = path.basename(this.cleanUpPath(filePath)).toLowerCase(); + + return filename.includes("worker"); + }, + + /** + * Gets the root directory of the repository by walking up directories from + * this file until a .eslintignore file is found. If this fails, the same + * procedure will be attempted from the current working dir. + * @return {String} The absolute path of the repository directory + */ + get rootDir() { + if (!gRootDir) { + function searchUpForIgnore(dirName, filename) { + let parsed = path.parse(dirName); + while (parsed.root !== dirName) { + if (fs.existsSync(path.join(dirName, filename))) { + return dirName; + } + // Move up a level + dirName = parsed.dir; + parsed = path.parse(dirName); + } + return null; + } + + let possibleRoot = searchUpForIgnore( + path.dirname(module.filename), + ".eslintignore" + ); + if (!possibleRoot) { + possibleRoot = searchUpForIgnore(path.resolve(), ".eslintignore"); + } + if (!possibleRoot) { + possibleRoot = searchUpForIgnore(path.resolve(), "package.json"); + } + if (!possibleRoot) { + // We've couldn't find a root from the module or CWD, so lets just go + // for the CWD. We really don't want to throw if possible, as that + // tends to give confusing results when used with ESLint. + possibleRoot = process.cwd(); + } + + gRootDir = possibleRoot; + } + + return gRootDir; + }, + + /** + * ESLint may be executed from various places: from mach, at the root of the + * repository, or from a directory in the repository when, for instance, + * executed by a text editor's plugin. + * The value returned by context.getFileName() varies because of this. + * This helper function makes sure to return an absolute file path for the + * current context, by looking at process.cwd(). + * @param {Context} context + * @return {String} The absolute path + */ + getAbsoluteFilePath(context) { + var fileName = this.cleanUpPath(context.getFilename()); + var cwd = process.cwd(); + + if (path.isAbsolute(fileName)) { + // Case 2: executed from the repo's root with mach: + // fileName: /path/to/mozilla/repo/a/b/c/d.js + // cwd: /path/to/mozilla/repo + return fileName; + } else if (path.basename(fileName) == fileName) { + // Case 1b: executed from a nested directory, fileName is the base name + // without any path info (happens in Atom with linter-eslint) + return path.join(cwd, fileName); + } + // Case 1: executed form in a nested directory, e.g. from a text editor: + // fileName: a/b/c/d.js + // cwd: /path/to/mozilla/repo/a/b/c + var dirName = path.dirname(fileName); + return cwd.slice(0, cwd.length - dirName.length) + fileName; + }, + + /** + * When ESLint is run from SublimeText, paths retrieved from + * context.getFileName contain leading and trailing double-quote characters. + * These characters need to be removed. + */ + cleanUpPath(pathName) { + return pathName.replace(/^"/, "").replace(/"$/, ""); + }, + + get globalScriptPaths() { + return [ + path.join(this.rootDir, "browser", "base", "content", "browser.xhtml"), + path.join( + this.rootDir, + "browser", + "base", + "content", + "global-scripts.inc" + ), + ]; + }, + + isMozillaCentralBased() { + return fs.existsSync(this.globalScriptPaths[0]); + }, + + getSavedEnvironmentItems(environment) { + return require("./environments/saved-globals.json").environments[ + environment + ]; + }, + + getSavedRuleData(rule) { + return require("./rules/saved-rules-data.json").rulesData[rule]; + }, + + getBuildEnvironment() { + var { execFileSync } = require("child_process"); + var output = execFileSync( + path.join(this.rootDir, "mach"), + ["environment", "--format=json"], + { silent: true } + ); + return JSON.parse(output); + }, + + /** + * Extract the path of require (and require-like) helpers used in DevTools. + */ + getDevToolsRequirePath(node) { + if ( + node.callee.type == "Identifier" && + node.callee.name == "require" && + node.arguments.length == 1 && + node.arguments[0].type == "Literal" + ) { + return node.arguments[0].value; + } else if ( + node.callee.type == "MemberExpression" && + node.callee.property.type == "Identifier" && + (node.callee.property.name == "lazyRequireGetter" || + node.callee.property.name == "lazyImporter") && + node.arguments.length >= 3 && + node.arguments[2].type == "Literal" + ) { + return node.arguments[2].value; + } + return null; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/index.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/index.js new file mode 100644 index 0000000000..c05cb9a089 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/index.js @@ -0,0 +1,72 @@ +/** + * @fileoverview A collection of rules that help enforce JavaScript coding + * standard and avoid common errors in the Mozilla project. + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Plugin Definition +// ------------------------------------------------------------------------------ +module.exports = { + configs: { + "browser-test": require("../lib/configs/browser-test"), + "chrome-test": require("../lib/configs/chrome-test"), + "mochitest-test": require("../lib/configs/mochitest-test"), + recommended: require("../lib/configs/recommended"), + "xpcshell-test": require("../lib/configs/xpcshell-test"), + }, + environments: { + "browser-window": require("../lib/environments/browser-window.js"), + "chrome-worker": require("../lib/environments/chrome-worker.js"), + "frame-script": require("../lib/environments/frame-script.js"), + jsm: require("../lib/environments/jsm.js"), + simpletest: require("../lib/environments/simpletest.js"), + privileged: require("../lib/environments/privileged.js"), + xpcshell: require("../lib/environments/xpcshell.js"), + }, + processors: { + ".xul": require("../lib/processors/xul"), + }, + rules: { + "avoid-Date-timing": require("../lib/rules/avoid-Date-timing"), + "avoid-removeChild": require("../lib/rules/avoid-removeChild"), + "balanced-listeners": require("../lib/rules/balanced-listeners"), + "balanced-observers": require("../lib/rules/balanced-observers"), + "consistent-if-bracing": require("../lib/rules/consistent-if-bracing"), + "import-browser-window-globals": require("../lib/rules/import-browser-window-globals"), + "import-content-task-globals": require("../lib/rules/import-content-task-globals"), + "import-globals": require("../lib/rules/import-globals"), + "import-headjs-globals": require("../lib/rules/import-headjs-globals"), + "mark-exported-symbols-as-used": require("../lib/rules/mark-exported-symbols-as-used"), + "mark-test-function-used": require("../lib/rules/mark-test-function-used"), + "no-aArgs": require("../lib/rules/no-aArgs"), + "no-arbitrary-setTimeout": require("../lib/rules/no-arbitrary-setTimeout"), + "no-compare-against-boolean-literals": require("../lib/rules/no-compare-against-boolean-literals"), + "no-define-cc-etc": require("../lib/rules/no-define-cc-etc"), + "no-task": require("../lib/rules/no-task"), + "no-throw-cr-literal": require("../lib/rules/no-throw-cr-literal"), + "no-useless-parameters": require("../lib/rules/no-useless-parameters"), + "no-useless-removeEventListener": require("../lib/rules/no-useless-removeEventListener"), + "no-useless-run-test": require("../lib/rules/no-useless-run-test"), + "prefer-boolean-length-check": require("../lib/rules/prefer-boolean-length-check"), + "prefer-formatValues": require("../lib/rules/prefer-formatValues"), + "reject-chromeutils-import-null": require("../lib/rules/reject-chromeutils-import-null"), + "reject-importGlobalProperties": require("../lib/rules/reject-importGlobalProperties"), + "reject-relative-requires": require("../lib/rules/reject-relative-requires"), + "reject-some-requires": require("../lib/rules/reject-some-requires"), + "rejects-requires-await": require("../lib/rules/rejects-requires-await"), + "use-cc-etc": require("../lib/rules/use-cc-etc"), + "use-chromeutils-generateqi": require("../lib/rules/use-chromeutils-generateqi"), + "use-chromeutils-import": require("../lib/rules/use-chromeutils-import"), + "use-default-preference-values": require("../lib/rules/use-default-preference-values"), + "use-ownerGlobal": require("../lib/rules/use-ownerGlobal"), + "use-includes-instead-of-indexOf": require("../lib/rules/use-includes-instead-of-indexOf"), + "use-returnValue": require("../lib/rules/use-returnValue"), + "use-services": require("../lib/rules/use-services"), + "var-only-at-top-level": require("../lib/rules/var-only-at-top-level"), + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/processors/processor-helpers.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/processors/processor-helpers.js new file mode 100644 index 0000000000..0f56debe1b --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/processors/processor-helpers.js @@ -0,0 +1,120 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +let sax = require("sax"); + +// Converts sax's error message to something that eslint will understand +let errorRegex = /(.*)\nLine: (\d+)\nColumn: (\d+)\nChar: (.*)/; +function parseError(err) { + let matches = err.message.match(errorRegex); + if (!matches) { + return null; + } + + return { + fatal: true, + message: matches[1], + line: parseInt(matches[2]) + 1, + column: parseInt(matches[3]), + }; +} + +let entityRegex = /&[\w][\w-\.]*;/g; + +// A simple sax listener that generates a tree of element information +function XMLParser(text) { + // Non-strict allows us to ignore many errors from entities and + // preprocessing at the expense of failing to report some XML errors. + // Unfortunately it also throws away the case of tagnames and attributes + let parser = sax.parser(false, { + lowercase: true, + xmlns: true, + }); + + parser.onerror = function(err) { + this.lastError = parseError(err); + }; + + this.parser = parser; + parser.onopentag = this.onOpenTag.bind(this); + parser.onclosetag = this.onCloseTag.bind(this); + parser.ontext = this.onText.bind(this); + parser.onopencdata = this.onOpenCDATA.bind(this); + parser.oncdata = this.onCDATA.bind(this); + parser.oncomment = this.onComment.bind(this); + + this.document = { + local: "#document", + uri: null, + children: [], + comments: [], + }; + this._currentNode = this.document; + + parser.write(text); +} + +XMLParser.prototype = { + parser: null, + + lastError: null, + + onOpenTag(tag) { + let node = { + parentNode: this._currentNode, + local: tag.local, + namespace: tag.uri, + attributes: {}, + children: [], + comments: [], + textContent: "", + textLine: this.parser.line, + textColumn: this.parser.column, + textEndLine: this.parser.line, + }; + + for (let attr of Object.keys(tag.attributes)) { + if (tag.attributes[attr].uri == "") { + node.attributes[attr] = tag.attributes[attr].value; + } + } + + this._currentNode.children.push(node); + this._currentNode = node; + }, + + onCloseTag(tagname) { + this._currentNode.textEndLine = this.parser.line; + this._currentNode = this._currentNode.parentNode; + }, + + addText(text) { + this._currentNode.textContent += text; + }, + + onText(text) { + // Replace entities with some valid JS token. + this.addText(text.replace(entityRegex, "null")); + }, + + onOpenCDATA() { + // Turn the CDATA opening tag into whitespace for indent alignment + this.addText(" ".repeat("<![CDATA[".length)); + }, + + onCDATA(text) { + this.addText(text); + }, + + onComment(text) { + this._currentNode.comments.push(text); + }, +}; + +module.exports = { + XMLParser, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/processors/xul.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/processors/xul.js new file mode 100644 index 0000000000..c486b38e06 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/processors/xul.js @@ -0,0 +1,262 @@ +/** + * @fileoverview Converts inline attributes from XUL into JS + * functions + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +let path = require("path"); +let fs = require("fs"); + +let XMLParser = require("./processor-helpers").XMLParser; + +// Stores any XML parse error +let xmlParseError = null; + +// Stores the lines of JS code generated from the XUL. +let scriptLines = []; +// Stores a map from the synthetic line number to the real line number +// and column offset. +let lineMap = []; + +let includedRanges = []; + +// Deal with ifdefs. This is the state we pretend to have: +const kIfdefStateForLinting = { + MOZ_UPDATER: true, + XP_WIN: true, + MOZ_BUILD_APP_IS_BROWSER: true, + MOZ_SERVICES_SYNC: true, + MOZ_DATA_REPORTING: true, + MOZ_TELEMETRY_REPORTING: true, + MOZ_CRASHREPORTER: true, + MOZ_NORMANDY: true, + MOZ_MAINTENANCE_SERVICE: true, + HAVE_SHELL_SERVICE: true, + MENUBAR_CAN_AUTOHIDE: true, + MOZILLA_OFFICIAL: true, +}; + +// Anything not in the above list is assumed false. +function dealWithIfdefs(text, filename) { + function stripIfdefsFromLines(input, innerFile) { + let outputLines = []; + let inSkippingIfdef = [false]; + for (let i = 0; i < input.length; i++) { + let line = input[i]; + let shouldSkip = inSkippingIfdef.some(x => x); + if (!line.startsWith("#")) { + outputLines.push(shouldSkip ? "" : line); + } else { + if ( + line.startsWith("# ") || + line.startsWith("#filter") || + line == "#" || + line.startsWith("#define") + ) { + outputLines.push(""); + continue; + } + // if this isn't just a comment (which we skip), figure out what to do: + let term = ""; + let negate = false; + if (line.startsWith("#ifdef")) { + term = line.match(/^#ifdef *([A-Z_]+)/); + } else if (line.startsWith("#ifndef")) { + term = line.match(/^#ifndef *([A-Z_]+)/); + negate = true; + } else if (line.startsWith("#if ")) { + term = line.match(/^defined\(([A-Z_]+)\)/); + } else if (line.startsWith("#elifdef")) { + // Replace the old one: + inSkippingIfdef.pop(); + term = line.match(/^#elifdef *([A-Z_]+)/); + } else if (line.startsWith("#else")) { + // Switch the last one around: + let old = inSkippingIfdef.pop(); + inSkippingIfdef.push(!old); + outputLines.push(""); + } else if (line.startsWith("#endif")) { + inSkippingIfdef.pop(); + outputLines.push(""); + } else if (line.startsWith("#expand")) { + // Just strip expansion instructions + outputLines.push(line.substring("#expand ".length)); + } else if (line.startsWith("#include")) { + // Uh oh. + if (!shouldSkip) { + let fileToInclude = line.substr("#include ".length).trim(); + let subpath = path.join(path.dirname(innerFile), fileToInclude); + let contents = fs.readFileSync(subpath, { encoding: "utf-8" }); + contents = contents.split(/\n/); + // Recurse: + contents = stripIfdefsFromLines(contents, subpath); + if (innerFile == filename) { + includedRanges.push({ + start: i, + end: i + contents.length, + filename: subpath, + }); + } + // And insert the resulting lines: + input = input.slice(0, i).concat(contents, input.slice(i + 1)); + // Re-process this line now that we've spliced things in. + i--; + } else { + outputLines.push(""); + } + } else { + throw new Error("Unknown preprocessor directive: " + line); + } + + if (term) { + // We always want the first capturing subgroup: + term = term && term[1]; + if (!negate) { + inSkippingIfdef.push(!kIfdefStateForLinting[term]); + } else { + inSkippingIfdef.push(kIfdefStateForLinting[term]); + } + outputLines.push(""); + // Now just continue; we'll include lines depending on the state of `inSkippingIfdef`. + } + } + } + return outputLines; + } + let lines = text.split(/\n/); + return stripIfdefsFromLines(lines, filename).join("\n"); +} + +function addSyntheticLine(line, linePos, addDisableLine) { + lineMap[scriptLines.length] = { line: linePos }; + scriptLines.push(line + (addDisableLine ? "" : " // eslint-disable-line")); +} + +function recursiveExpand(node) { + for (let [attr, value] of Object.entries(node.attributes)) { + if (attr.startsWith("on")) { + if (attr == "oncommand" && value == ";") { + // Ignore these, see bug 371900 for why people might do this. + continue; + } + // Ignore dashes in the tag name + let nodeDesc = node.local.replace(/-/g, ""); + if (node.attributes.id) { + nodeDesc += "_" + node.attributes.id.replace(/[^a-z]/gi, "_"); + } + if (node.attributes.class) { + nodeDesc += "_" + node.attributes.class.replace(/[^a-z]/gi, "_"); + } + addSyntheticLine("function " + nodeDesc + "(event) {", node.textLine); + let processedLines = value.split(/\r?