Build: migrate most grunt tasks off of grunt

Updated tasks include:

- lint
- npmcopy
- build, minify, and process for distribution.
- new custom build command using yargs
- compare size of minified/gzip built files
- pretest scripts, including qunit-fixture, babel transpilation, and npmcopy
- node smoke tests
- promises aplus tests
- new watch task using `rollup.watch` directly

Also:

- upgraded husky and added the new lint command
- updated lint config to use new "flat" config format. See https://eslint.org/docs/latest/use/configure/configuration-files-new
- Temporarily disabled one lint rule until flat config is supported by eslint-plugin-import. See https://github.com/import-js/eslint-plugin-import/issues/2556
- committed package-lock.json
- updated all test scripts to use the new build
- added an express test server that uses middleware-mockserver (this can be used to run tests without karma)
- build-all-variants is now build:all

Close gh-5318

.editorconfig

@@ -10,7 +10,7 @@ charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[package.json]
+[*.{json,yml}]
 indent_style = space
 indent_size = 2
 

.eslintignore

@@ -1,22 +0,0 @@
-external
-node_modules
-*.min.js
-dist/**
-!dist/jquery.js
-!dist/jquery.min.js
-!dist/jquery.slim.js
-!dist/jquery.slim.min.js
-dist-module/**
-!dist-module/jquery.module.js
-!dist-module/jquery.module.min.js
-!dist-module/jquery.slim.module.js
-!dist-module/jquery.slim.module.min.js
-test/data/jquery-1.9.1.js
-test/data/badcall.js
-test/data/badjson.js
-test/data/json_obj.js
-test/data/readywaitasset.js
-test/data/readywaitloader.js
-test/data/support/csp.js
-test/data/support/getComputedSupport.js
-test/data/core/jquery-iterability-transpiled.js

.eslintrc-browser.json

@@ -1,27 +0,0 @@
-{
-	"root": true,
-
-	"extends": "jquery",
-
-	"reportUnusedDisableDirectives": true,
-
-	"parserOptions": {
-		"ecmaVersion": 5
-	},
-
-	// The browser env is not enabled on purpose so that code takes
-	// all browser-only globals from window instead of assuming
-	// they're available as globals. This makes it possible to use
-	// jQuery with tools like jsdom which provide a custom window
-	// implementation.
-	"env": {},
-
-	"globals": {
-		"window": true
-	},
-
-	"rules": {
-		"one-var": ["error", {"var": "always"}],
-		"strict": ["error", "function"]
-	}
-}

.eslintrc-node.json

@@ -1,20 +0,0 @@
-{
-	"root": true,
-
-	"extends": "jquery",
-
-	"reportUnusedDisableDirectives": true,
-
-	"parserOptions": {
-		"ecmaVersion": 2018
-	},
-
-	"env": {
-		"es6": true,
-		"node": true
-	},
-
-	"rules": {
-		"strict": ["error", "global"]
-	}
-}

.eslintrc.json

@@ -1,5 +0,0 @@
-{
-	"root": true,
-
-	"extends": "./.eslintrc-node.json"
-}

.github/workflows/node.js.yml

@@ -61,15 +61,25 @@ jobs:
       run: |
         export FIREFOX_SOURCE_URL='https://download.mozilla.org/?product=firefox-esr-latest&lang=en-US&os=linux64'
         wget --no-verbose $FIREFOX_SOURCE_URL -O - | tar -jx -C ${HOME}
-      if: "contains(matrix.NAME, 'Firefox ESR')"
+      if: contains(matrix.NAME, 'Firefox ESR')
 
     - name: Install dependencies
-      run: |
+      run: npm install
-        npm install
 
     - name: Install Playwright dependencies
       run: npx playwright-webkit install-deps
-      if: "matrix.NPM_SCRIPT == 'test:browser' && contains(matrix.BROWSERS, 'WebkitHeadless')"
+      if: matrix.NPM_SCRIPT == 'test:browser' && contains(matrix.BROWSERS, 'WebkitHeadless')
+
+    - name: Build jQuery for Lint
+      run: npm run build:all
+      if: matrix.NPM_SCRIPT == 'test:browserless'
+
+    - name: Lint code
+      run: npm run lint
+      if: matrix.NODE_VERSION == '18.x'
+
+    - name: Prepare tests
+      run: npm run pretest
 
     - name: Run tests
       env:

.gitignore

@@ -8,19 +8,18 @@
 .bower.json
 .sizecache.json
 yarn.lock
-package-lock.json
+.eslintcache
 
 npm-debug.log*
 
-# Ignore everything in `dist` folder except for the ESLint config
+# Ignore everything in `dist` folder except for
+# the ESLint config & package.json files
 /dist/*
-!/dist/.eslintrc.json
 !/dist/package.json
 
 # Ignore everything in the `dist-module` folder except for the ESLint config,
 # package.json & Node module wrapper files
 /dist-module/*
-!/dist-module/.eslintrc.json
 !/dist-module/package.json
 !/dist-module/jquery.node-module-wrapper.js
 !/dist-module/jquery.node-module-wrapper.slim.js

.husky/commit-msg

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+npx commitplease .git/COMMIT_EDITMSG

.husky/pre-commit

@@ -0,0 +1,5 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+npm run lint
+npm run qunit-fixture

.npmignore

@@ -1,5 +1,5 @@
 .eslintignore
-.eslintrc.json
+eslint.config.js
 
 /.editorconfig
 /.gitattributes

Gruntfile.cjs

@@ -1,20 +1,6 @@
 "use strict";
 
 module.exports = function( grunt ) {
-	function readOptionalJSON( filepath ) {
-		const stripJSONComments = require( "strip-json-comments" );
-		let data = {};
-		try {
-			data = JSON.parse( stripJSONComments(
-				fs.readFileSync( filepath, { encoding: "utf8" } )
-			) );
-		} catch ( e ) {}
-		return data;
-	}
-
-	const fs = require( "fs" );
-	const { spawn } = require( "child_process" );
-	const gzip = require( "gzip-js" );
 	const nodeV16OrNewer = !/^v1[0-5]\./.test( process.version );
 	const nodeV17OrNewer = !/^v1[0-6]\./.test( process.version );
 	const customBrowsers = process.env.BROWSERS && process.env.BROWSERS.split( "," );
@@ -34,137 +20,8 @@ module.exports = function( grunt ) {
 		grunt.option( "filename", "jquery.js" );
 	}
 