\n/); + let addlLine = 0; + for (let line of processedLines) { + line = line.replace(/^\s*/, ""); + lineMap[scriptLines.length] = { + // Unfortunately, we only get a line number for the <tag> finishing, + // not for individual attributes. + line: node.textLine + addlLine, + }; + scriptLines.push(line); + addlLine++; + } + addSyntheticLine("}", node.textLine + processedLines.length - 1); + } + } + for (let kid of node.children) { + recursiveExpand(kid); + } +} + +module.exports = { + preprocess(text, filename) { + if (filename.includes(".inc")) { + return []; + } + xmlParseError = null; + // The following rules are annoying in XUL. + // Indent because in multiline attributes it's impossible to understand for the XML parser. + // Semicolons because those shouldn't be required for inline event handlers. + // Quotes because we use doublequotes for attributes so using single quotes + // for strings inside them makes sense. + // No-undef because it's a bunch of work to teach this code how to read + // scripts and get globals from them (though ideally we should do that at some point). + scriptLines = [ + "/* eslint-disable indent */", + "/* eslint-disable indent-legacy */", + "/* eslint-disable semi */", + "/* eslint-disable quotes */", + "/* eslint-disable no-undef */", + ]; + lineMap = scriptLines.map(() => ({ line: 0 })); + includedRanges = []; + // Do C-style preprocessing first: + text = dealWithIfdefs(text, filename); + + let xp = new XMLParser(text); + if (xp.lastError) { + xmlParseError = xp.lastError; + } + let doc = xp.document; + if (!doc) { + return []; + } + let node = doc; + for (let kid of node.children) { + recursiveExpand(kid); + } + + let scriptText = scriptLines.join("\n") + "\n"; + return [scriptText]; + }, + + postprocess(messages, filename) { + // If there was an XML parse error then just return that + if (xmlParseError) { + return [xmlParseError]; + } + + // For every message from every script block update the line to point to the + // correct place. + let errors = []; + for (let i = 0; i < messages.length; i++) { + for (let message of messages[i]) { + // ESLint indexes lines starting at 1 but our arrays start at 0 + let mapped = lineMap[message.line - 1]; + // Ensure we don't modify this by making a copy. We might need it for another failure. + let target = mapped.line; + let includedRange = includedRanges.find( + r => target >= r.start && target <= r.end + ); + // If this came from an #included file, indicate this in the message + if (includedRange) { + target = includedRange.start; + message.message += + " (from included file " + + path.basename(includedRange.filename) + + ")"; + } + // Compensate for line numbers shifting as a result of #include: + let includeBallooning = includedRanges + .filter(r => target >= r.end) + .map(r => r.end - r.start) + .reduce((acc, next) => acc + next, 0); + target -= includeBallooning; + // Add back the 1 to go back to 1-indexing. + message.line = target + 1; + + // We never have column information, unfortunately. + message.column = NaN; + + errors.push(message); + } + } + + return errors; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-Date-timing.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-Date-timing.js new file mode 100644 index 0000000000..4f06390189 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-Date-timing.js @@ -0,0 +1,67 @@ +/** + * @fileoverview Disallow using Date for timing in performance sensitive code + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = { + meta: { + docs: { + description: "disallow use of Date for timing measurements", + category: "Best Practices", + }, + schema: [], + }, + + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + create(context) { + return { + CallExpression(node) { + let callee = node.callee; + if ( + callee.type !== "MemberExpression" || + callee.object.type !== "Identifier" || + callee.object.name !== "Date" || + callee.property.type !== "Identifier" || + callee.property.name !== "now" + ) { + return; + } + + context.report( + node, + "use performance.now() instead of Date.now() for timing " + + "measurements" + ); + }, + + NewExpression(node) { + let callee = node.callee; + if ( + callee.type !== "Identifier" || + callee.name !== "Date" || + node.arguments.length > 0 + ) { + return; + } + + context.report( + node, + "use performance.now() instead of new Date() for timing " + + "measurements" + ); + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-removeChild.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-removeChild.js new file mode 100644 index 0000000000..99d0ff5027 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/avoid-removeChild.js @@ -0,0 +1,64 @@ +/** + * @fileoverview Reject using element.parentNode.removeChild(element) when + * element.remove() can be used instead. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var helpers = require("../helpers"); + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + CallExpression(node) { + let callee = node.callee; + if ( + callee.type !== "MemberExpression" || + callee.property.type !== "Identifier" || + callee.property.name != "removeChild" || + node.arguments.length != 1 + ) { + return; + } + + if ( + callee.object.type == "MemberExpression" && + callee.object.property.type == "Identifier" && + callee.object.property.name == "parentNode" && + helpers.getASTSource(callee.object.object, context) == + helpers.getASTSource(node.arguments[0]) + ) { + context.report( + node, + "use element.remove() instead of " + + "element.parentNode.removeChild(element)" + ); + } + + if ( + node.arguments[0].type == "MemberExpression" && + node.arguments[0].property.type == "Identifier" && + node.arguments[0].property.name == "firstChild" && + helpers.getASTSource(callee.object, context) == + helpers.getASTSource(node.arguments[0].object) + ) { + context.report( + node, + "use element.firstChild.remove() instead of " + + "element.removeChild(element.firstChild)" + ); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/balanced-listeners.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/balanced-listeners.js new file mode 100644 index 0000000000..b6fb25139a --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/balanced-listeners.js @@ -0,0 +1,147 @@ +/** + * @fileoverview Check that there's a removeEventListener for each + * addEventListener and an off for each on. + * Note that for now, this rule is rather simple in that it only checks that + * for each event name there is both an add and remove listener. It doesn't + * check that these are called on the right objects or with the same callback. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Helpers + // --------------------------------------------------------------------------- + + var DICTIONARY = { + addEventListener: "removeEventListener", + on: "off", + }; + // Invert this dictionary to make it easy later. + var INVERTED_DICTIONARY = {}; + for (var i in DICTIONARY) { + INVERTED_DICTIONARY[DICTIONARY[i]] = i; + } + + // Collect the add/remove listeners in these 2 arrays. + var addedListeners = []; + var removedListeners = []; + + function addAddedListener(node) { + var capture = false; + let options = node.arguments[2]; + if (options) { + if (options.type == "ObjectExpression") { + if ( + options.properties.some( + p => p.key.name == "once" && p.value.value === true + ) + ) { + // No point in adding listeners using the 'once' option. + return; + } + capture = options.properties.some( + p => p.key.name == "capture" && p.value.value === true + ); + } else { + capture = options.value; + } + } + addedListeners.push({ + functionName: node.callee.property.name, + type: node.arguments[0].value, + node: node.callee.property, + useCapture: capture, + }); + } + + function addRemovedListener(node) { + var capture = false; + let options = node.arguments[2]; + if (options) { + if (options.type == "ObjectExpression") { + capture = options.properties.some( + p => p.key.name == "capture" && p.value.value === true + ); + } else { + capture = options.value; + } + } + removedListeners.push({ + functionName: node.callee.property.name, + type: node.arguments[0].value, + useCapture: capture, + }); + } + + function getUnbalancedListeners() { + var unbalanced = []; + + for (var j = 0; j < addedListeners.length; j++) { + if (!hasRemovedListener(addedListeners[j])) { + unbalanced.push(addedListeners[j]); + } + } + addedListeners = removedListeners = []; + + return unbalanced; + } + + function hasRemovedListener(addedListener) { + for (var k = 0; k < removedListeners.length; k++) { + var listener = removedListeners[k]; + if ( + DICTIONARY[addedListener.functionName] === listener.functionName && + addedListener.type === listener.type && + addedListener.useCapture === listener.useCapture + ) { + return true; + } + } + + return false; + } + + // --------------------------------------------------------------------------- + // Public + // --------------------------------------------------------------------------- + + return { + CallExpression(node) { + if (node.arguments.length === 0) { + return; + } + + if (node.callee.type === "MemberExpression") { + var listenerMethodName = node.callee.property.name; + + if (DICTIONARY.hasOwnProperty(listenerMethodName)) { + addAddedListener(node); + } else if (INVERTED_DICTIONARY.hasOwnProperty(listenerMethodName)) { + addRemovedListener(node); + } + } + }, + + "Program:exit": function() { + getUnbalancedListeners().forEach(function(listener) { + context.report( + listener.node, + "No corresponding '{{functionName}}({{type}})' was found.", + { + functionName: DICTIONARY[listener.functionName], + type: listener.type, + } + ); + }); + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/balanced-observers.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/balanced-observers.js new file mode 100644 index 0000000000..f714b31cda --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/balanced-observers.js @@ -0,0 +1,119 @@ +/** + * @fileoverview Check that there's a Services.(prefs|obs).removeObserver for + * each addObserver. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Helpers + // --------------------------------------------------------------------------- + + var addedObservers = []; + var removedObservers = []; + + function getObserverAPI(node) { + const object = node.callee.object; + if ( + object.type == "MemberExpression" && + object.property.type == "Identifier" + ) { + return object.property.name; + } + return null; + } + + function isServicesObserver(api) { + return api == "obs" || api == "prefs"; + } + + function getObservableName(node, api) { + if (api === "obs") { + return node.arguments[1].value; + } + return node.arguments[0].value; + } + + function addAddedObserver(node) { + const api = getObserverAPI(node); + if (!isServicesObserver(api)) { + return; + } + + addedObservers.push({ + functionName: node.callee.property.name, + observable: getObservableName(node, api), + node: node.callee.property, + }); + } + + function addRemovedObserver(node) { + const api = getObserverAPI(node); + if (!isServicesObserver(api)) { + return; + } + + removedObservers.push({ + functionName: node.callee.property.name, + observable: getObservableName(node, api), + }); + } + + function getUnbalancedObservers() { + const unbalanced = addedObservers.filter( + observer => !hasRemovedObserver(observer) + ); + addedObservers = removedObservers = []; + + return unbalanced; + } + + function hasRemovedObserver(addedObserver) { + return removedObservers.some( + observer => addedObserver.observable === observer.observable + ); + } + + // --------------------------------------------------------------------------- + // Public + // --------------------------------------------------------------------------- + + return { + CallExpression(node) { + if (node.arguments.length === 0) { + return; + } + + if (node.callee.type === "MemberExpression") { + var methodName = node.callee.property.name; + + if (methodName === "addObserver") { + addAddedObserver(node); + } else if (methodName === "removeObserver") { + addRemovedObserver(node); + } + } + }, + + "Program:exit": function() { + getUnbalancedObservers().forEach(function(observer) { + context.report( + observer.node, + "No corresponding 'removeObserver(\"{{observable}}\")' was found.", + { + observable: observer.observable, + } + ); + }); + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/consistent-if-bracing.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/consistent-if-bracing.js new file mode 100644 index 0000000000..af51dcea1f --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/consistent-if-bracing.js @@ -0,0 +1,49 @@ +/** + * @fileoverview checks if/else if/else bracing is consistent + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +module.exports = { + meta: { + messages: { + consistentIfBracing: "Bracing of if..else bodies should be consistent.", + }, + }, + + create(context) { + return { + IfStatement(node) { + if (node.parent.type !== "IfStatement") { + let types = new Set(); + for ( + let currentNode = node; + currentNode; + currentNode = currentNode.alternate + ) { + let type = currentNode.consequent.type; + types.add(type == "BlockStatement" ? "Block" : "NotBlock"); + if ( + currentNode.alternate && + currentNode.alternate.type !== "IfStatement" + ) { + type = currentNode.alternate.type; + types.add(type == "BlockStatement" ? "Block" : "NotBlock"); + break; + } + } + if (types.size > 1) { + context.report({ + node, + messageId: "consistentIfBracing", + }); + } + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-browser-window-globals.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-browser-window-globals.js new file mode 100644 index 0000000000..bcbdb3ec54 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-browser-window-globals.js @@ -0,0 +1,49 @@ +/** + * @fileoverview For scripts included in browser-window, this will automatically + * inject the browser-window global scopes into the file. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var path = require("path"); +var helpers = require("../helpers"); +var browserWindowEnv = require("../environments/browser-window"); + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // --------------------------------------------------------------------------- + + return { + Program(node) { + let filePath = helpers.getAbsoluteFilePath(context); + let relativePath = path.relative(helpers.rootDir, filePath); + // We need to translate the path on Windows, due to the change + // from \ to /, and browserjsScripts assumes Posix. + if (path.win32) { + relativePath = relativePath.split(path.sep).join("/"); + } + + if ( + browserWindowEnv.browserjsScripts && + browserWindowEnv.browserjsScripts.includes(relativePath) + ) { + for (let global in browserWindowEnv.globals) { + helpers.addVarToScope( + global, + context.getScope(), + browserWindowEnv.globals[global] + ); + } + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-content-task-globals.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-content-task-globals.js new file mode 100644 index 0000000000..b8545b45f8 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-content-task-globals.js @@ -0,0 +1,84 @@ +/** + * @fileoverview For ContentTask.spawn, this will automatically declare the + * frame script variables in the global scope. + * Note: due to the way ESLint works, it appears it is only + * easy to declare these variables on a file-global scope, rather + * than function global. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var helpers = require("../helpers"); +var frameScriptEnv = require("../environments/frame-script"); + +// The global environment of SpecialPowers.spawn tasks is +// controlled by the Sandbox environment created by +// SpecialPowersSandbox.jsm. This list should be kept in sync with +// that module. +var sandboxGlobals = [ + "Assert", + "Blob", + "BrowsingContext", + "ChromeUtils", + "ContentTaskUtils", + "EventUtils", + "Services", + "TextDecoder", + "TextEncoder", + "URL", + "assert", + "info", + "is", + "isnot", + "ok", + "todo", + "todo_is", +]; + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // --------------------------------------------------------------------------- + + return { + "CallExpression[callee.object.name='ContentTask'][callee.property.name='spawn']": function( + node + ) { + for (let global in frameScriptEnv.globals) { + helpers.addVarToScope( + global, + context.getScope(), + frameScriptEnv.globals[global] + ); + } + }, + "CallExpression[callee.object.name='SpecialPowers'][callee.property.name='spawn']": function( + node + ) { + let globals = [...sandboxGlobals, "SpecialPowers", "content", "docShell"]; + for (let global of globals) { + helpers.addVarToScope(global, context.getScope(), false); + } + }, + "CallExpression[callee.object.name='SpecialPowers'][callee.property.name='spawnChrome']": function( + node + ) { + let globals = [ + ...sandboxGlobals, + "browsingContext", + "windowGlobalParent", + ]; + for (let global of globals) { + helpers.addVarToScope(global, context.getScope(), false); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-globals.