-	grunt.option( "dist-folder", grunt.option( "esm" ) ? "dist-module" : "dist" );
-
-	const builtJsFiles = [
-		"dist/jquery.js",
-		"dist/jquery.min.js",
-		"dist/jquery.slim.js",
-		"dist/jquery.slim.min.js",
-		"dist-module/jquery.module.js",
-		"dist-module/jquery.module.min.js",
-		"dist-module/jquery.slim.module.js",
-		"dist-module/jquery.slim.module.min.js"
-	];
-
-	const builtJsMinFiles = builtJsFiles
-		.filter( filepath => filepath.endsWith( ".min.js" ) );
-
 	grunt.initConfig( {
 		pkg: grunt.file.readJSON( "package.json" ),
-		dst: readOptionalJSON( "dist/.destination.json" ),
-		compare_size: {
-			files: builtJsMinFiles,
-			options: {
-				compress: {
-					gz: function( contents ) {
-						return gzip.zip( contents, {} ).length;
-					}
-				},
-				cache: "build/.sizecache.json"
-			}
-		},
-		babel: {
-			options: {
-				sourceMap: "inline",
-				retainLines: true,
-				plugins: [ "@babel/transform-for-of" ]
-			},
-			tests: {
-				files: {
-					"test/data/core/jquery-iterability-transpiled.js":
-						"test/data/core/jquery-iterability-transpiled-es6.js"
-				}
-			}
-		},
-		build: {
-			all: {
-				dest: "dist/jquery.js",
-				minimum: [
-					"core"
-				],
-
-				// Exclude specified modules if the module matching the key is removed
-				removeWith: {
-					ajax: [ "manipulation/_evalUrl", "deprecated/ajax-event-alias" ],
-					callbacks: [ "deferred" ],
-					css: [ "effects", "dimensions", "offset" ],
-					"css/showHide": [ "effects" ],
-					deferred: {
-						remove: [ "ajax", "effects", "queue", "core/ready" ],
-						include: [ "core/ready-no-deferred" ]
-					},
-					event: [ "deprecated/ajax-event-alias", "deprecated/event" ],
-					selector: [ "css/hiddenVisibleSelectors", "effects/animatedSelector" ]
-				}
-			}
-		},
-		npmcopy: {
-			all: {
-				options: {
-					destPrefix: "external"
-				},
-				files: {
-					"bootstrap/bootstrap.css": "bootstrap/dist/css/bootstrap.css",
-					"bootstrap/bootstrap.min.css": "bootstrap/dist/css/bootstrap.min.css",
-					"bootstrap/bootstrap.min.css.map": "bootstrap/dist/css/bootstrap.min.css.map",
-
-					"core-js-bundle/core-js-bundle.js": "core-js-bundle/minified.js",
-					"core-js-bundle/LICENSE": "core-js-bundle/LICENSE",
-
-					"npo/npo.js": "native-promise-only/lib/npo.src.js",
-
-					"qunit/qunit.js": "qunit/qunit/qunit.js",
-					"qunit/qunit.css": "qunit/qunit/qunit.css",
-					"qunit/LICENSE.txt": "qunit/LICENSE.txt",
-
-					"requirejs/require.js": "requirejs/require.js",
-
-					"sinon/sinon.js": "sinon/pkg/sinon.js",
-					"sinon/LICENSE.txt": "sinon/LICENSE"
-				}
-			}
-		},
-		jsonlint: {
-			pkg: {
-				src: [ "package.json" ]
-			}
-		},
-		eslint: {
-			options: {
-				maxWarnings: 0
-			},
-
-			// We have to explicitly declare "src" property otherwise "newer"
-			// task wouldn't work properly :/
-			dist: {
-				src: builtJsFiles
-			},
-			dev: {
-				src: [
-					"src/**/*.js",
-					"Gruntfile.js",
-					"test/**/*.js",
-					"build/**/*.js",
-
-					// Ignore files from .eslintignore
-					// See https://github.com/sindresorhus/grunt-eslint/issues/119
-					...fs
-						.readFileSync( `${ __dirname }/.eslintignore`, "utf-8" )
-						.split( "\n" )
-						.filter( filePath => filePath )
-						.map( filePath => filePath[ 0 ] === "!" ?
-							filePath.slice( 1 ) :
-							`!${ filePath }`
-						),
-
-					// Explicitly ignore `dist/` & `dist-module/` as it could be unignored
-					// by the above `.eslintignore` parsing.
-					"!dist/**/*.js",
-					"!dist-module/**/*.js"
-				]
-			}
-		},
 		testswarm: {
 			tests: [
 
@@ -230,9 +87,14 @@ module.exports = function( grunt ) {
 					"external/npo/npo.js",
 					"external/requirejs/require.js",
 					"test/data/testinit.js",
-
 					"test/jquery.js",
 
+					{
+						pattern: "external/**",
+						included: false,
+						served: true,
+						nocache: true
+					},
 					{
 						pattern: "dist/jquery.*",
 						included: false,
@@ -246,7 +108,6 @@ module.exports = function( grunt ) {
 						served: true,
 						nocache: true
 					},
-					{ pattern: "external/**", included: false, served: true },
 					{
 						pattern: "test/**/*.@(js|css|jpg|html|xml|svg)",
 						included: false,
@@ -328,108 +189,27 @@ module.exports = function( grunt ) {
 				browsers: [ "IE" ],
 				singleRun: false
 			}
-		},
-		watch: {
-			files: [ "<%= eslint.dev.src %>" ],
-			tasks: [ "dev" ]
-		},
-		minify: {
-			all: {
-				files: {
-					[ "<%= grunt.option('dist-folder') %>/" +
-						"<%= grunt.option('filename').replace(/\\.js$/, '.min.js') %>" ]:
-						"<%= grunt.option('dist-folder') %>/<%= grunt.option('filename') %>"
-				},
-				options: {
-					sourceMap: {
-						filename: "<%= grunt.option('dist-folder') %>/" +
-							"<%= grunt.option('filename')" +
-							".replace(/\\.js$/, '.min.map') %>",
-
-						// The map's `files` & `sources` property are set incorrectly, fix
-						// them via overrides from the task config.
-						// See https://github.com/swc-project/swc/issues/7588#issuecomment-1624345254
-						overrides: {
-							file: "jquery.min.js",
-							sources: [
-								"jquery.js"
-							]
-						}
-					},
-					swc: {
-						format: {
-							ecma: grunt.option( "esm" ) ? 2015 : 5,
-							asciiOnly: true,
-							comments: false,
-							preamble: "/*! jQuery v4.0.0-pre | " +
-								"(c) OpenJS Foundation and other contributors | " +
-								"jquery.org/license */\n"
-						},
-						compress: {
-							ecma: grunt.option( "esm" ) ? 2015 : 5,
-							hoist_funs: false,
-							loops: false
-						},
-						mangle: true
-					}
-				}
-			}
 		}
 	} );
 
 	// Load grunt tasks from NPM packages
 	require( "load-grunt-tasks" )( grunt, {
-		pattern: nodeV16OrNewer ? [ "grunt-*" ] : [ "grunt-*", "!grunt-eslint" ]
+		pattern: [ "grunt-*" ]
 	} );
 
 	// Integrate jQuery specific tasks
-	grunt.loadTasks( "build/tasks" );
+	grunt.loadTasks( "build/grunt-tasks" );
 
 	grunt.registerTask( "print_old_node_message", ( ...args ) => {
 		var task = args.join( ":" );
 		grunt.log.writeln( "Old Node.js detected, running the task \"" + task + "\" skipped..." );
 	} );
 
-	grunt.registerTask( "build-all-variants",
-		"Build all variants of the full/slim build & a script/ESM one",
-		function() {
-			const done = this.async();
-
-			spawn( "npm run build-all-variants", {
-				stdio: "inherit",
-				shell: true
-			} )
-				.on( "close", code => {
-					done( code === 0 );
-				} );
-		} );
-
 	grunt.registerTask( "print_jsdom_message", () => {
 		grunt.log.writeln( "Node.js 17 or newer detected, skipping jsdom tests..." );
 	} );
 
-	grunt.registerTask( "lint", [
+	grunt.registerTask( "test:jsdom", [
-		"jsonlint",
-
-		// Running the full eslint task without breaking it down to targets
-		// would run the dist target first which would point to errors in the built
-		// file, making it harder to fix them. We want to check the built file only
-		// if we already know the source files pass the linter.
-		runIfNewNode( "eslint:dev" ),
-		runIfNewNode( "eslint:dist" )
-	] );
-
-	grunt.registerTask( "lint:newer", [
-		"newer:jsonlint",
-
-		// Don't replace it with just the task; see the above comment.
-		runIfNewNode( "newer:eslint:dev" ),
-		runIfNewNode( "newer:eslint:dist" )
-	] );
-
-	grunt.registerTask( "test:fast", [ "node_smoke_tests:commonjs:jquery" ] );
-	grunt.registerTask( "test:slow", [
-		runIfNewNode( "promises_aplus_tests" ),
 
 		// Support: Node.js 17+
 		// jsdom fails to connect to the Karma server in Node 17+.
@@ -437,33 +217,11 @@ module.exports = function( grunt ) {
 		nodeV17OrNewer ? "print_jsdom_message" : runIfNewNode( "karma:jsdom" )
 	] );
 
-	grunt.registerTask( "test:prepare", [
-		"npmcopy",
-		"qunit_fixture",
-		"babel:tests"
-	] );
-
 	grunt.registerTask( "test", [
-		"test:prepare",
+		"test:jsdom"
-		"test:fast",
-		"test:slow"
-	] );
-
-	grunt.registerTask( "dev", [
-		"build:*:*",
-		runIfNewNode( "newer:eslint:dev" ),
-		"newer:minify",
-		"dist:*",
-		"qunit_fixture",
-		"compare_size"
 	] );
 
 	grunt.registerTask( "default", [
-		runIfNewNode( "eslint:dev" ),
+		"test"
-		"build-all-variants",
-		"test:prepare",
-		runIfNewNode( "eslint:dist" ),
-		"test:fast",
-		"compare_size"
 	] );
 };

README.md

@@ -47,41 +47,47 @@ How to build your own jQuery
 
 First, [clone the jQuery git repo](https://help.github.com/en/github/creating-cloning-and-archiving-repositories/cloning-a-repository).
 
-Then, enter the jquery directory and run the build script:
+Then, enter the jquery directory, install dependencies, and run the build script:
+
 ```bash
-cd jquery && npm run build
+cd jquery
-```
+npm install
-The built version of jQuery will be put in the `dist/` subdirectory, along with the minified copy and associated map file.
+npm run build
-
-If you want to create custom build or help with jQuery development, it would be better to install [grunt command line interface](https://github.com/gruntjs/grunt-cli) as a global package:
-
-```
-npm install -g grunt-cli
-```
-Make sure you have `grunt` installed by testing:
-```
-grunt -V
 ```
 
-Now by running the `grunt` command, in the jquery directory, you can build a full version of jQuery, just like with an `npm run build` command:
+The built version of jQuery will be placed in the `dist/` directory, along with a minified copy and associated map file.
-```
+
-grunt
+## Build all jQuery release files
+
+To build all variants of jQuery, run the following command:
+
+```bash
+npm run build:all
 ```
 
-There are many other tasks available for jQuery Core:
+This will create all of the variants that jQuery includes in a release, including `jquery.js`, `jquery.slim.js`, `jquery.module.js`, and `jquery.slim.module.js` along their associated minified files and sourcemaps.
-```
+
-grunt -help
+`jquery.module.js` and `jquery.slim.module.js` are [ECMAScript modules](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules) that export `jQuery` and `$` as named exports are placed in the `dist-module/` directory rather than the `dist/` directory.
+
+## Building a Custom jQuery
+
+The build script can be used to create a custom version of jQuery that includes only the modules you need.
+
+Any module may be excluded except for `core`. When excluding `selector`, it is not removed but replaced with a small wrapper around native `querySelectorAll` (see below for more information).
+
+### Build Script Help
+
+To see the full list of available options for the build script, run the following:
+
+```bash
+npm run build -- --help
 ```
 
 ### Modules
 
-Special builds can be created that exclude subsets of jQuery functionality.
+To exclude a module, pass its path relative to the `src` folder (without the `.js` extension) to the `--exclude` option. When using the `--include` option, the default includes are dropped and a build is created with only those modules.
-This allows for smaller custom builds when the builder is certain that those parts of jQuery are not being used.
-For example, an app that only used JSONP for `$.ajax()` and did not need to calculate offsets or positions of elements could exclude the offset and ajax/xhr modules.
 