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-globals.js new file mode 100644 index 0000000000..053a9e702f --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-globals.js @@ -0,0 +1,15 @@ +/** + * @fileoverview Discovers all globals for the current file. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = require("../globals").getESLintGlobalParser; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-headjs-globals.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-headjs-globals.js new file mode 100644 index 0000000000..cffd7a4c8e --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/import-headjs-globals.js @@ -0,0 +1,47 @@ +/** + * @fileoverview Import globals from head.js and from any files that were + * imported by head.js (as far as we can correctly resolve the path). + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var fs = require("fs"); +var helpers = require("../helpers"); +var globals = require("../globals"); + +module.exports = function(context) { + function importHead(path, node) { + try { + let stats = fs.statSync(path); + if (!stats.isFile()) { + return; + } + } catch (e) { + return; + } + + let newGlobals = globals.getGlobalsForFile(path); + helpers.addGlobals(newGlobals, context.getScope()); + } + + // --------------------------------------------------------------------------- + // Public + // --------------------------------------------------------------------------- + + return { + Program(node) { + let heads = helpers.getTestHeadFiles(context); + for (let head of heads) { + importHead(head, node); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-exported-symbols-as-used.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-exported-symbols-as-used.js new file mode 100644 index 0000000000..c535a54a16 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-exported-symbols-as-used.js @@ -0,0 +1,83 @@ +/** + * @fileoverview Simply marks exported symbols as used. Designed for use in + * .jsm files only. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +function markArrayElementsAsUsed(context, node, expression) { + if (expression.type != "ArrayExpression") { + context.report({ + node, + message: "Unexpected assignment of non-Array to EXPORTED_SYMBOLS", + }); + return; + } + + for (let element of expression.elements) { + context.markVariableAsUsed(element.value); + } + // Also mark EXPORTED_SYMBOLS as used. + context.markVariableAsUsed("EXPORTED_SYMBOLS"); +} + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // Ignore assignments not in the global scope, e.g. where special module + // definitions are required due to having different ways of importing files, + // e.g. osfile. + function isGlobalScope() { + return !context.getScope().upper; + } + + // --------------------------------------------------------------------------- + // Public + // --------------------------------------------------------------------------- + + return { + AssignmentExpression(node, parents) { + if ( + node.operator === "=" && + node.left.type === "MemberExpression" && + node.left.object.type === "ThisExpression" && + node.left.property.name === "EXPORTED_SYMBOLS" && + isGlobalScope() + ) { + markArrayElementsAsUsed(context, node, node.right); + } + }, + + VariableDeclaration(node, parents) { + if (!isGlobalScope()) { + return; + } + + for (let item of node.declarations) { + if ( + item.id && + item.id.type == "Identifier" && + item.id.name === "EXPORTED_SYMBOLS" + ) { + if (node.kind === "let") { + // The use of 'let' isn't allowed as the lexical scope may die after + // the script executes. + context.report({ + node, + message: + "EXPORTED_SYMBOLS cannot be declared via `let`. Use `var` or `this.EXPORTED_SYMBOLS =`", + }); + } + + markArrayElementsAsUsed(context, node, item.init); + } + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-test-function-used.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-test-function-used.js new file mode 100644 index 0000000000..0c0dcfdbe5 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-test-function-used.js @@ -0,0 +1,37 @@ +/** + * @fileoverview Simply marks `test` (the test method) or `run_test` as used + * when in mochitests or xpcshell tests respectively. This avoids ESLint telling + * us that the function is never called. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var helpers = require("../helpers"); + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // --------------------------------------------------------------------------- + + return { + Program() { + let testType = helpers.getTestType(context); + if (testType == "browser") { + context.markVariableAsUsed("test"); + return; + } + + if (testType == "xpcshell") { + context.markVariableAsUsed("run_test"); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-aArgs.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-aArgs.js new file mode 100644 index 0000000000..af7fe06336 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-aArgs.js @@ -0,0 +1,56 @@ +/** + * @fileoverview warns against using hungarian notation in function arguments + * (i.e. aArg). + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Helpers + // --------------------------------------------------------------------------- + + function isPrefixed(name) { + return name.length >= 2 && /^a[A-Z]/.test(name); + } + + function deHungarianize(name) { + return name.substring(1, 2).toLowerCase() + name.substring(2, name.length); + } + + function checkFunction(node) { + for (var i = 0; i < node.params.length; i++) { + var param = node.params[i]; + if (param.name && isPrefixed(param.name)) { + var errorObj = { + name: param.name, + suggestion: deHungarianize(param.name), + }; + context.report( + param, + "Parameter '{{name}}' uses Hungarian Notation, " + + "consider using '{{suggestion}}' instead.", + errorObj + ); + } + } + } + + // --------------------------------------------------------------------------- + // Public + // --------------------------------------------------------------------------- + + return { + FunctionDeclaration: checkFunction, + ArrowFunctionExpression: checkFunction, + FunctionExpression: checkFunction, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-arbitrary-setTimeout.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-arbitrary-setTimeout.js new file mode 100644 index 0000000000..be0b5c5ffb --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-arbitrary-setTimeout.js @@ -0,0 +1,70 @@ +/** + * @fileoverview Reject use of non-zero values in setTimeout + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var helpers = require("../helpers"); +var testTypes = new Set(["browser", "xpcshell"]); + +module.exports = { + meta: { + docs: { + description: "disallow setTimeout with non-zero values in tests", + category: "Best Practices", + }, + schema: [], + }, + + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + create(context) { + return { + CallExpression(node) { + // We don't want to run this on mochitest plain as it already + // prevents flaky setTimeout at runtime. This check is built-in + // to the rule itself as sometimes other tests can live alongside + // plain mochitests and so it can't be configured via eslintrc. + if (!testTypes.has(helpers.getTestType(context))) { + return; + } + + let callee = node.callee; + if (callee.type === "MemberExpression") { + if ( + callee.property.name !== "setTimeout" || + callee.object.name !== "window" || + node.arguments.length < 2 + ) { + return; + } + } else if (callee.type === "Identifier") { + if (callee.name !== "setTimeout" || node.arguments.length < 2) { + return; + } + } else { + return; + } + + let timeout = node.arguments[1]; + if (timeout.type !== "Literal" || timeout.value > 0) { + context.report( + node, + "listen for events instead of setTimeout() " + + "with arbitrary delay" + ); + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-compare-against-boolean-literals.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-compare-against-boolean-literals.js new file mode 100644 index 0000000000..bb48563fff --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-compare-against-boolean-literals.js @@ -0,0 +1,34 @@ +/** + * @fileoverview Restrict comparing against `true` or `false`. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + BinaryExpression(node) { + if ( + ["==", "!="].includes(node.operator) && + (["true", "false"].includes(node.left.raw) || + ["true", "false"].includes(node.right.raw)) + ) { + context.report( + node, + "Don't compare for inexact equality against boolean literals" + ); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-define-cc-etc.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-define-cc-etc.js new file mode 100644 index 0000000000..0b441e4712 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-define-cc-etc.js @@ -0,0 +1,49 @@ +/** + * @fileoverview Reject defining Cc/Ci/Cr/Cu. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +const componentsBlacklist = ["Cc", "Ci", "Cr", "Cu"]; + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + VariableDeclarator(node) { + if ( + node.id.type == "Identifier" && + componentsBlacklist.includes(node.id.name) + ) { + context.report( + node, + `${node.id.name} is now defined in global scope, a separate definition is no longer necessary.` + ); + } + + if (node.id.type == "ObjectPattern") { + for (let property of node.id.properties) { + if ( + property.type == "Property" && + componentsBlacklist.includes(property.value.name) + ) { + context.report( + node, + `${property.value.name} is now defined in global scope, a separate definition is no longer necessary.` + ); + } + } + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-task.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-task.js new file mode 100644 index 0000000000..2bab6e8742 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-task.js @@ -0,0 +1,33 @@ +/** + * @fileoverview Reject common XPCOM methods called with useless optional + * parameters, or non-existent parameters. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + CallExpression(node) { + let callee = node.callee; + if ( + callee.type === "MemberExpression" && + callee.object.type === "Identifier" && + callee.object.name === "Task" + ) { + context.report({ node, message: "Task.jsm is deprecated." }); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-throw-cr-literal.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-throw-cr-literal.js new file mode 100644 index 0000000000..21f27ff130 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-throw-cr-literal.js @@ -0,0 +1,100 @@ +/** + * @fileoverview Rule to prevent throwing bare Cr.ERRORs. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +function isCr(object) { + return object.type === "Identifier" && object.name === "Cr"; +} + +function isComponentsResults(object) { + return ( + object.type === "MemberExpression" && + object.object.type === "Identifier" && + object.object.name === "Components" && + object.property.type === "Identifier" && + object.property.name === "results" + ); +} + +function isNewError(argument) { + return ( + argument.type === "NewExpression" && + argument.callee.type === "Identifier" && + argument.callee.name === "Error" && + argument.arguments.length === 1 + ); +} + +function fixT(context, node, argument, fixer) { + const sourceText = context.getSourceCode().getText(argument); + return fixer.replaceText(node, `Components.Exception("", ${sourceText})`); +} + +module.exports = { + meta: { + fixable: "code", + messages: { + bareCR: "Do not throw bare Cr.ERRORs, use Components.Exception instead", + bareComponentsResults: + "Do not throw bare Components.results.ERRORs, use Components.Exception instead", + newErrorCR: + "Do not pass Cr.ERRORs to new Error(), use Components.Exception instead", + newErrorComponentsResults: + "Do not pass Components.results.ERRORs to new Error(), use Components.Exception instead", + }, + }, + + create(context) { + return { + ThrowStatement(node) { + if (node.argument.type === "MemberExpression") { + const fix = fixT.bind(null, context, node.argument, node.argument); + + if (isCr(node.argument.object)) { + context.report({ + node, + messageId: "bareCR", + fix, + }); + } else if (isComponentsResults(node.argument.object)) { + context.report({ + node, + messageId: "bareComponentsResults", + fix, + }); + } + } else if (isNewError(node.argument)) { + const argument = node.argument.arguments[0]; + + if (argument.type === "MemberExpression") { + const fix = fixT.bind(null, context, node.argument, argument); + + if (isCr(argument.object)) { + context.report({ + node, + messageId: "newErrorCR", + fix, + }); + } else if (isComponentsResults(argument.object)) { + context.report({ + node, + messageId: "newErrorComponentsResults", + fix, + }); + } + } + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-parameters.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-parameters.js new file mode 100644 index 0000000000..4fd0734465 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-parameters.js @@ -0,0 +1,147 @@ +/** + * @fileoverview Reject common XPCOM methods called with useless optional + * parameters, or non-existent parameters. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = { + meta: { + type: "suggestion", + fixable: "code", + }, + create(context) { + function getRangeAfterArgToEnd(argNumber, args) { + let sourceCode = context.getSourceCode(); + return [ + sourceCode.getTokenAfter(args[argNumber]).range[0], + args[args.length - 1].range[1], + ]; + } + + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + CallExpression(node) { + let callee = node.callee; + if ( + callee.type !== "MemberExpression" || + callee.property.type !== "Identifier" + ) { + return; + } + + let isFalse = arg => arg.type === "Literal" && arg.value === false; + let isFalsy = arg => arg.type === "Literal" && !arg.value; + let isBool = arg => + arg.type === "Literal" && (arg.value === false || arg.value === true); + let name = callee.property.name; + let args = node.arguments; + + if ( + ["addEventListener", "removeEventListener", "addObserver"].includes( + name + ) && + args.length === 3 && + isFalse(args[2]) + ) { + context.report({ + node, + fix: fixer => { + return fixer.removeRange(getRangeAfterArgToEnd(1, args)); + }, + message: `${name}'s third parameter can be omitted when it's false.`, + }); + } + + if (name === "clearUserPref" && args.length > 1) { + context.report({ + node, + fix: fixer => { + return fixer.removeRange(getRangeAfterArgToEnd(0, args)); + }, + message: `${name} takes only 1 parameter.`, + }); + } + + if (name === "removeObserver" && args.length === 3 && isBool(args[2])) { + context.report({ + node, + fix: fixer => { + return fixer.removeRange(getRangeAfterArgToEnd(1, args)); + }, + message: "removeObserver only takes 2 parameters.", + }); + } + + if (name === "appendElement" && args.length === 2 && isFalse(args[1])) { + context.report({ + node, + fix: fixer => { + return fixer.removeRange(getRangeAfterArgToEnd(0, args)); + }, + message: `${name}'s second parameter can be omitted when it's false.`, + }); + } + + if ( + name === "notifyObservers" && + args.length === 3 && + isFalsy(args[2]) + ) { + context.report({ + node, + fix: fixer => { + return fixer.removeRange(getRangeAfterArgToEnd(1, args)); + }, + message: `${name}'s third parameter can be omitted.`, + }); + } + + if ( + name === "getComputedStyle" && + args.length === 2 && + isFalsy(args[1]) + ) { + context.report({ + node, + fix: fixer => { + return fixer.removeRange(getRangeAfterArgToEnd(0, args)); + }, + message: "getComputedStyle's second parameter can be omitted.", + }); + } + + if ( + name === "newURI" && + args.length > 1 && + isFalsy(args[args.length - 1]) + ) { + context.report({ + node, + fix: fixer => { + if (args.length > 2 && isFalsy(args[args.length - 2])) { + return fixer.removeRange(getRangeAfterArgToEnd(0, args)); + } + + return fixer.removeRange( + getRangeAfterArgToEnd(args.length - 2, args) + ); + }, + message: "newURI's last parameters are optional.", + }); + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-removeEventListener.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-removeEventListener.js new file mode 100644 index 0000000000..e58edfcb98 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-removeEventListener.js @@ -0,0 +1,64 @@ +/** + * @fileoverview Reject calls to removeEventListenter where {once: true} could + * be used instead. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + CallExpression(node) { + let callee = node.callee; + if ( + callee.type !== "MemberExpression" || + callee.property.type !== "Identifier" || + callee.property.name !== "addEventListener" || + node.arguments.length == 4 + ) { + return; + } + + let listener = node.arguments[1]; + if ( + !listener || + listener.type != "FunctionExpression" || + !listener.body || + listener.body.type != "BlockStatement" || + !listener.body.body.length || + listener.body.body[0].type != "ExpressionStatement" || + listener.body.body[0].expression.type != "CallExpression" + ) { + return; + } + + let call = listener.body.body[0].expression; + if ( + call.callee.type == "MemberExpression" && + call.callee.property.type == "Identifier" && + call.callee.property.name == "removeEventListener" && + ((call.arguments[0].type == "Literal" && + call.arguments[0].value == node.arguments[0].value) || + (call.arguments[0].type == "Identifier" && + call.arguments[0].name == node.arguments[0].name)) + ) { + context.report( + call, + "use {once: true} instead of removeEventListener as " + + "the first instruction of the listener" + ); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-run-test.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-run-test.js new file mode 100644 index 0000000000..d16757c347 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-useless-run-test.js @@ -0,0 +1,72 @@ +/** + * @fileoverview Reject run_test() definitions where they aren't necessary. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = { + meta: { + type: "suggestion", + fixable: "code", + }, + create(context) { + return { + "Program > FunctionDeclaration": function(node) { + if ( + node.id.name === "run_test" && + node.body.type === "BlockStatement" && + node.body.body.length === 1 && + node.body.body[0].type === "ExpressionStatement" && + node.body.body[0].expression.type === "CallExpression" && + node.body.body[0].expression.callee.name === "run_next_test" + ) { + context.report({ + node, + fix: fixer => { + let sourceCode = context.getSourceCode(); + let startNode; + if (sourceCode.getCommentsBefore) { + // ESLint 4 has getCommentsBefore. + startNode = sourceCode.getCommentsBefore(node); + } else if (node && node.body && node.leadingComments) { + // This is for ESLint 3. + startNode = node.leadingComments; + } + + // If we have comments, we want the start node to be the comments, + // rather than the token before the comments, so that we don't + // remove the comments - for run_test, these are likely to be useful + // information about the test. + if (startNode && startNode.length) { + startNode = startNode[startNode.length - 1]; + } else { + startNode = sourceCode.getTokenBefore(node); + } + + return fixer.removeRange([ + // If there's no startNode, we fall back to zero, i.e. start of + // file. + startNode ? startNode.range[1] + 1 : 0, + // We know the function is a block and it'll end with }. Normally + // there's a new line after that, so just advance past it. This + // may be slightly not dodgy in some cases, but covers the existing + // cases. + node.range[1] + 1, + ]); + }, + message: + "Useless run_test function - only contains run_next_test; whole function can be removed", + }); + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/prefer-boolean-length-check.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/prefer-boolean-length-check.js new file mode 100644 index 0000000000..543d07b765 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/prefer-boolean-length-check.js @@ -0,0 +1,130 @@ +/** + * @fileoverview Prefer boolean length check + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- +function funcForBooleanLength(context, node, conditionCheck) { + let newText = ""; + const sourceCode = context.getSourceCode(); + switch (node.operator) { + case ">": + if (node.right.value == 0) { + if (conditionCheck) { + newText = sourceCode.getText(node.left); + } else { + newText = "!!" + sourceCode.getText(node.left); + } + } else { + newText = "!" + sourceCode.getText(node.right); + } + break; + case "<": + if (node.right.value == 0) { + newText = "!" + sourceCode.getText(node.left); + } else if (conditionCheck) { + newText = sourceCode.getText(node.right); + } else { + newText = "!!" + sourceCode.getText(node.right); + } + break; + case "==": + if (node.right.value == 0) { + newText = "!" + sourceCode.getText(node.left); + } else { + newText = "!" + sourceCode.getText(node.right); + } + break; + case "!=": + if (node.right.value == 0) { + if (conditionCheck) { + newText = sourceCode.getText(node.left); + } else { + newText = "!!" + sourceCode.getText(node.left); + } + } else if (conditionCheck) { + newText = sourceCode.getText(node.right); + } else { + newText = "!!" + sourceCode.getText(node.right); + } + break; + } + return newText; +} + +module.exports = { + meta: { + type: "suggestion", + fixable: "code", + }, + create(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + const conditionStatement = [ + "IfStatement", + "WhileStatement", + "DoWhileStatement", + "ForStatement", + "ForInStatement", + "ConditionalExpression", + ]; + + return { + BinaryExpression(node) { + if ( + ["==", "!=", ">", "<"].includes(node.operator) && + ((node.right.type == "Literal" && + node.right.value == 0 && + node.left.property && + node.left.property.name == "length") || + (node.left.type == "Literal" && + node.left.value == 0 && + node.right.property && + node.right.property.name == "length")) + ) { + if ( + conditionStatement.includes(node.parent.type) || + (node.parent.type == "LogicalExpression" && + conditionStatement.includes(node.parent.parent.type)) + ) { + context.report({ + node, + fix: fixer => { + let generateExpression = funcForBooleanLength( + context, + node, + true + ); + + return fixer.replaceText(node, generateExpression); + }, + message: "Prefer boolean length check", + }); + } else { + context.report({ + node, + fix: fixer => { + let generateExpression = funcForBooleanLength( + context, + node, + false + ); + return fixer.replaceText(node, generateExpression); + }, + message: "Prefer boolean length check", + }); + } + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/prefer-formatValues.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/prefer-formatValues.js new file mode 100644 index 0000000000..45b8c40901 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/prefer-formatValues.js @@ -0,0 +1,96 @@ +/** + * @fileoverview Reject multiple calls to document.l10n.formatValue in the same + * code block. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +function isIdentifier(node, id) { + return node && node.type === "Identifier" && node.name === id; +} + +/** + * As we enter blocks new sets are pushed onto this stack and then popped when + * we exit the block. + */ +const BlockStack = []; + +module.exports = { + meta: { + docs: { + description: "disallow multiple document.l10n.formatValue calls", + category: "Best Practices", + }, + schema: [], + }, + + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + create(context) { + function enterBlock() { + BlockStack.push(new Set()); + } + + function exitBlock() { + let calls = BlockStack.pop(); + if (calls.size > 1) { + for (let callNode of calls) { + context.report( + callNode, + "prefer to use a single document.l10n.formatValues call instead " + + "of multiple calls to document.l10n.formatValue or document.l10n.formatValues" + ); + } + } + } + + return { + Program: enterBlock, + "Program:exit": exitBlock, + BlockStatement: enterBlock, + "BlockStatement:exit": exitBlock, + + CallExpression(node) { + if (!BlockStack.length) { + context.report(node, "call expression found outside of known block"); + } + + let callee = node.callee; + if (callee.type !== "MemberExpression") { + return; + } + + if ( + !isIdentifier(callee.property, "formatValue") && + !isIdentifier(callee.property, "formatValues") + ) { + return; + } + + if (callee.object.type !== "MemberExpression") { + return; + } + + if ( + !isIdentifier(callee.object.object, "document") || + !isIdentifier(callee.object.property, "l10n") + ) { + return; + } + + let calls = BlockStack[BlockStack.length - 1]; + calls.add(node); + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-chromeutils-import-null.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-chromeutils-import-null.js new file mode 100644 index 0000000000..b7fd1593b8 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-chromeutils-import-null.js @@ -0,0 +1,44 @@ +/** + * @fileoverview Reject calls to ChromeUtils.import(..., null). This allows to + * retrieve the global object for the JSM, instead we should rely on explicitly + * exported symbols. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +function isIdentifier(node, id) { + return node && node.type === "Identifier" && node.name === id; +} + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + CallExpression(node) { + let { callee } = node; + if ( + isIdentifier(callee.object, "ChromeUtils") && + isIdentifier(callee.property, "import") && + node.arguments.length >= 2 && + node.arguments[1].type == "Literal" && + node.arguments[1].raw == "null" + ) { + context.report( + node, + "ChromeUtils.import should not be called with (..., null) to " + + "retrieve the JSM global object. Rely on explicit exports instead." + ); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-importGlobalProperties.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-importGlobalProperties.js new file mode 100644 index 0000000000..a2f495ddb7 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-importGlobalProperties.js @@ -0,0 +1,62 @@ +/** + * @fileoverview Reject use of Cu.importGlobalProperties + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +const privilegedGlobals = Object.keys( + require("../environments/privileged.js").globals +); + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = { + meta: { + messages: { + unexpectedCall: "Unexpected call to Cu.importGlobalProperties", + unexpectedCallWebIdl: + "Unnecessary call to Cu.importGlobalProperties (webidl names are automatically imported)", + }, + schema: [ + { + // XXX Better name? + enum: ["everything", "allownonwebidl"], + }, + ], + type: "problem", + }, + + create(context) { + return { + CallExpression(node) { + if (node.callee.type !== "MemberExpression") { + return; + } + let memexp = node.callee; + if ( + memexp.object.type === "Identifier" && + // Only Cu, not Components.utils; see bug 1230369. + memexp.object.name === "Cu" && + memexp.property.type === "Identifier" && + memexp.property.name === "importGlobalProperties" + ) { + if (context.options.includes("allownonwebidl")) { + for (let element of node.arguments[0].elements) { + if (privilegedGlobals.includes(element.value)) { + context.report({ node, messageId: "unexpectedCallWebIdl" }); + } + } + } else { + context.report({ node, messageId: "unexpectedCall" }); + } + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-relative-requires.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-relative-requires.js new file mode 100644 index 0000000000..eb100b13fa --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-relative-requires.js @@ -0,0 +1,34 @@ +/** + * @fileoverview Reject some uses of require. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var helpers = require("../helpers"); + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + const isRelativePath = function(path) { + return path.startsWith("./") || path.startsWith("../"); + }; + + return { + CallExpression(node) { + const path = helpers.getDevToolsRequirePath(node); + if (path && isRelativePath(path)) { + context.report(node, "relative paths are not allowed with require()"); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-some-requires.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-some-requires.js new file mode 100644 index 0000000000..ab31069293 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-some-requires.js @@ -0,0 +1,35 @@ +/** + * @fileoverview Reject some uses of require. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var helpers = require("../helpers"); + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + if (typeof context.options[0] !== "string") { + throw new Error("reject-some-requires expects a regexp"); + } + const RX = new RegExp(context.options[0]); + + return { + CallExpression(node) { + const path = helpers.getDevToolsRequirePath(node); + if (path && RX.test(path)) { + context.report(node, `require(${path}) is not allowed`); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/rejects-requires-await.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/rejects-requires-await.js new file mode 100644 index 0000000000..1bc0bcd58d --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/rejects-requires-await.js @@ -0,0 +1,42 @@ +/** + * @fileoverview Reject use of Cu.importGlobalProperties + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +module.exports = { + meta: { + messages: { + rejectRequiresAwait: "Assert.rejects needs to be preceded by await.", + }, + }, + + create(context) { + return { + CallExpression(node) { + if (node.callee.type === "MemberExpression") { + let memexp = node.callee; + if ( + memexp.object.type === "Identifier" && + memexp.object.name === "Assert" && + memexp.property.type === "Identifier" && + memexp.property.name === "rejects" + ) { + // We have ourselves an Assert.rejects. + + if (node.parent.type !== "AwaitExpression") { + context.report({ + node, + messageId: "rejectRequiresAwait", + }); + } + } + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-cc-etc.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-cc-etc.js new file mode 100644 index 0000000000..053f379adb --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-cc-etc.js @@ -0,0 +1,44 @@ +/** + * @fileoverview Reject use of Components.classes etc, prefer the shorthand instead. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +const componentsMap = { + classes: "Cc", + interfaces: "Ci", + results: "Cr", + utils: "Cu", +}; + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + MemberExpression(node) { + if ( + node.object.type === "Identifier" && + node.object.name === "Components" && + node.property.type === "Identifier" && + Object.getOwnPropertyNames(componentsMap).includes(node.property.name) + ) { + context.report( + node, + `Use ${componentsMap[node.property.name]} rather than Components.${ + node.property.name + }` + ); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-chromeutils-generateqi.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-chromeutils-generateqi.js new file mode 100644 index 0000000000..6d72f785de --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-chromeutils-generateqi.js @@ -0,0 +1,103 @@ +/** + * @fileoverview Reject use of XPCOMUtils.generateQI and JS-implemented + * QueryInterface methods in favor of ChromeUtils. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +function isIdentifier(node, id) { + return node && node.type === "Identifier" && node.name === id; +} + +function isMemberExpression(node, object, member) { + return ( + node.type === "MemberExpression" && + isIdentifier(node.object, object) && + isIdentifier(node.property, member) + ); +} + +const MSG_NO_JS_QUERY_INTERFACE = + "Please use ChromeUtils.generateQI rather than manually creating " + + "JavaScript QueryInterface functions"; + +const MSG_NO_XPCOMUTILS_GENERATEQI = + "Please use ChromeUtils.generateQI instead of XPCOMUtils.generateQI"; + +function funcToGenerateQI(context, node) { + const sourceCode = context.getSourceCode(); + const text = sourceCode.getText(node); + + let interfaces = []; + let match; + let re = /\bCi\.