-Any module may be excluded except for `core`, and `selector`. To exclude a module, pass its path relative to the `src` folder (without the `.js` extension).
+Some example modules that can be excluded or included are:
-
-Some example modules that can be excluded are:
 
 - **ajax**: All AJAX functionality: `$.ajax()`, `$.get()`, `$.post()`, `$.ajaxSetup()`, `.load()`, transports, and ajax event shorthands such as `.ajaxStart()`.
 - **ajax/xhr**: The XMLHTTPRequest AJAX transport only.
@@ -97,96 +103,81 @@ Some example modules that can be excluded are:
 - **offset**: The `.offset()`, `.position()`, `.offsetParent()`, `.scrollLeft()`, and `.scrollTop()` methods.
 - **wrap**: The `.wrap()`, `.wrapAll()`, `.wrapInner()`, and `.unwrap()` methods.
 - **core/ready**: Exclude the ready module if you place your scripts at the end of the body. Any ready callbacks bound with `jQuery()` will simply be called immediately. However, `jQuery(document).ready()` will not be a function and `.on("ready", ...)` or similar will not be triggered.
-- **deferred**: Exclude jQuery.Deferred. This also removes jQuery.Callbacks. *Note* that modules that depend on jQuery.Deferred(AJAX, effects, core/ready) will not be removed and will still expect jQuery.Deferred to be there. Include your own jQuery.Deferred implementation or exclude those modules as well (`grunt custom:-deferred,-ajax,-effects,-core/ready`).
+- **deferred**: Exclude jQuery.Deferred. This also excludes all modules that rely on Deferred, including **ajax**, **effects**, and **queue**, but replaces **core/ready** with **core/ready-no-deferred**.
 - **exports/global**: Exclude the attachment of global jQuery variables ($ and jQuery) to the window.
 - **exports/amd**: Exclude the AMD definition.
 
-As a special case, you may also replace the full jQuery `selector` module by using a special flag `grunt custom:-selector`.
+- **selector**: The full jQuery selector engine. When this module is excluded, it is replaced with a rudimentary selector engine based on the browser's `querySelectorAll` method that does not support jQuery selector extensions or enhanced semantics. See the [selector-native.js](https://github.com/jquery/jquery/blob/main/src/selector-native.js) file for details.
-
-- **selector**: The full jQuery selector engine. When this module is excluded, it is replaced by a rudimentary selector engine based on the browser's `querySelectorAll` method that does not support jQuery selector extensions or enhanced semantics. See the [selector-native.js](https://github.com/jquery/jquery/blob/main/src/selector-native.js) file for details.
 
 *Note*: Excluding the full `selector` module will also exclude all jQuery selector extensions (such as `effects/animatedSelector` and `css/hiddenVisibleSelectors`).
 
-The build process shows a message for each dependent module it excludes or includes.
-
 ##### AMD name
 
-As an option, you can set the module name for jQuery's AMD definition. By default, it is set to "jquery", which plays nicely with plugins and third-party libraries, but there may be cases where you'd like to change this. Simply pass it to the `--amd` parameter:
+You can set the module name for jQuery's AMD definition. By default, it is set to "jquery", which plays nicely with plugins and third-party libraries, but there may be cases where you'd like to change this. Pass it to the `--amd` parameter:
 
 ```bash
-grunt custom --amd="custom-name"
+npm run build -- --amd="custom-name"
 ```
 
-Or, to define anonymously, set the name to an empty string.
+Or, to define anonymously, leave the name blank.
 
 ```bash
-grunt custom --amd=""
+npm run build -- --amd
 ```
 
-##### File name
+##### File name and directory
 
-The default name for the built jQuery file is `jquery.js`; it is placed under the `dist/` directory. It's possible to change the file name using the `--filename` parameter:
+The default name for the built jQuery file is `jquery.js`; it is placed under the `dist/` directory. It's possible to change the file name using `--filename` and the directory using `--dir`. `--dir` is relative to the project root.
 
 ```bash
-grunt custom:slim --filename="jquery.slim.js"
+npm run build -- --slim --filename="jquery.slim.js" --dir="/tmp"
 ```
 
-This would create a slim version of jQuery and place it under `dist/jquery.slim.js`. In fact, this is exactly the command we use to generate the slim jQuery during the release process.
+This would create a slim version of jQuery and place it under `tmp/jquery.slim.js`.
 
 ##### ECMAScript Module (ESM) mode
 
 By default, jQuery generates a regular script JavaScript file. You can also generate an ECMAScript module exporting `jQuery` as the default export using the `--esm` parameter:
 
 ```bash
-grunt custom --esm
+npm run build -- --filename=jquery.module.js --esm
-```
-
-The default is `script` but you can also pass it explicitly via `--no-esm`:
-
-```bash
-grunt custom --no-esm
 ```
 
 #### Custom Build Examples
 
-To create a custom build, first check out the version:
+Create a custom build using `npm run build`, listing the modules to be excluded. Excluding a top-level module also excludes its corresponding directory of modules.
-
-```bash
-git pull; git checkout VERSION
-```
-
-Where VERSION is the version you want to customize. Then, make sure all Node dependencies are installed:
-
-```bash
-npm install
-```
-
-Create the custom build using the `grunt custom` option, listing the modules to be excluded.
 