([a-zA-Z0-9]+)\b|\b(nsI[A-Z][a-zA-Z0-9]+)\b/g; + while ((match = re.exec(text))) { + interfaces.push(match[1] || match[2]); + } + + let ifaces = interfaces + .filter(iface => iface != "nsISupports") + .map(iface => JSON.stringify(iface)) + .join(", "); + + return `ChromeUtils.generateQI([${ifaces}])`; +} + +module.exports = { + meta: { + fixable: "code", + }, + + create(context) { + return { + CallExpression(node) { + let { callee } = node; + if (isMemberExpression(callee, "XPCOMUtils", "generateQI")) { + context.report({ + node, + message: MSG_NO_XPCOMUTILS_GENERATEQI, + fix(fixer) { + return fixer.replaceText(callee, "ChromeUtils.generateQI"); + }, + }); + } + }, + + "AssignmentExpression > MemberExpression[property.name='QueryInterface']": function( + node + ) { + const { right } = node.parent; + if (right.type === "FunctionExpression") { + context.report({ + node: node.parent, + message: MSG_NO_JS_QUERY_INTERFACE, + fix(fixer) { + return fixer.replaceText(right, funcToGenerateQI(context, right)); + }, + }); + } + }, + + "Property[key.name='QueryInterface'][value.type='FunctionExpression']": function( + node + ) { + context.report({ + node, + message: MSG_NO_JS_QUERY_INTERFACE, + fix(fixer) { + let generateQI = funcToGenerateQI(context, node.value); + return fixer.replaceText(node, `QueryInterface: ${generateQI}`); + }, + }); + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-chromeutils-import.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-chromeutils-import.js new file mode 100644 index 0000000000..eefff06e11 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-chromeutils-import.js @@ -0,0 +1,89 @@ +/** + * @fileoverview Reject use of Cu.import and XPCOMUtils.defineLazyModuleGetter + * in favor of ChromeUtils. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +function isIdentifier(node, id) { + return node && node.type === "Identifier" && node.name === id; +} + +function isMemberExpression(node, object, member) { + return ( + node.type === "MemberExpression" && + isIdentifier(node.object, object) && + isIdentifier(node.property, member) + ); +} + +module.exports = { + meta: { + schema: [ + { + type: "object", + properties: { + allowCu: { + type: "boolean", + }, + }, + additionalProperties: false, + }, + ], + fixable: "code", + }, + + create(context) { + return { + CallExpression(node) { + if (node.callee.type !== "MemberExpression") { + return; + } + + let { allowCu } = context.options[0] || {}; + let { callee } = node; + + // Is the expression starting with `Cu` or `Components.utils`? + if ( + ((!allowCu && isIdentifier(callee.object, "Cu")) || + isMemberExpression(callee.object, "Components", "utils")) && + isIdentifier(callee.property, "import") + ) { + context.report({ + node, + message: "Please use ChromeUtils.import instead of Cu.import", + fix(fixer) { + return fixer.replaceText(callee, "ChromeUtils.import"); + }, + }); + } + + if ( + isMemberExpression(callee, "XPCOMUtils", "defineLazyModuleGetter") && + node.arguments.length < 4 + ) { + context.report({ + node, + message: + "Please use ChromeUtils.defineModuleGetter instead of " + + "XPCOMUtils.defineLazyModuleGetter", + fix(fixer) { + return fixer.replaceText( + callee, + "ChromeUtils.defineModuleGetter" + ); + }, + }); + } + }, + }; + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-default-preference-values.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-default-preference-values.js new file mode 100644 index 0000000000..7c2ffaf933 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-default-preference-values.js @@ -0,0 +1,45 @@ +/** + * @fileoverview Require providing a second parameter to get*Pref + * methods instead of using a try/catch block. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + TryStatement(node) { + let types = ["Bool", "Char", "Float", "Int"]; + let methods = types.map(type => "get" + type + "Pref"); + if (node.block.type != "BlockStatement" || node.block.body.length != 1) { + return; + } + + let firstStm = node.block.body[0]; + if ( + firstStm.type != "ExpressionStatement" || + firstStm.expression.type != "AssignmentExpression" || + firstStm.expression.right.type != "CallExpression" || + firstStm.expression.right.callee.type != "MemberExpression" || + firstStm.expression.right.callee.property.type != "Identifier" || + !methods.includes(firstStm.expression.right.callee.property.name) + ) { + return; + } + + let msg = "provide a default value instead of using a try/catch block"; + context.report(node, msg); + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-includes-instead-of-indexOf.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-includes-instead-of-indexOf.js new file mode 100644 index 0000000000..d4b3da5f1e --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-includes-instead-of-indexOf.js @@ -0,0 +1,45 @@ +/** + * @fileoverview Use .includes instead of .indexOf + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + BinaryExpression(node) { + if ( + node.left.type != "CallExpression" || + node.left.callee.type != "MemberExpression" || + node.left.callee.property.type != "Identifier" || + node.left.callee.property.name != "indexOf" + ) { + return; + } + + if ( + (["!=", "!==", "==", "==="].includes(node.operator) && + node.right.type == "UnaryExpression" && + node.right.operator == "-" && + node.right.argument.type == "Literal" && + node.right.argument.value == 1) || + ([">=", "<"].includes(node.operator) && + node.right.type == "Literal" && + node.right.value == 0) + ) { + context.report(node, "use .includes instead of .indexOf"); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-ownerGlobal.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-ownerGlobal.js new file mode 100644 index 0000000000..34b22a1269 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-ownerGlobal.js @@ -0,0 +1,38 @@ +/** + * @fileoverview Require .ownerGlobal instead of .ownerDocument.defaultView. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + MemberExpression(node) { + if ( + node.property.type != "Identifier" || + node.property.name != "defaultView" || + node.object.type != "MemberExpression" || + node.object.property.type != "Identifier" || + node.object.property.name != "ownerDocument" + ) { + return; + } + + context.report( + node, + "use .ownerGlobal instead of .ownerDocument.defaultView" + ); + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-returnValue.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-returnValue.js new file mode 100644 index 0000000000..eb693d0014 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-returnValue.js @@ -0,0 +1,42 @@ +/** + * @fileoverview Warn when idempotent methods are called and their return value is unused. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + ExpressionStatement(node) { + if ( + !node.expression || + node.expression.type != "CallExpression" || + !node.expression.callee || + node.expression.callee.type != "MemberExpression" || + !node.expression.callee.property || + node.expression.callee.property.type != "Identifier" || + (node.expression.callee.property.name != "concat" && + node.expression.callee.property.name != "join" && + node.expression.callee.property.name != "slice") + ) { + return; + } + + context.report( + node, + `{Array/String}.${node.expression.callee.property.name} doesn't modify the instance in-place` + ); + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-services.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-services.js new file mode 100644 index 0000000000..1235cd0f99 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/use-services.js @@ -0,0 +1,45 @@ +/** + * @fileoverview Require use of Services.* rather than getService. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; +const helpers = require("../helpers"); + +let servicesInterfaceMap = helpers.servicesData; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + return { + CallExpression(node) { + if ( + !node.callee || + !node.callee.property || + node.callee.property.type != "Identifier" || + node.callee.property.name != "getService" || + node.arguments.length != 1 || + !node.arguments[0].property || + node.arguments[0].property.type != "Identifier" || + !node.arguments[0].property.name || + !(node.arguments[0].property.name in servicesInterfaceMap) + ) { + return; + } + + let serviceName = servicesInterfaceMap[node.arguments[0].property.name]; + + context.report( + node, + `Use Services.${serviceName} rather than getService().` + ); + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/var-only-at-top-level.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/var-only-at-top-level.js new file mode 100644 index 0000000000..9365982b0c --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/var-only-at-top-level.js @@ -0,0 +1,34 @@ +/** + * @fileoverview Marks all var declarations that are not at the top level + * invalid. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ----------------------------------------------------------------------------- +// Rule Definition +// ----------------------------------------------------------------------------- + +var helpers = require("../helpers"); + +module.exports = function(context) { + // --------------------------------------------------------------------------- + // Public + // -------------------------------------------------------------------------- + + return { + VariableDeclaration(node) { + if (node.kind === "var") { + if (helpers.getIsGlobalScope(context.getAncestors())) { + return; + } + + context.report(node, "Unexpected var, use let or const instead."); + } + }, + }; +}; diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/services.json b/tools/lint/eslint/eslint-plugin-mozilla/lib/services.json new file mode 100644 index 0000000000..dd250ee15e --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/services.json @@ -0,0 +1,50 @@ +{ + "mozIJSSubScriptLoader": "scriptloader", + "mozILocaleService": "locale", + "mozIMozIntl": "intl", + "mozIStorageService": "storage", + "nsIAppShellService": "appShell", + "nsIAppStartup": "startup", + "nsICacheStorageService": "cache2", + "nsICategoryManager": "catMan", + "nsIClearDataService": "clearData", + "nsIClipboard": "clipboard", + "nsIConsoleService": "console", + "nsICookieManager": "cookies", + "nsIDOMRequestService": "DOMRequest", + "nsIDOMStorageManager": "domStorageManager", + "nsIDirectoryService": "dirsvc", + "nsIDroppedLinkHandler": "droppedLinkHandler", + "nsIEffectiveTLDService": "eTLD", + "nsIEnterprisePolicies": "policies", + "nsIEventListenerService": "els", + "nsIFocusManager": "focus", + "nsIIOService": "io", + "nsILoadContextInfoFactory": "loadContextInfo", + "nsILocalStorageManager": "domStorageManager", + "nsILoginManager": "logins", + "nsINetUtil": "io", + "nsIObserverService": "obs", + "nsIPermissionManager": "perms", + "nsIPrefBranch": "prefs", + "nsIPrefService": "prefs", + "nsIProfiler": "profiler", + "nsIPromptService": "prompt", + "nsIProperties": "dirsvc", + "nsIPropertyBag2": "sysinfo", + "nsIQuotaManagerService": "qms", + "nsIScriptSecurityManager": "scriptSecurityManager", + "nsISearchService": "search", + "nsISpeculativeConnect": "io", + "nsIStringBundleService": "strings", + "nsISystemInfo": "sysinfo", + "nsITelemetry": "telemetry", + "nsITextToSubURI": "textToSubURI", + "nsIThreadManager": "tm", + "nsIURLFormatter": "urlFormatter", + "nsIVersionComparator": "vc", + "nsIWindowMediator": "wm", + "nsIWindowWatcher": "ww", + "nsIXULAppInfo": "appinfo", + "nsIXULRuntime": "appinfo" +}
\ No newline at end of file diff --git a/tools/lint/eslint/eslint-plugin-mozilla/manifest.tt b/tools/lint/eslint/eslint-plugin-mozilla/manifest.tt new file mode 100644 index 0000000000..e58dfbb57c --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/manifest.tt @@ -0,0 +1,10 @@ +[ + { + "algorithm": "sha512", + "visibility": "public", + "filename": "eslint-plugin-mozilla.tar.gz", + "unpack": true, + "digest": "196e87a20b68bcafb4fb7893c829beb3d44144f6985a4194bc41b135618f373732ae8e0604ed0548ae5e79f1c0eede33a802fbf4f12678c59a3615c481923912", + "size": 5272799 + } +]
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"keywords": [ + "eslint", + "eslintplugin", + "eslint-plugin", + "mozilla", + "firefox" + ], + "bugs": { + "url": "https://bugzilla.mozilla.org/enter_bug.cgi?product=Testing&component=Lint" + }, + "homepage": "http://firefox-source-docs.mozilla.org/tools/lint/linters/eslint-plugin-mozilla.html", + "repository": { + "type": "hg", + "url": "https://hg.mozilla.org/mozilla-central/" + }, + "author": "Mike Ratcliffe", + "main": "lib/index.js", + "dependencies": { + "@babel/core": "7.8.3", + "babel-eslint": "10.1.0", + "eslint-scope": "5.1.0", + "eslint-visitor-keys": "1.3.0", + "estraverse": "4.3.0", + "htmlparser2": "3.10.1", + "multi-ini": "2.1.0", + "sax": "1.2.4" + }, + "devDependencies": { + "eslint": "7.8.0", + "mocha": "^8.1.3" + }, + "peerDependencies": { + "eslint-config-prettier": "^6.0.0", + "eslint-plugin-fetch-options": "^0.0.5", + "eslint-plugin-html": "^6.0.0", + "eslint-plugin-no-unsanitized": "^3.1.4", + "eslint-plugin-prettier": "^3.0.1", + "eslint": "^7.8.0", + "prettier": "^1.17.0" + }, + "engines": { + "node": ">=6.9.1" + }, + "scripts": { + "prepack": "node scripts/createExports.js", + "test": "mocha --reporter 'reporters/mozilla-format.js' tests", + "postpublish": "rm -f lib/modules.json lib/environments/saved-globals.json lib/rules/saved-rules-data.json", + "update-tooltool": "./update.sh" + }, + "license": "MPL-2.0" +} diff --git a/tools/lint/eslint/eslint-plugin-mozilla/reporters/mozilla-format.js b/tools/lint/eslint/eslint-plugin-mozilla/reporters/mozilla-format.js new file mode 100644 index 0000000000..885727e8aa --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/reporters/mozilla-format.js @@ -0,0 +1,50 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/** + * This file outputs the format that treeherder requires. If we integrate + * these tests with ./mach, then we may replace this with a json handler within + * mach itself. + */ + +"use strict"; + +var mocha = require("mocha"); +var path = require("path"); +module.exports = MozillaFormatter; + +function MozillaFormatter(runner) { + mocha.reporters.Base.call(this, runner); + var passes = 0; + var failures = 0; + + runner.on("start", () => { + console.log("SUITE-START | eslint-plugin-mozilla"); + }); + + runner.on("pass", function(test) { + passes++; + let title = test.title.replace(/\n/g, "|"); + console.log(`TEST-PASS | ${path.basename(test.file)} | ${title}`); + }); + + runner.on("fail", function(test, err) { + failures++; + // Replace any newlines in the title. + let title = test.title.replace(/\n/g, "|"); + console.log( + `TEST-UNEXPECTED-FAIL | ${path.basename(test.file)} | ${title} | ${ + err.message + }` + ); + }); + + runner.on("end", function() { + console.log("INFO | Result summary:"); + console.log(`INFO | Passed: ${passes}`); + console.log(`INFO | Failed: ${failures}`); + console.log("SUITE-END"); + process.exit(failures); + }); +} diff --git a/tools/lint/eslint/eslint-plugin-mozilla/scripts/createExports.js b/tools/lint/eslint/eslint-plugin-mozilla/scripts/createExports.js new file mode 100644 index 0000000000..60d61b0f72 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/scripts/createExports.js @@ -0,0 +1,89 @@ +/** + * @fileoverview A script to export the known globals to a file. + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ +"use strict"; + +var fs = require("fs"); +var path = require("path"); +var helpers = require("../lib/helpers"); + +const eslintDir = path.join(helpers.rootDir, "tools", "lint", "eslint"); + +const globalsFile = path.join( + eslintDir, + "eslint-plugin-mozilla", + "lib", + "environments", + "saved-globals.json" +); +const rulesFile = path.join( + eslintDir, + "eslint-plugin-mozilla", + "lib", + "rules", + "saved-rules-data.json" +); + +console.log("Copying modules.json"); + +const modulesFile = path.join(eslintDir, "modules.json"); +const shipModulesFile = path.join( + eslintDir, + "eslint-plugin-mozilla", + "lib", + "modules.json" +); + +fs.writeFileSync(shipModulesFile, fs.readFileSync(modulesFile)); + +console.log("Copying services.json"); + +const env = helpers.getBuildEnvironment(); + +const servicesFile = path.join( + env.topobjdir, + "xpcom", + "components", + "services.json" +); +const shipServicesFile = path.join( + eslintDir, + "eslint-plugin-mozilla", + "lib", + "services.json" +); + +fs.writeFileSync(shipServicesFile, fs.readFileSync(servicesFile)); + +console.log("Generating globals file"); + +// Export the environments. +let environmentGlobals = require("../lib/index.js").environments; + +return fs.writeFile( + globalsFile, + JSON.stringify({ environments: environmentGlobals }), + err => { + if (err) { + console.error(err); + process.exit(1); + } + + console.log("Globals file generation complete"); + + console.log("Creating rules data file"); + let rulesData = {}; + + return fs.writeFile(rulesFile, JSON.stringify({ rulesData }), err1 => { + if (err1) { + console.error(err1); + process.exit(1); + } + + console.log("Globals file generation complete"); + }); + } +); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/avoid-Date-timing.