 Exclude all **ajax** functionality:
 
 ```bash
-grunt custom:-ajax
+npm run build -- --exclude=ajax
 ```
 
 Excluding **css** removes modules depending on CSS: **effects**, **offset**, **dimensions**.
 
 ```bash
-grunt custom:-css
+npm run build -- --exclude=css
 ```
 
-Exclude a bunch of modules:
+Exclude a bunch of modules (`-e` is an alias for `--exclude`):
 
 ```bash
-grunt custom:-ajax/jsonp,-css,-deprecated,-dimensions,-effects,-offset,-wrap
+npm run build -- -e ajax/jsonp -e css -e deprecated -e dimensions -e effects -e offset -e wrap
 ```
 
-There is also a special alias to generate a build with the same configuration as the official jQuery Slim build is generated:
+There is a special alias to generate a build with the same configuration as the official jQuery Slim build:
+
 ```bash
-grunt custom:slim
+npm run build -- --filename=jquery.slim.js --slim
 ```
 
-For questions or requests regarding custom builds, please start a thread on the [Developing jQuery Core](https://forum.jquery.com/developing-jquery-core) section of the forum. Due to the combinatorics and custom nature of these builds, they are not regularly tested in jQuery's unit test process.
+Or, to create the slim build as an esm module:
+
+```bash
+npm run build -- --filename=jquery.slim.module.js --slim --esm
+```
+
+*Non-official custom builds are not regularly tested. Use them at your own risk.*
 
 Running the Unit Tests
 --------------------------------------
@@ -197,10 +188,10 @@ Make sure you have the necessary dependencies:
 npm install
 ```
 
-Start `grunt watch` or `npm start` to auto-build jQuery as you work:
+Start `npm start` to auto-build jQuery as you work:
 
 ```bash
-grunt watch
+npm start
 ```
 
 
@@ -213,35 +204,6 @@ Run the unit tests with a local server that supports PHP. Ensure that you run th
 
 
 
-
-Building to a different directory
----------------------------------
-
-To copy the built jQuery files from `/dist` to another directory:
-
-```bash
-grunt && grunt dist:/path/to/special/location/
-```
-With this example, the output files would be:
-
-```bash
-/path/to/special/location/jquery.js
-/path/to/special/location/jquery.min.js
-```
-
-To add a permanent copy destination, create a file in `dist/` called ".destination.json". Inside the file, paste and customize the following:
-
-```json
-
-{
-  "/Absolute/path/to/other/destination": true
-}
-```
-
-Additionally, both methods can be combined.
-
-
-
 Essential Git
 -------------
 

build/command.js

@@ -0,0 +1,75 @@
+"use strict";
+
+const { build } = require( "./tasks/build" );
+const yargs = require( "yargs/yargs" );
+const slimExclude = require( "./tasks/lib/slim-exclude" );
+
+const argv = yargs( process.argv.slice( 2 ) )
+	.version( false )
+	.command( {
+		command: "[options]",
+		describe: "Build a jQuery bundle"
+	} )
+	.option( "filename", {
+		alias: "f",
+		type: "string",
+		description:
+			"Set the filename of the built file. Defaults to jquery.js."
+	} )
+	.option( "dir", {
+		alias: "d",
+		type: "string",
+		description:
+			"Set the dir to which to output the built file. Defaults to /dist."
+	} )
+	.option( "version", {
+		alias: "v",
+		type: "string",
+		description:
+			"Set the version to include in the built file. " +
+			"Defaults to the version in package.json plus the " +
+			"short commit SHA and any excluded modules."
+	} )
+	.option( "watch", {
+		alias: "w",
+		type: "boolean",
+		description:
+			"Watch the source files and rebuild when they change."
+	} )
+	.option( "exclude", {
+		alias: "e",
+		type: "array",
+		description:
+			"Modules to exclude from the build. " +
+			"Specifying this option will cause the " +
+			"specified modules to be excluded from the build."
+	} )
+	.option( "include", {
+		alias: "i",
+		type: "array",
+		description:
+			"Modules to include in the build. " +
+			"Specifying this option will override the " +
+			"default included modules and only include these modules."
+	} )
+	.option( "esm", {
+		type: "boolean",
+		description:
+			"Build an ES module (ESM) bundle. " +
+			"By default, a UMD bundle is built."
+	} )
+	.option( "slim", {
+		alias: "s",
+		type: "boolean",
+		description: "Build a slim bundle, which excludes " +
+			slimExclude.join( ", " )
+	} )
+	.option( "amd", {
+		type: "string",
+		description:
+			"Set the name of the AMD module. Leave blank to make an anonymous module."
+	} )
+	.help()
+	.argv;
+
+build( argv );

build/tasks/build.js

@@ -6,350 +6,356 @@
 
 "use strict";
 
-module.exports = function( grunt ) {
+const fs = require( "fs" );
-	const fs = require( "fs" );
+const path = require( "path" );
-	const path = require( "path" );
+const util = require( "util" );
-	const rollup = require( "rollup" );
+const exec = util.promisify( require( "child_process" ).exec );
-	const slimBuildFlags = require( "./lib/slim-build-flags" );
+const rollup = require( "rollup" );
-	const rollupFileOverrides = require( "./lib/rollup-plugin-file-overrides" );
+const excludedFromSlim = require( "./lib/slim-exclude" );
-	const srcFolder = path.resolve( `${ __dirname }/../../src` );
+const rollupFileOverrides = require( "./lib/rollup-plugin-file-overrides" );
-	const read = function( fileName ) {
+const pkg = require( "../../package.json" );
-		return grunt.file.read( `${ srcFolder }/${ fileName }` );
+const isCleanWorkingDir = require( "./lib/isCleanWorkingDir" );
+const minify = require( "./minify" );
+const getTimestamp = require( "./lib/getTimestamp" );
+const verifyNodeVersion = require( "./lib/verifyNodeVersion" );
+const srcFolder = path.resolve( __dirname, "../../src" );
+
+const minimum = [ "core" ];
+
+// Exclude specified modules if the module matching the key is removed
+const removeWith = {
+	ajax: [ "manipulation/_evalUrl", "deprecated/ajax-event-alias" ],
+	callbacks: [ "deferred" ],
+	css: [ "effects", "dimensions", "offset" ],
+	"css/showHide": [ "effects" ],
+	deferred: {
+		remove: [ "ajax", "effects", "queue", "core/ready" ],
+		include: [ "core/ready-no-deferred" ]
+	},
+	event: [ "deprecated/ajax-event-alias", "deprecated/event" ],
+	selector: [ "css/hiddenVisibleSelectors", "effects/animatedSelector" ]
+};
+
+async function read( filename ) {
+	return fs.promises.readFile( path.join( srcFolder, filename ), "utf8" );
+}
+
+// Remove the src folder and file extension
+// and ensure unix-style path separators
+function moduleName( filename ) {
+	return filename
+		.replace( `${srcFolder}${path.sep}`, "" )
+		.replace( /\.js$/, "" )
+		.split( path.sep )
+		.join( path.posix.sep );
+}
+
+async function readdirRecursive( dir, all = [] ) {
+	let files;
+	try {
+		files = await fs.promises.readdir( path.join( srcFolder, dir ), {
+			withFileTypes: true
+		} );
+	} catch ( e ) {
+		return all;
+	}
+	for ( const file of files ) {
+		const filepath = path.join( dir, file.name );
+
+		if ( file.isDirectory() ) {
+			all.push( ...( await readdirRecursive( filepath ) ) );
+		} else {
+			all.push( moduleName( filepath ) );
+		}
+	}
+	return all;
+}
+
+async function getOutputRollupOptions( { esm = false } = {} ) {
+	const wrapperFileName = `wrapper${esm ? "-esm" : ""}.js`;
+	const wrapperSource = await read( wrapperFileName );
+
+	// Catch `// @CODE` and subsequent comment lines event if they don't start
+	// in the first column.
+	const wrapper = wrapperSource.split(
+		/[\x20\t]*\/\/ @CODE\n(?:[\x20\t]*\/\/[^\n]+\n)*/
+	);
+
+	return {
+
+		// The ESM format is not actually used as we strip it during the
+		// build, inserting our own wrappers; it's just that it doesn't
+		// generate any extra wrappers so there's nothing for us to remove.
+		format: "esm",
+
+		intro: wrapper[ 0 ].replace( /\n*$/, "" ),
+		outro: wrapper[ 1 ].replace( /^\n*/, "" )
 	};
+}
 
-	const inputFileName = "jquery.js";
+const fileOverrides = new Map();
-	const inputRollupOptions = {
-		input: `${ srcFolder }/${ inputFileName }`
-	};
 
-	function getOutputRollupOptions( {
+function setOverride( filePath, source ) {
-		esm = false
-	} = {} ) {
-		const wrapperFileName = `wrapper${ esm ? "-esm" : "" }.js`;
 
-		// Catch `// @CODE` and subsequent comment lines event if they don't start
+	// We want normalized paths in overrides as they will be matched
-		// in the first column.
+	// against normalized paths in the file overrides Rollup plugin.
-		const wrapper = read( wrapperFileName )
+	fileOverrides.set( path.resolve( filePath ), source );
-			.split( /[\x20\t]*\/\/ @CODE\n(?:[\x20\t]*\/\/[^\n]+\n)*/ );
+}
 
-		return {
+function unique( array ) {
+	return [ ...new Set( array ) ];
+}
 
-			// The ESM format is not actually used as we strip it during the
+async function checkExclude( exclude, include ) {
-			// build, inserting our own wrappers; it's just that it doesn't
+	const included = [ ...include ];
-			// generate any extra wrappers so there's nothing for us to remove.
+	const excluded = [ ...exclude ];
-			format: "esm",
 
-			intro: `${ wrapper[ 0 ].replace( /\n*$/, "" ) }`,
+	for ( const module of exclude ) {