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/avoid-Date-timing.js new file mode 100644 index 0000000000..597961e8cc --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/avoid-Date-timing.js @@ -0,0 +1,42 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/avoid-Date-timing"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, type, message) { + return { code, errors: [{ message, type }] }; +} + +ruleTester.run("avoid-Date-timing", rule, { + valid: [ + "new Date('2017-07-11');", + "new Date(1499790192440);", + "new Date(2017, 7, 11);", + "Date.UTC(2017, 7);", + ], + invalid: [ + invalidCode( + "Date.now();", + "CallExpression", + "use performance.now() instead of Date.now() for timing measurements" + ), + invalidCode( + "new Date();", + "NewExpression", + "use performance.now() instead of new Date() for timing measurements" + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/avoid-removeChild.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/avoid-removeChild.js new file mode 100644 index 0000000000..e6a146898d --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/avoid-removeChild.js @@ -0,0 +1,46 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/avoid-removeChild"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, message) { + if (!message) { + message = + "use element.remove() instead of " + + "element.parentNode.removeChild(element)"; + } + return { code, errors: [{ message, type: "CallExpression" }] }; +} + +ruleTester.run("avoid-removeChild", rule, { + valid: [ + "elt.remove();", + "elt.parentNode.parentNode.removeChild(elt2.parentNode);", + "elt.parentNode.removeChild(elt2);", + "elt.removeChild(elt2);", + ], + invalid: [ + invalidCode("elt.parentNode.removeChild(elt);"), + invalidCode("elt.parentNode.parentNode.removeChild(elt.parentNode);"), + invalidCode("$(e).parentNode.removeChild($(e));"), + invalidCode("$('e').parentNode.removeChild($('e'));"), + invalidCode( + "elt.removeChild(elt.firstChild);", + "use element.firstChild.remove() instead of " + + "element.removeChild(element.firstChild)" + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/balanced-listeners.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/balanced-listeners.js new file mode 100644 index 0000000000..ca84e3474f --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/balanced-listeners.js @@ -0,0 +1,89 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/balanced-listeners"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function error(code, message) { + return { + code, + errors: [{ message, type: "Identifier" }], + }; +} + +ruleTester.run("balanced-listeners", rule, { + valid: [ + "elt.addEventListener('event', handler);" + + "elt.removeEventListener('event', handler);", + + "elt.addEventListener('event', handler, true);" + + "elt.removeEventListener('event', handler, true);", + + "elt.addEventListener('event', handler, false);" + + "elt.removeEventListener('event', handler, false);", + + "elt.addEventListener('event', handler);" + + "elt.removeEventListener('event', handler, false);", + + "elt.addEventListener('event', handler, false);" + + "elt.removeEventListener('event', handler);", + + "elt.addEventListener('event', handler, {capture: false});" + + "elt.removeEventListener('event', handler);", + + "elt.addEventListener('event', handler);" + + "elt.removeEventListener('event', handler, {capture: false});", + + "elt.addEventListener('event', handler, {capture: true});" + + "elt.removeEventListener('event', handler, true);", + + "elt.addEventListener('event', handler, true);" + + "elt.removeEventListener('event', handler, {capture: true});", + + "elt.addEventListener('event', handler, {once: true});", + + "elt.addEventListener('event', handler, {once: true, capture: true});", + ], + invalid: [ + error( + "elt.addEventListener('click', handler, false);", + "No corresponding 'removeEventListener(click)' was found." + ), + + error( + "elt.addEventListener('click', handler, false);" + + "elt.removeEventListener('click', handler, true);", + "No corresponding 'removeEventListener(click)' was found." + ), + + error( + "elt.addEventListener('click', handler, {capture: false});" + + "elt.removeEventListener('click', handler, true);", + "No corresponding 'removeEventListener(click)' was found." + ), + + error( + "elt.addEventListener('click', handler, {capture: true});" + + "elt.removeEventListener('click', handler);", + "No corresponding 'removeEventListener(click)' was found." + ), + + error( + "elt.addEventListener('click', handler, true);" + + "elt.removeEventListener('click', handler);", + "No corresponding 'removeEventListener(click)' was found." + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/balanced-observers.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/balanced-observers.js new file mode 100644 index 0000000000..e5f31fa969 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/balanced-observers.js @@ -0,0 +1,74 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/balanced-observers"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function error(code, message) { + return { + code, + errors: [{ message, type: "Identifier" }], + }; +} + +ruleTester.run("balanced-observers", rule, { + valid: [ + "Services.obs.addObserver(observer, 'observable');" + + "Services.obs.removeObserver(observer, 'observable');", + "Services.prefs.addObserver('preference.name', otherObserver);" + + "Services.prefs.removeObserver('preference.name', otherObserver);", + ], + invalid: [ + error( + // missing Services.obs.removeObserver + "Services.obs.addObserver(observer, 'observable');", + "No corresponding 'removeObserver(\"observable\")' was found." + ), + + error( + // wrong observable name for Services.obs.removeObserver + "Services.obs.addObserver(observer, 'observable');" + + "Services.obs.removeObserver(observer, 'different-observable');", + "No corresponding 'removeObserver(\"observable\")' was found." + ), + + error( + // missing Services.prefs.removeObserver + "Services.prefs.addObserver('preference.name', otherObserver);", + "No corresponding 'removeObserver(\"preference.name\")' was found." + ), + + error( + // wrong observable name for Services.prefs.removeObserver + "Services.prefs.addObserver('preference.name', otherObserver);" + + "Services.prefs.removeObserver('other.preference', otherObserver);", + "No corresponding 'removeObserver(\"preference.name\")' was found." + ), + + error( + // mismatch Services.prefs vs Services.obs + "Services.obs.addObserver(observer, 'observable');" + + "Services.prefs.removeObserver(observer, 'observable');", + "No corresponding 'removeObserver(\"observable\")' was found." + ), + + error( + "Services.prefs.addObserver('preference.name', otherObserver);" + + // mismatch Services.prefs vs Services.obs + "Services.obs.removeObserver('preference.name', otherObserver);", + "No corresponding 'removeObserver(\"preference.name\")' was found." + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/consistent-if-bracing.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/consistent-if-bracing.js new file mode 100644 index 0000000000..b6b5b849b9 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/consistent-if-bracing.js @@ -0,0 +1,40 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/consistent-if-bracing"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code) { + return { code, errors: [{ messageId: "consistentIfBracing" }] }; +} + +ruleTester.run("consistent-if-bracing", rule, { + valid: [ + "if (true) {1} else {0}", + "if (false) 1; else 0", + "if (true) {1} else if (true) {2} else {0}", + "if (true) {1} else if (true) {2} else if (true) {3} else {0}", + ], + invalid: [ + invalidCode(`if (true) {1} else 0`), + invalidCode("if (true) 1; else {0}"), + invalidCode("if (true) {1} else if (true) 2; else {0}"), + invalidCode("if (true) 1; else if (true) {2} else {0}"), + invalidCode("if (true) {1} else if (true) 2; else {0}"), + invalidCode("if (true) {1} else if (true) {2} else 0"), + invalidCode("if (true) {1} else if (true) {2} else if (true) 3; else {0}"), + invalidCode("if (true) {if (true) 1; else {0}} else {0}"), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/mark-exported-symbols-as-used.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/mark-exported-symbols-as-used.js new file mode 100644 index 0000000000..d004650997 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/mark-exported-symbols-as-used.js @@ -0,0 +1,45 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/mark-exported-symbols-as-used"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, type, message) { + return { code, errors: [{ message, type }] }; +} + +ruleTester.run("mark-exported-symbols-as-used", rule, { + valid: [ + "var EXPORTED_SYMBOLS = ['foo'];", + "this.EXPORTED_SYMBOLS = ['foo'];", + ], + invalid: [ + invalidCode( + "let EXPORTED_SYMBOLS = ['foo'];", + "VariableDeclaration", + "EXPORTED_SYMBOLS cannot be declared via `let`. Use `var` or `this.EXPORTED_SYMBOLS =`" + ), + invalidCode( + "var EXPORTED_SYMBOLS = 'foo';", + "VariableDeclaration", + "Unexpected assignment of non-Array to EXPORTED_SYMBOLS" + ), + invalidCode( + "this.EXPORTED_SYMBOLS = 'foo';", + "AssignmentExpression", + "Unexpected assignment of non-Array to EXPORTED_SYMBOLS" + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/no-arbitrary-setTimeout.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-arbitrary-setTimeout.js new file mode 100644 index 0000000000..907b439b3c --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-arbitrary-setTimeout.js @@ -0,0 +1,41 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/no-arbitrary-setTimeout"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function wrapCode(code, filename = "xpcshell/test_foo.js") { + return { code, filename }; +} + +function invalidCode(code) { + let message = + "listen for events instead of setTimeout() with arbitrary delay"; + let obj = wrapCode(code); + obj.errors = [{ message, type: "CallExpression" }]; + return obj; +} + +ruleTester.run("no-arbitrary-setTimeout", rule, { + valid: [ + wrapCode("setTimeout(function() {}, 0);"), + wrapCode("setTimeout(function() {});"), + wrapCode("setTimeout(function() {}, 10);", "test_foo.js"), + ], + invalid: [ + invalidCode("setTimeout(function() {}, 10);"), + invalidCode("setTimeout(function() {}, timeout);"), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/no-compare-against-boolean-literals.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-compare-against-boolean-literals.js new file mode 100644 index 0000000000..722e6b5dda --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-compare-against-boolean-literals.js @@ -0,0 +1,61 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/no-compare-against-boolean-literals"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function callError(message) { + return [{ message, type: "BinaryExpression" }]; +} + +const MESSAGE = "Don't compare for inexact equality against boolean literals"; + +ruleTester.run("no-compare-against-boolean-literals", rule, { + valid: [`if (!foo) {}`, `if (!!foo) {}`], + invalid: [ + { + code: `if (foo == true) {}`, + errors: callError(MESSAGE), + }, + { + code: `if (foo != true) {}`, + errors: callError(MESSAGE), + }, + { + code: `if (foo == false) {}`, + errors: callError(MESSAGE), + }, + { + code: `if (foo != false) {}`, + errors: callError(MESSAGE), + }, + { + code: `if (true == foo) {}`, + errors: callError(MESSAGE), + }, + { + code: `if (true != foo) {}`, + errors: callError(MESSAGE), + }, + { + code: `if (false == foo) {}`, + errors: callError(MESSAGE), + }, + { + code: `if (false != foo) {}`, + errors: callError(MESSAGE), + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/no-define-cc-etc.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-define-cc-etc.js new file mode 100644 index 0000000000..735c7f4654 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-define-cc-etc.js @@ -0,0 +1,62 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/no-define-cc-etc"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 9 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, varNames) { + if (!Array.isArray(varNames)) { + varNames = [varNames]; + } + return { + code, + errors: varNames.map(name => { + return { + message: `${name} is now defined in global scope, a separate definition is no longer necessary.`, + type: "VariableDeclarator", + }; + }), + }; +} + +ruleTester.run("no-define-cc-etc", rule, { + valid: [ + "var Cm = Components.manager;", + "const CC = Components.Constructor;", + "var {Constructor: CC, manager: Cm} = Components;", + "const {Constructor: CC, manager: Cm} = Components;", + "foo.Cc.test();", + "const {bar, ...foo} = obj;", + ], + invalid: [ + invalidCode("var Cc;", "Cc"), + invalidCode("let Cc;", "Cc"), + invalidCode("let Ci;", "Ci"), + invalidCode("let Cr;", "Cr"), + invalidCode("let Cu;", "Cu"), + invalidCode("var Cc = Components.classes;", "Cc"), + invalidCode("const {classes: Cc} = Components;", "Cc"), + invalidCode("let {classes: Cc, manager: Cm} = Components", "Cc"), + invalidCode("const Cu = Components.utils;", "Cu"), + invalidCode("var Ci = Components.interfaces, Cc = Components.classes;", [ + "Ci", + "Cc", + ]), + invalidCode("var {'interfaces': Ci, 'classes': Cc} = Components;", [ + "Ci", + "Cc", + ]), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/no-throw-cr-literal.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-throw-cr-literal.js new file mode 100644 index 0000000000..6750213e72 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-throw-cr-literal.js @@ -0,0 +1,62 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/no-throw-cr-literal"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, output, messageId) { + return { + code, + output, + errors: [{ messageId, type: "ThrowStatement" }], + }; +} + +ruleTester.run("no-throw-cr-literal", rule, { + valid: [ + 'throw Components.Exception("", Cr.NS_ERROR_NOT_IMPLEMENTED);', + 'throw Components.Exception("", Components.results.NS_ERROR_UNEXPECTED);', + 'function t() { throw Components.Exception("", Cr.NS_ERROR_NO_CONTENT); }', + // We don't handle combined values, regular no-throw-literal catches them + 'throw Components.results.NS_ERROR_UNEXPECTED + "whoops";', + ], + invalid: [ + invalidCode( + "throw Cr.NS_ERROR_NO_INTERFACE;", + 'throw Components.Exception("", Cr.NS_ERROR_NO_INTERFACE);', + "bareCR" + ), + invalidCode( + "throw Components.results.NS_ERROR_ABORT;", + 'throw Components.Exception("", Components.results.NS_ERROR_ABORT);', + "bareComponentsResults" + ), + invalidCode( + "function t() { throw Cr.NS_ERROR_NULL_POINTER; }", + 'function t() { throw Components.Exception("", Cr.NS_ERROR_NULL_POINTER); }', + "bareCR" + ), + invalidCode( + "throw new Error(Cr.NS_ERROR_ABORT);", + 'throw Components.Exception("", Cr.NS_ERROR_ABORT);', + "newErrorCR" + ), + invalidCode( + "throw new Error(Components.results.NS_ERROR_ABORT);", + 'throw Components.Exception("", Components.results.NS_ERROR_ABORT);', + "newErrorComponentsResults" + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-parameters.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-parameters.js new file mode 100644 index 0000000000..0c9b12f6eb --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-parameters.js @@ -0,0 +1,147 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/no-useless-parameters"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function callError(message) { + return [{ message, type: "CallExpression" }]; +} + +ruleTester.run("no-useless-parameters", rule, { + valid: [ + "Services.prefs.clearUserPref('browser.search.custom');", + "Services.removeObserver('notification name', {});", + "Services.io.newURI('http://example.com');", + "Services.io.newURI('http://example.com', 'utf8');", + "elt.addEventListener('click', handler);", + "elt.addEventListener('click', handler, true);", + "elt.addEventListener('click', handler, {once: true});", + "elt.removeEventListener('click', handler);", + "elt.removeEventListener('click', handler, true);", + "Services.obs.addObserver(this, 'topic', true);", + "Services.obs.addObserver(this, 'topic');", + "Services.prefs.addObserver('branch', this, true);", + "Services.prefs.addObserver('branch', this);", + "array.appendElement(elt);", + "Services.obs.notifyObservers(obj, 'topic', 'data');", + "Services.obs.notifyObservers(obj, 'topic');", + "window.getComputedStyle(elt);", + "window.getComputedStyle(elt, ':before');", + ], + invalid: [ + { + code: "Services.prefs.clearUserPref('browser.search.custom', false);", + output: "Services.prefs.clearUserPref('browser.search.custom');", + errors: callError("clearUserPref takes only 1 parameter."), + }, + { + code: "Services.prefs.clearUserPref('browser.search.custom',\n false);", + output: "Services.prefs.clearUserPref('browser.search.custom');", + errors: callError("clearUserPref takes only 1 parameter."), + }, + { + code: "Services.removeObserver('notification name', {}, false);", + output: "Services.removeObserver('notification name', {});", + errors: callError("removeObserver only takes 2 parameters."), + }, + { + code: "Services.removeObserver('notification name', {}, true);", + output: "Services.removeObserver('notification name', {});", + errors: callError("removeObserver only takes 2 parameters."), + }, + { + code: "Services.io.newURI('http://example.com', null, null);", + output: "Services.io.newURI('http://example.com');", + errors: callError("newURI's last parameters are optional."), + }, + { + code: "Services.io.newURI('http://example.com', 'utf8', null);", + output: "Services.io.newURI('http://example.com', 'utf8');", + errors: callError("newURI's last parameters are optional."), + }, + { + code: "Services.io.newURI('http://example.com', null);", + output: "Services.io.newURI('http://example.com');", + errors: callError("newURI's last parameters are optional."), + }, + { + code: "Services.io.newURI('http://example.com', '', '');", + output: "Services.io.newURI('http://example.com');", + errors: callError("newURI's last parameters are optional."), + }, + { + code: "Services.io.newURI('http://example.com', '');", + output: "Services.io.newURI('http://example.com');", + errors: callError("newURI's last parameters are optional."), + }, + { + code: "elt.addEventListener('click', handler, false);", + output: "elt.addEventListener('click', handler);", + errors: callError( + "addEventListener's third parameter can be omitted when it's false." + ), + }, + { + code: "elt.removeEventListener('click', handler, false);", + output: "elt.removeEventListener('click', handler);", + errors: callError( + "removeEventListener's third parameter can be omitted when it's" + + " false." + ), + }, + { + code: "Services.obs.addObserver(this, 'topic', false);", + output: "Services.obs.addObserver(this, 'topic');", + errors: callError( + "addObserver's third parameter can be omitted when it's false." + ), + }, + { + code: "Services.prefs.addObserver('branch', this, false);", + output: "Services.prefs.addObserver('branch', this);", + errors: callError( + "addObserver's third parameter can be omitted when it's false." + ), + }, + { + code: "array.appendElement(elt, false);", + output: "array.appendElement(elt);", + errors: callError( + "appendElement's second parameter can be omitted when it's false." + ), + }, + { + code: "Services.obs.notifyObservers(obj, 'topic', null);", + output: "Services.obs.notifyObservers(obj, 'topic');", + errors: callError("notifyObservers's third parameter can be omitted."), + }, + { + code: "Services.obs.notifyObservers(obj, 'topic', '');", + output: "Services.obs.notifyObservers(obj, 'topic');", + errors: callError("notifyObservers's third parameter can be omitted."), + }, + { + code: "window.getComputedStyle(elt, null);", + output: "window.getComputedStyle(elt);", + errors: callError("getComputedStyle's second parameter can be omitted."), + }, + { + code: "window.getComputedStyle(elt, '');", + output: "window.getComputedStyle(elt);", + errors: callError("getComputedStyle's second parameter can be omitted."), + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-removeEventListener.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-removeEventListener.js new file mode 100644 index 0000000000..9f59c78d05 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-removeEventListener.js @@ -0,0 +1,99 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/no-useless-removeEventListener"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code) { + let message = + "use {once: true} instead of removeEventListener " + + "as the first instruction of the listener"; + return { code, errors: [{ message, type: "CallExpression" }] }; +} + +ruleTester.run("no-useless-removeEventListener", rule, { + valid: [ + // Listeners that aren't a function are always valid. + "elt.addEventListener('click', handler);", + "elt.addEventListener('click', handler, true);", + "elt.addEventListener('click', handler, {once: true});", + + // Should not fail on empty functions. + "elt.addEventListener('click', function() {});", + + // Should not reject when removing a listener for another event. + "elt.addEventListener('click', function listener() {" + + " elt.removeEventListener('keypress', listener);" + + "});", + + // Should not reject when there's another instruction before + // removeEventListener. + "elt.addEventListener('click', function listener() {" + + " elt.focus();" + + " elt.removeEventListener('click', listener);" + + "});", + + // Should not reject when wantsUntrusted is true. + "elt.addEventListener('click', function listener() {" + + " elt.removeEventListener('click', listener);" + + "}, false, true);", + + // Should not reject when there's a literal and a variable + "elt.addEventListener('click', function listener() {" + + " elt.removeEventListener(eventName, listener);" + + "});", + + // Should not reject when there's 2 different variables + "elt.addEventListener(event1, function listener() {" + + " elt.removeEventListener(event2, listener);" + + "});", + + // Should not fail if this is a different type of event listener function. + "myfunc.addEventListener(listener);", + ], + invalid: [ + invalidCode( + "elt.addEventListener('click', function listener() {" + + " elt.removeEventListener('click', listener);" + + "});" + ), + invalidCode( + "elt.addEventListener('click', function listener() {" + + " elt.removeEventListener('click', listener, true);" + + "}, true);" + ), + invalidCode( + "elt.addEventListener('click', function listener() {" + + " elt.removeEventListener('click', listener);" + + "}, {once: true});" + ), + invalidCode( + "elt.addEventListener('click', function listener() {" + + " /* Comment */" + + " elt.removeEventListener('click', listener);" + + "});" + ), + invalidCode( + "elt.addEventListener('click', function() {" + + " elt.removeEventListener('click', arguments.callee);" + + "});" + ), + invalidCode( + "elt.addEventListener(eventName, function listener() {" + + " elt.removeEventListener(eventName, listener);" + + "});" + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-run-test.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-run-test.js new file mode 100644 index 0000000000..3541467143 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-useless-run-test.js @@ -0,0 +1,124 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/no-useless-run-test"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, output) { + let message = + "Useless run_test function - only contains run_next_test; whole function can be removed"; + return { code, output, errors: [{ message, type: "FunctionDeclaration" }] }; +} + +ruleTester.run("no-useless-run-test", rule, { + valid: [ + "function run_test() {}", + "function run_test() {let args = 1; run_next_test();}", + "function run_test() {fakeCall(); run_next_test();}", + ], + invalid: [ + // Single-line case. + invalidCode("function run_test() { run_next_test(); }", ""), + // Multiple-line cases + invalidCode( + ` +function run_test() { + run_next_test(); +}`, + `` + ), + invalidCode( + ` +foo(); +function run_test() { + run_next_test(); +} +`, + ` +foo(); +` + ), + invalidCode( + ` +foo(); +function run_test() { + run_next_test(); +} +bar(); +`, + ` +foo(); +bar(); +` + ), + invalidCode( + ` +foo(); + +function run_test() { + run_next_test(); +} + +bar();`, + ` +foo(); + +bar();` + ), + invalidCode( + ` +foo(); + +function run_test() { + run_next_test(); +} + +// A comment +bar(); +`, + ` +foo(); + +// A comment +bar(); +` + ), + invalidCode( + ` +foo(); + +/** + * A useful comment. + */ +function run_test() { + run_next_test(); +} + +// A comment +bar(); +`, + ` +foo(); + +/** + * A useful comment. + */ + +// A comment +bar(); +` + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js new file mode 100644 index 0000000000..daf3c6f3d9 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js @@ -0,0 +1,97 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/prefer-boolean-length-check"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidError() { + let message = "Prefer boolean length check"; + return [{ message, type: "BinaryExpression" }]; +} + +ruleTester.run("check-length", rule, { + valid: [ + "if (foo.length && foo.length) {}", + "if (!foo.length) {}", + "if (foo.value == 0) {}", + "if (foo.value > 0) {}", + "if (0 == foo.value) {}", + "if (0 < foo.value) {}", + "var a = !!foo.length", + "function bar() { return !!foo.length }", + ], + invalid: [ + { + code: "if (foo.length == 0) {}", + output: "if (!foo.length) {}", + errors: invalidError(), + }, + { + code: "if (foo.length > 0) {}", + output: "if (foo.length) {}", + errors: invalidError(), + }, + { + code: "if (0 < foo.length) {}", + output: "if (foo.length) {}", + errors: invalidError(), + }, + { + code: "if (0 == foo.length) {}", + output: "if (!foo.length) {}", + errors: invalidError(), + }, + { + code: "if (foo && foo.length == 0) {}", + output: "if (foo && !foo.length) {}", + errors: invalidError(), + }, + { + code: "if (foo.bar.length == 0) {}", + output: "if (!foo.bar.length) {}", + errors: invalidError(), + }, + { + code: "var a = foo.length>0", + output: "var a = !!foo.length", + errors: invalidError(), + }, + { + code: "function bar() { return foo.length>0 }", + output: "function bar() { return !!foo.length }", + errors: invalidError(), + }, + { + code: "if (foo && bar.length>0) {}", + output: "if (foo && bar.length) {}", + errors: invalidError(), + }, + { + code: "while (foo && bar.length>0) {}", + output: "while (foo && bar.length) {}", + errors: invalidError(), + }, + { + code: "x = y && bar.length > 0", + output: "x = y && !!bar.length", + errors: invalidError(), + }, + { + code: "function bar() { return x && foo.length > 0}", + output: "function bar() { return x && !!foo.length}", + errors: invalidError(), + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-formatValues.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-formatValues.js new file mode 100644 index 0000000000..0883130f17 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-formatValues.js @@ -0,0 +1,72 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/prefer-formatValues"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function error(line, column = undefined) { + return { + message: + "prefer to use a single document.l10n.formatValues call instead " + + "of multiple calls to document.l10n.formatValue or document.l10n.formatValues", + type: "CallExpression", + line, + column, + }; +} + +ruleTester.run("check-length", rule, { + valid: [ + "document.l10n.formatValue('foobar');", + "document.l10n.formatValues(['foobar', 'foobaz']);", + `if (foo) { + document.l10n.formatValue('foobar'); + } else { + document.l10n.formatValue('foobaz'); + }`, + `document.l10n.formatValue('foobaz'); + if (foo) { + document.l10n.formatValue('foobar'); + }`, + `if (foo) { + document.l10n.formatValue('foobar'); + } + document.l10n.formatValue('foobaz');`, + `if (foo) { + document.l10n.formatValue('foobar'); + } + document.l10n.formatValues(['foobaz']);`, + ], + invalid: [ + { + code: `document.l10n.formatValue('foobar'); + document.l10n.formatValue('foobaz');`, + errors: [error(1, 1), error(2, 14)], + }, + { + code: `document.l10n.formatValue('foobar'); + if (foo) { + document.l10n.formatValue('foobiz'); + } + document.l10n.formatValue('foobaz');`, + errors: [error(1, 1), error(5, 14)], + }, + { + code: `document.l10n.formatValues('foobar'); + document.l10n.formatValue('foobaz');`, + errors: [error(1, 1), error(2, 14)], + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-chromeutils-import-null.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-chromeutils-import-null.js new file mode 100644 index 0000000000..6584f728ac --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-chromeutils-import-null.js @@ -0,0 +1,42 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/reject-chromeutils-import-null"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidError() { + let message = + "ChromeUtils.import should not be called with (..., null) to " + + "retrieve the JSM global object. Rely on explicit exports instead."; + return [{ message, type: "CallExpression" }]; +} + +ruleTester.run("reject-chromeutils-import-null", rule, { + valid: ['ChromeUtils.import("resource://some/path/to/My.jsm")'], + invalid: [ + { + code: 'ChromeUtils.import("resource://some/path/to/My.jsm", null)', + errors: invalidError(), + }, + { + code: ` +ChromeUtils.import( + "resource://some/path/to/My.jsm", + null +);`, + errors: invalidError(), + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-importGlobalProperties.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-importGlobalProperties.js new file mode 100644 index 0000000000..04c0e0408b --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-importGlobalProperties.js @@ -0,0 +1,46 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/reject-importGlobalProperties"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +ruleTester.run("reject-importGlobalProperties", rule, { + valid: [ + { + code: "Cu.something();", + }, + { + options: ["allownonwebidl"], + code: "Cu.importGlobalProperties(['fetch'])", + }, + ], + invalid: [ + { + code: "Cu.importGlobalProperties(['fetch'])", + options: ["everything"], + errors: [{ messageId: "unexpectedCall" }], + }, + { + code: "Cu.importGlobalProperties(['TextEncoder'])", + options: ["everything"], + errors: [{ messageId: "unexpectedCall" }], + }, + { + code: "Cu.importGlobalProperties(['TextEncoder'])", + options: ["allownonwebidl"], + errors: [{ messageId: "unexpectedCallWebIdl" }], + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-relative-requires.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-relative-requires.js new file mode 100644 index 0000000000..19f30559ec --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-relative-requires.js @@ -0,0 +1,58 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/reject-relative-requires"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidError() { + let message = "relative paths are not allowed with require()"; + return [{ message, type: "CallExpression" }]; +} + +ruleTester.run("reject-relative-requires", rule, { + valid: [ + 'require("devtools/absolute/path")', + 'require("resource://gre/modules/SomeModule.jsm")', + 'loader.lazyRequireGetter(this, "path", "devtools/absolute/path", true)', + 'loader.lazyRequireGetter(this, "Path", "devtools/absolute/path")', + ], + invalid: [ + { + code: 'require("./relative/path")', + errors: invalidError(), + }, + { + code: 'require("../parent/folder/path")', + errors: invalidError(), + }, + { + code: 'loader.lazyRequireGetter(this, "path", "./relative/path", true)', + errors: invalidError(), + }, + { + code: + 'loader.lazyRequireGetter(this, "path", "../parent/folder/path", true)', + errors: invalidError(), + }, + { + code: 'loader.lazyRequireGetter(this, "path", "./relative/path")', + errors: invalidError(), + }, + { + code: 'loader.lazyRequireGetter(this, "path", "../parent/folder/path")', + errors: invalidError(), + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-some-requires.