-			outro: wrapper[ 1 ].replace( /^\n*/, "" )
+		if ( minimum.indexOf( module ) !== -1 ) {
-		};
+			throw new Error( `Module \"${module}\" is a minimum requirement.` );
+		}
+
+		// Exclude all files in the dir of the same name
+		// These are the removable dependencies
+		// It's fine if the directory is not there
+		// `selector` is a special case as we don't just remove
+		// the module, but we replace it with `selector-native`
+		// which re-uses parts of the `src/selector` dir.
+		if ( module !== "selector" ) {
+			const files = await readdirRecursive( module );
+			excluded.push( ...files );
+		}
+
+		// Check removeWith list
+		const additional = removeWith[ module ];
+		if ( additional ) {
+			const [ additionalExcluded, additionalIncluded ] = await checkExclude(
+				additional.remove || additional,
+				additional.include || []
+			);
+			excluded.push( ...additionalExcluded );
+			included.push( ...additionalIncluded );
+		}
 	}
 
-	const fileOverrides = new Map();
+	return [ unique( excluded ), unique( included ) ];
+}
 
-	function getOverride( filePath ) {
+async function writeCompiled( { code, dir, filename, version } ) {
-		return fileOverrides.get( path.resolve( filePath ) );
+	const compiledContents = code
+
+		// Embed Version
+		.replace( /@VERSION/g, version )
+
+		// Embed Date
+		// yyyy-mm-ddThh:mmZ
+		.replace( /@DATE/g, new Date().toISOString().replace( /:\d+\.\d+Z$/, "Z" ) );
+
+	await fs.promises.writeFile( path.join( dir, filename ), compiledContents );
+	console.log( `[${getTimestamp()}] ${filename} v${version} created.` );
+}
+
+// Build jQuery ECMAScript modules
+async function build( {
+	amd,
+	dir = "dist",
+	exclude = [],
+	filename = "jquery.js",
+	include = [],
+	esm = false,
+	slim = false,
+	version,
+	watch = false
+} = {} ) {
+	const pureSlim = slim && !exclude.length && !include.length;
+
+	// Add the short commit hash to the version string
+	// when the version is not for a release.
+	if ( !version ) {
+		const { stdout } = await exec( "git rev-parse --short HEAD" );
+		const isClean = await isCleanWorkingDir();
+
+		// "+[slim.]SHA" is semantically correct
+		// Add ".dirty" as well if the working dir is not clean
+		version = `${pkg.version}+${slim ? "slim." : ""}${stdout.trim()}${isClean ? "" : ".dirty"}`;
+	} else if ( slim ) {
+		version += "+slim";
 	}
 
-	function setOverride( filePath, source ) {
+	await fs.promises.mkdir( dir, { recursive: true } );
 
-		// We want normalized paths in overrides as they will be matched
+	// Exclude slim modules when slim is true
-		// against normalized paths in the file overrides Rollup plugin.
+	const [ excluded, included ] = await checkExclude(
-		fileOverrides.set( path.resolve( filePath ), source );
+		slim ? exclude.concat( excludedFromSlim ) : exclude,
+		include
+	);
+
+	// Replace exports/global with a noop noConflict
+	if ( excluded.includes( "exports/global" ) ) {
+		const index = excluded.indexOf( "exports/global" );
+		setOverride(
+			`${srcFolder}/exports/global.js`,
+			"import { jQuery } from \"../core.js\";\n\n" +
+				"jQuery.noConflict = function() {};"
+		);
+		excluded.splice( index, 1 );
 	}
 
-	grunt.registerMultiTask(
+	// Set a desired AMD name.
-		"build",
+	if ( amd != null ) {
-		"Build jQuery ECMAScript modules, " +
+		if ( amd ) {
-			"(include/exclude modules with +/- flags), embed date/version",
+			console.log( "Naming jQuery with AMD name: " + amd );
-	async function() {
+		} else {
-		const done = this.async();
+			console.log( "AMD name now anonymous" );
+		}
 
-		try {
+		// Replace the AMD name in the AMD export
-			const flags = this.flags;
+		// No name means an anonymous define
-			const optIn = flags[ "*" ];
+		const amdExportContents = await read( "exports/amd.js" );
-			let name = grunt.option( "filename" );
+		setOverride(
-			const esm = !!grunt.option( "esm" );
+			`${srcFolder}/exports/amd.js`,
-			const distFolder = grunt.option( "dist-folder" );
+			amdExportContents.replace(
-			const minimum = this.data.minimum;
-			const removeWith = this.data.removeWith;
-			const excluded = [];
-			const included = [];
-			let version = grunt.config( "pkg.version" );
-
-			// We'll skip printing the whole big exclusions for a bare `build:*:*:slim` which
-			// usually comes from `custom:slim`.
-			const isPureSlim = !!( flags.slim && flags[ "*" ] &&
-				Object.keys( flags ).length === 2 );
-
-			delete flags[ "*" ];
-
-			if ( flags.slim ) {
-				delete flags.slim;
-				for ( const flag of slimBuildFlags ) {
-					flags[ flag ] = true;
-				}
-			}
-
-
-			/**
-			 * Recursively calls the excluder to remove on all modules in the list
-			 * @param {Array} list
-			 * @param {String} [prepend] Prepend this to the module name.
-			 *  Indicates we're walking a directory
-			 */
-			const excludeList = ( list, prepend ) => {
-				if ( list ) {
-					prepend = prepend ? `${ prepend }/` : "";
-					list.forEach( function( module ) {
-
-						// Exclude var modules as well
-						if ( module === "var" ) {
-							excludeList(
-								fs.readdirSync( `${ srcFolder }/${ prepend }${ module }` ),
-								prepend + module
-							);
-							return;
-						}
-						if ( prepend ) {
-
-							// Skip if this is not a js file and we're walking files in a dir
-							if ( !( module = /([\w-\/]+)\.js$/.exec( module ) ) ) {
-								return;
-							}
-
-							// Prepend folder name if passed
-							// Remove .js extension
-							module = prepend + module[ 1 ];
-						}
-
-						// Avoid infinite recursion
-						if ( excluded.indexOf( module ) === -1 ) {
-							excluder( "-" + module );
-						}
-					} );
-				}
-			};
-
-			/**
-			 * Adds the specified module to the excluded or included list, depending on the flag
-			 * @param {String} flag A module path relative to
-			 *  the src directory starting with + or - to indicate
-			 *  whether it should be included or excluded
-			 */
-			const excluder = flag => {
-				let additional;
-				const m = /^(\+|-|)([\w\/-]+)$/.exec( flag );
-				const exclude = m[ 1 ] === "-";
-				const module = m[ 2 ];
-
-				if ( exclude ) {
-
-					// Can't exclude certain modules
-					if ( minimum.indexOf( module ) === -1 ) {
-
-						// Add to excluded
-						if ( excluded.indexOf( module ) === -1 ) {
-							grunt.log.writeln( flag );
-							excluded.push( module );
-
-							// Exclude all files in the folder of the same name
-							// These are the removable dependencies
-							// It's fine if the directory is not there
-							try {
-
-								// `selector` is a special case as we don't just remove
-								// the module, but we replace it with `selector-native`
-								// which re-uses parts of the `src/selector` folder.
-								if ( module !== "selector" ) {
-									excludeList(
-										fs.readdirSync( `${ srcFolder }/${ module }` ),
-										module
-									);
-								}
-							} catch ( e ) {
-								grunt.verbose.writeln( e );
-							}
-						}
-
-						additional = removeWith[ module ];
-
-						// Check removeWith list
-						if ( additional ) {
-							excludeList( additional.remove || additional );
-							if ( additional.include ) {
-								included.push( ...additional.include );
-								grunt.log.writeln( "+" + additional.include );
-							}
-						}
-					} else {