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-some-requires.js new file mode 100644 index 0000000000..b56dd2cf96 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-some-requires.js @@ -0,0 +1,49 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/reject-some-requires"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function requirePathError(path) { + const message = `require(${path}) is not allowed`; + return [{ message, type: "CallExpression" }]; +} + +const DEVTOOLS_FORBIDDEN_PATH = "^(resource://)?devtools/forbidden"; + +ruleTester.run("reject-some-requires", rule, { + valid: [ + { + code: 'require("devtools/not-forbidden/path")', + options: [DEVTOOLS_FORBIDDEN_PATH], + }, + { + code: 'require("resource://devtools/not-forbidden/path")', + options: [DEVTOOLS_FORBIDDEN_PATH], + }, + ], + invalid: [ + { + code: 'require("devtools/forbidden/path")', + errors: requirePathError("devtools/forbidden/path"), + options: [DEVTOOLS_FORBIDDEN_PATH], + }, + { + code: 'require("resource://devtools/forbidden/path")', + errors: requirePathError("resource://devtools/forbidden/path"), + options: [DEVTOOLS_FORBIDDEN_PATH], + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/rejects-requires-await.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/rejects-requires-await.js new file mode 100644 index 0000000000..ea6273a8ee --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/rejects-requires-await.js @@ -0,0 +1,32 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/rejects-requires-await"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, messageId) { + return { code, errors: [{ messageId: "rejectRequiresAwait" }] }; +} + +ruleTester.run("reject-requires-await", rule, { + valid: [ + "async() => { await Assert.rejects(foo, /assertion/) }", + "async() => { await Assert.rejects(foo, /assertion/, 'msg') }", + ], + invalid: [ + invalidCode("Assert.rejects(foo)"), + invalidCode("Assert.rejects(foo, 'msg')"), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/use-cc-etc.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-cc-etc.js new file mode 100644 index 0000000000..7ad729d22b --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-cc-etc.js @@ -0,0 +1,55 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/use-cc-etc"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, originalName, newName) { + return { + code, + errors: [ + { + message: `Use ${newName} rather than ${originalName}`, + type: "MemberExpression", + }, + ], + }; +} + +ruleTester.run("use-cc-etc", rule, { + valid: ["Components.Constructor();", "let x = Components.foo;"], + invalid: [ + invalidCode( + "let foo = Components.classes['bar'];", + "Components.classes", + "Cc" + ), + invalidCode( + "let bar = Components.interfaces.bar;", + "Components.interfaces", + "Ci" + ), + invalidCode( + "Components.results.NS_ERROR_ILLEGAL_INPUT;", + "Components.results", + "Cr" + ), + invalidCode( + "Components.utils.reportError('fake');", + "Components.utils", + "Cu" + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/use-chromeutils-generateqi.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-chromeutils-generateqi.js new file mode 100644 index 0000000000..26c6b350bc --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-chromeutils-generateqi.js @@ -0,0 +1,81 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/use-chromeutils-generateqi"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function callError(message) { + return [{ message, type: "CallExpression" }]; +} +function error(message, type) { + return [{ message, type }]; +} + +const MSG_NO_JS_QUERY_INTERFACE = + "Please use ChromeUtils.generateQI rather than manually creating " + + "JavaScript QueryInterface functions"; + +const MSG_NO_XPCOMUTILS_GENERATEQI = + "Please use ChromeUtils.generateQI instead of XPCOMUtils.generateQI"; + +/* globals nsIFlug */ +function QueryInterface(iid) { + if ( + iid.equals(Ci.nsISupports) || + iid.equals(Ci.nsIMeh) || + iid.equals(nsIFlug) || + iid.equals(Ci.amIFoo) + ) { + return this; + } + throw Components.Exception("", Cr.NS_ERROR_NO_INTERFACE); +} + +ruleTester.run("use-chromeutils-generateqi", rule, { + valid: [ + `X.prototype.QueryInterface = ChromeUtils.generateQI(["nsIMeh"]);`, + `X.prototype = { QueryInterface: ChromeUtils.generateQI(["nsIMeh"]) }`, + ], + invalid: [ + { + code: `X.prototype.QueryInterface = XPCOMUtils.generateQI(["nsIMeh"]);`, + output: `X.prototype.QueryInterface = ChromeUtils.generateQI(["nsIMeh"]);`, + errors: callError(MSG_NO_XPCOMUTILS_GENERATEQI), + }, + { + code: `X.prototype = { QueryInterface: XPCOMUtils.generateQI(["nsIMeh"]) };`, + output: `X.prototype = { QueryInterface: ChromeUtils.generateQI(["nsIMeh"]) };`, + errors: callError(MSG_NO_XPCOMUTILS_GENERATEQI), + }, + { + code: `X.prototype = { QueryInterface: ${QueryInterface} };`, + output: `X.prototype = { QueryInterface: ChromeUtils.generateQI(["nsIMeh", "nsIFlug", "amIFoo"]) };`, + errors: error(MSG_NO_JS_QUERY_INTERFACE, "Property"), + }, + { + code: `X.prototype = { ${String(QueryInterface).replace( + /^function /, + "" + )} };`, + output: `X.prototype = { QueryInterface: ChromeUtils.generateQI(["nsIMeh", "nsIFlug", "amIFoo"]) };`, + errors: error(MSG_NO_JS_QUERY_INTERFACE, "Property"), + }, + { + code: `X.prototype.QueryInterface = ${QueryInterface};`, + output: `X.prototype.QueryInterface = ChromeUtils.generateQI(["nsIMeh", "nsIFlug", "amIFoo"]);`, + errors: error(MSG_NO_JS_QUERY_INTERFACE, "AssignmentExpression"), + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/use-chromeutils-import.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-chromeutils-import.js new file mode 100644 index 0000000000..635c436233 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-chromeutils-import.js @@ -0,0 +1,80 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/use-chromeutils-import"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function callError(message) { + return [{ message, type: "CallExpression" }]; +} + +const MESSAGE_IMPORT = "Please use ChromeUtils.import instead of Cu.import"; +const MESSAGE_DEFINE = + "Please use ChromeUtils.defineModuleGetter instead of " + + "XPCOMUtils.defineLazyModuleGetter"; + +ruleTester.run("use-chromeutils-import", rule, { + valid: [ + `ChromeUtils.import("resource://gre/modules/Service.jsm");`, + `ChromeUtils.import("resource://gre/modules/Service.jsm", this);`, + `ChromeUtils.defineModuleGetter(this, "Services", + "resource://gre/modules/Service.jsm");`, + `XPCOMUtils.defineLazyModuleGetter(this, "Services", + "resource://gre/modules/Service.jsm", + "Foo");`, + `XPCOMUtils.defineLazyModuleGetter(this, "Services", + "resource://gre/modules/Service.jsm", + undefined, preServicesLambda);`, + { + options: [{ allowCu: true }], + code: `Cu.import("resource://gre/modules/Service.jsm");`, + }, + ], + invalid: [ + { + code: `Cu.import("resource://gre/modules/Services.jsm");`, + output: `ChromeUtils.import("resource://gre/modules/Services.jsm");`, + errors: callError(MESSAGE_IMPORT), + }, + { + code: `Cu.import("resource://gre/modules/Services.jsm", this);`, + output: `ChromeUtils.import("resource://gre/modules/Services.jsm", this);`, + errors: callError(MESSAGE_IMPORT), + }, + { + code: `Components.utils.import("resource://gre/modules/Services.jsm");`, + output: `ChromeUtils.import("resource://gre/modules/Services.jsm");`, + errors: callError(MESSAGE_IMPORT), + }, + { + code: `Components.utils.import("resource://gre/modules/Services.jsm");`, + output: `ChromeUtils.import("resource://gre/modules/Services.jsm");`, + errors: callError(MESSAGE_IMPORT), + }, + { + options: [{ allowCu: true }], + code: `Components.utils.import("resource://gre/modules/Services.jsm", this);`, + output: `ChromeUtils.import("resource://gre/modules/Services.jsm", this);`, + errors: callError(MESSAGE_IMPORT), + }, + { + code: `XPCOMUtils.defineLazyModuleGetter(this, "Services", + "resource://gre/modules/Services.jsm");`, + output: `ChromeUtils.defineModuleGetter(this, "Services", + "resource://gre/modules/Services.jsm");`, + errors: callError(MESSAGE_DEFINE), + }, + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/use-default-preference-values.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-default-preference-values.js new file mode 100644 index 0000000000..f4ad001a08 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-default-preference-values.js @@ -0,0 +1,41 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/use-default-preference-values"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code) { + let message = "provide a default value instead of using a try/catch block"; + return { code, errors: [{ message, type: "TryStatement" }] }; +} + +let types = ["Bool", "Char", "Float", "Int"]; +let methods = types.map(type => "get" + type + "Pref"); + +ruleTester.run("use-default-preference-values", rule, { + valid: [].concat( + methods.map(m => "blah = branch." + m + "('blah', true);"), + methods.map(m => "blah = branch." + m + "('blah');"), + methods.map( + m => "try { canThrow(); blah = branch." + m + "('blah'); } catch(e) {}" + ) + ), + + invalid: [].concat( + methods.map(m => + invalidCode("try { blah = branch." + m + "('blah'); } catch(e) {}") + ) + ), +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/use-includes-instead-of-indexOf.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-includes-instead-of-indexOf.js new file mode 100644 index 0000000000..cb1810b305 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-includes-instead-of-indexOf.js @@ -0,0 +1,38 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/use-includes-instead-of-indexOf"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code) { + let message = "use .includes instead of .indexOf"; + return { code, errors: [{ message, type: "BinaryExpression" }] }; +} + +ruleTester.run("use-includes-instead-of-indexOf", rule, { + valid: [ + "let a = foo.includes(bar);", + "let a = foo.indexOf(bar) > 0;", + "let a = foo.indexOf(bar) != 0;", + ], + invalid: [ + invalidCode("let a = foo.indexOf(bar) >= 0;"), + invalidCode("let a = foo.indexOf(bar) != -1;"), + invalidCode("let a = foo.indexOf(bar) !== -1;"), + invalidCode("let a = foo.indexOf(bar) == -1;"), + invalidCode("let a = foo.indexOf(bar) === -1;"), + invalidCode("let a = foo.indexOf(bar) < 0;"), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/use-ownerGlobal.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-ownerGlobal.js new file mode 100644 index 0000000000..b08bdf1632 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-ownerGlobal.js @@ -0,0 +1,35 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/use-ownerGlobal"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code) { + let message = "use .ownerGlobal instead of .ownerDocument.defaultView"; + return { code, errors: [{ message, type: "MemberExpression" }] }; +} + +ruleTester.run("use-ownerGlobal", rule, { + valid: [ + "aEvent.target.ownerGlobal;", + "this.DOMPointNode.ownerGlobal.getSelection();", + "windowToMessageManager(node.ownerGlobal);", + ], + invalid: [ + invalidCode("aEvent.target.ownerDocument.defaultView;"), + invalidCode("this.DOMPointNode.ownerDocument.defaultView.getSelection();"), + invalidCode("windowToMessageManager(node.ownerDocument.defaultView);"), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/use-returnValue.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-returnValue.js new file mode 100644 index 0000000000..81952452e4 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-returnValue.js @@ -0,0 +1,39 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/use-returnValue"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, methodName) { + let message = `{Array/String}.${methodName} doesn't modify the instance in-place`; + return { code, errors: [{ message, type: "ExpressionStatement" }] }; +} + +ruleTester.run("use-returnValue", rule, { + valid: [ + "a = foo.concat(bar)", + "b = bar.concat([1,3,4])", + "c = baz.concat()", + "d = qux.join(' ')", + "e = quux.slice(1)", + ], + invalid: [ + invalidCode("foo.concat(bar)", "concat"), + invalidCode("bar.concat([1,3,4])", "concat"), + invalidCode("baz.concat()", "concat"), + invalidCode("qux.join(' ')", "join"), + invalidCode("quux.slice(1)", "slice"), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/use-services.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-services.js new file mode 100644 index 0000000000..b8d5338fc4 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/use-services.js @@ -0,0 +1,40 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Requirements +// ------------------------------------------------------------------------------ + +var rule = require("../lib/rules/use-services"); +var RuleTester = require("eslint").RuleTester; + +const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } }); + +// ------------------------------------------------------------------------------ +// Tests +// ------------------------------------------------------------------------------ + +function invalidCode(code, name) { + let message = `Use Services.${name} rather than getService().`; + return { code, errors: [{ message, type: "CallExpression" }] }; +} + +ruleTester.run("use-services", rule, { + valid: [ + 'Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator)', + 'Components.classes["@mozilla.org/uuid-generator;1"].getService(Components.interfaces.nsIUUIDGenerator)', + "Services.wm.addListener()", + ], + invalid: [ + invalidCode( + 'Cc["@mozilla.org/appshell/window-mediator;1"].getService(Ci.nsIWindowMediator);', + "wm" + ), + invalidCode( + 'Components.classes["@mozilla.org/toolkit/app-startup;1"].getService(Components.interfaces.nsIAppStartup);', + "startup" + ), + ], +}); diff --git a/tools/lint/eslint/eslint-plugin-mozilla/update.sh b/tools/lint/eslint/eslint-plugin-mozilla/update.sh new file mode 100755 index 0000000000..d8ee4098ec --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-mozilla/update.sh @@ -0,0 +1,61 @@ +#!/bin/sh +# Script to regenerate the npm packages used for eslint-plugin-mozilla by the builders. +# Requires + +# Force the scripts working directory to be projdir/tools/lint/eslint/eslint-plugin-mozilla. +DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" +cd $DIR + +echo "To complete this script you will need the following tokens from https://mozilla-releng.net/tokens" +echo " - tooltool.upload.public" +echo " - tooltool.download.public" +echo "" +read -p "Are these tokens visible at the above URL (y/n)?" choice +case "$choice" in + y|Y ) + echo "" + echo "1. Go to https://mozilla-releng.net" + echo "2. Log in using your Mozilla LDAP account." + echo "3. Click on \"Tokens.\"" + echo "4. Issue a user token with the permissions tooltool.upload.public and tooltool.download.public." + echo "" + echo "When you click issue you will be presented with a long string. Paste the string into a temporary file called ~/.tooltool-token." + echo "" + read -rsp $'Press any key to continue...\n' -n 1 + ;; + n|N ) + echo "" + echo "You will need to contact somebody that has these permissions... people most likely to have these permissions are members of the releng, ateam, a sheriff, mratcliffe, or jryans" + exit 1 + ;; + * ) + echo "" + echo "Invalid input." + continue + ;; +esac + +echo "" +echo "Removing node_modules and package-lock.json..." +# Move to the top-level directory. +rm -rf node_modules +rm package-lock.json + +echo "Installing modules for eslint-plugin-mozilla..." +npm install + +echo "Creating eslint-plugin-mozilla.tar.gz..." +tar cvz -f eslint-plugin-mozilla.tar.gz node_modules + +echo "Adding eslint-plugin-mozilla.tar.gz to tooltool..." +rm -f manifest.tt +../../../../python/mozbuild/mozbuild/action/tooltool.py add --visibility public --unpack eslint-plugin-mozilla.tar.gz --url="https://tooltool.mozilla-releng.net/" + +echo "Uploading eslint-plugin-mozilla.tar.gz to tooltool..." +../../../../python/mozbuild/mozbuild/action/tooltool.py upload --authentication-file=~/.tooltool-token --message "node_modules folder update for tools/lint/eslint/eslint-plugin-mozilla" --url="https://tooltool.mozilla-releng.net/" + +echo "Cleaning up..." +rm eslint-plugin-mozilla.tar.gz + +echo "" +echo "Update complete, please commit and check in your changes." |