-						grunt.log.error( "Module \"" + module + "\" is a minimum requirement." );
-					}
-				} else {
-					grunt.log.writeln( flag );
-					included.push( module );
-				}
-			};
-
-			// Filename can be passed to the command line using
-			// command line options
-			// e.g. grunt build --filename=jquery-custom.js
-			name = name ? `${ distFolder }/${ name }` : this.data.dest;
-
-			// append commit id to version
-			if ( process.env.COMMIT ) {
-				version += " " + process.env.COMMIT;
-			}
-
-			// figure out which files to exclude based on these rules in this order:
-			//  dependency explicit exclude
-			//  > explicit exclude
-			//  > explicit include
-			//  > dependency implicit exclude
-			//  > implicit exclude
-			// examples:
-			//  *                  none (implicit exclude)
-			//  *:*                all (implicit include)
-			//  *:*:-css           all except css and dependents (explicit > implicit)
-			//  *:*:-css:+effects  same (excludes effects because explicit include is
-			//                     trumped by explicit exclude of dependency)
-			//  *:+effects         none except effects and its dependencies
-			//                     (explicit include trumps implicit exclude of dependency)
-			for ( const flag in flags ) {
-				excluder( flag );
-			}
-
-			// Remove the jQuery export from the entry file, we'll use our own
-			// custom wrapper.
-			setOverride( inputRollupOptions.input,
-				read( inputFileName ).replace( /\n*export \{ jQuery, jQuery as \$ };\n*/, "\n" ) );
-
-			// Replace exports/global with a noop noConflict
-			if ( excluded.includes( "exports/global" ) ) {
-				const index = excluded.indexOf( "exports/global" );
-				setOverride( `${ srcFolder }/exports/global.js`,
-					"import jQuery from \"../core.js\";\n\n" +
-						"jQuery.noConflict = function() {};" );
-				excluded.splice( index, 1 );
-			}
-
-			// Set a desired AMD name.
-			let amdName = grunt.option( "amd" );
-			if ( amdName != null ) {
-				if ( amdName ) {
-					grunt.log.writeln( "Naming jQuery with AMD name: " + amdName );
-				} else {
-					grunt.log.writeln( "AMD name now anonymous" );
-				}
 
 				// Remove the comma for anonymous defines
-				setOverride( `${ srcFolder }/exports/amd.js`,
+				/(\s*)"jquery"(,\s*)/,
-					read( "exports/amd.js" )
+				amd ? `$1\"${amd}\"$2` : " "
-						.replace( /(\s*)"jquery"(,\s*)/,
+			)
-							amdName ? "$1\"" + amdName + "\"$2" : "" ) );
+		);
-			}
+	}
 
-			grunt.verbose.writeflags( excluded, "Excluded" );
+	// Append excluded modules to version.
-			grunt.verbose.writeflags( included, "Included" );
+	// Skip adding exclusions for slim builds.
+	// Don't worry about semver syntax for these.
+	if ( !pureSlim && excluded.length ) {
+		version += " -" + excluded.join( ",-" );
+	}
 
-			// Indicate a Slim build without listing all the exclusions
+	// Append extra included modules to version.
-			// to save space.
+	if ( !pureSlim && included.length ) {
-			if ( isPureSlim ) {
+		version += " +" + included.join( ",+" );
-				version += " slim";
+	}
 
-			// Append excluded modules to version.
+	const inputOptions = {
-			} else if ( excluded.length ) {
+		input: `${srcFolder}/jquery.js`
-				version += " -" + excluded.join( ",-" );
+	};
-			}
 
-			if ( excluded.length ) {
+	const includedImports = included
+		.map( ( module ) => `import "./${module}.js";` )
+		.join( "\n" );
 
-				// Set pkg.version to version with excludes or with the "slim" marker,
+	const jQueryFileContents = await read( "jquery.js" );
-				// so minified file picks it up but skip the commit hash the same way
+	if ( include.length ) {
-				// it's done for the full build.
-				const commitlessVersion = version.replace( " " + process.env.COMMIT, "" );
-				grunt.config.set( "pkg.version", commitlessVersion );
-				grunt.verbose.writeln( "Version changed to " + commitlessVersion );
 
-				// Replace excluded modules with empty sources.
+		// If include is specified, only add those modules.
-				for ( const module of excluded ) {
+		setOverride( inputOptions.input, includedImports );
-					setOverride(
+	} else {
-						`${ srcFolder }/${ module }.js`,
 
-						// The `selector` module is not removed, but replaced
+		// Remove the jQuery export from the entry file, we'll use our own
-						// with `selector-native`.
+		// custom wrapper.
-						module === "selector" ? read( "selector-native.js" ) : ""
+		setOverride(
-					);
+			inputOptions.input,
-				}
+			jQueryFileContents.replace( /\n*export \{ jQuery, jQuery as \$ };\n*/, "\n" ) +
-			}
+				includedImports
+		);
+	}
 
-			// Turn off opt-in if necessary
+	// Replace excluded modules with empty sources.
-			if ( !optIn ) {
+	for ( const module of excluded ) {
+		setOverride(
+			`${srcFolder}/${module}.js`,
 
-				// Remove the default inclusions, they will be overwritten with the explicitly
+			// The `selector` module is not removed, but replaced
-				// included ones.
+			// with `selector-native`.
-				setOverride( inputRollupOptions.input, "" );
+			module === "selector" ? await read( "selector-native.js" ) : ""
+		);
+	}
 
-			}
+	const bundle = await rollup.rollup( {
-
+		...inputOptions,
-			// Import the explicitly included modules.
+		plugins: [ rollupFileOverrides( fileOverrides ) ]
-			if ( included.length ) {
-				setOverride( inputRollupOptions.input,
-					getOverride( inputRollupOptions.input ) + included
-						.map( module => `import "./${module}.js";` )
-						.join( "\n" ) );
-			}
-
-			const bundle = await rollup.rollup( {
-				...inputRollupOptions,
-				plugins: [ rollupFileOverrides( fileOverrides ) ]
-			} );
-
-			const outputRollupOptions =
-				getOutputRollupOptions( { esm } );
-
-			const { output: [ { code } ] } = await bundle.generate( outputRollupOptions );
-
-			const compiledContents = code
-
-				// Embed Version
-				.replace( /@VERSION/g, version )
-
-				// Embed Date
-				// yyyy-mm-ddThh:mmZ
-				.replace(
-					/@DATE/g,
-					( new Date() ).toISOString()
-						.replace( /:\d+\.\d+Z$/, "Z" )
-				);
-
-			grunt.file.write( name, compiledContents );
-			grunt.log.ok( `File '${ name }' created.` );
-			done();
-		} catch ( err ) {
-			done( err );
-		}
 	} );
 
-	// Special "alias" task to make custom build creation less grawlix-y
+	const outputOptions = await getOutputRollupOptions( { esm } );
-	// Translation example
-	//
-	//   grunt custom:+ajax,-dimensions,-effects,-offset
-	//
-	// Becomes:
-	//
-	//   grunt build:*:*:+ajax:-dimensions:-effects:-offset
-	//
-	// There's also a special "slim" alias that resolves to the jQuery Slim build
-	// configuration:
-	//
-	//   grunt custom:slim
-	grunt.registerTask( "custom", function() {
-		const args = this.args;
-		const modules = args.length ?
-			args[ 0 ].split( "," ).join( ":" ) :
-			"";
 
-		grunt.log.writeln( "Creating custom build...\n" );
+	if ( watch ) {
-		grunt.task.run( [ "build:*:*" + ( modules ? ":" + modules : "" ), "minify", "dist" ] );
+		const watcher = rollup.watch( {
+			...inputOptions,
+			output: [ outputOptions ],
+			plugins: [ rollupFileOverrides( fileOverrides ) ],
+			watch: {
+				include: `${srcFolder}/**`,
+				skipWrite: true
+			}
+		} );
+
+		watcher.on( "event", async( event ) => {
+			switch ( event.code ) {
+				case "ERROR":
+					console.error( event.error );
+					break;
+				case "BUNDLE_END":
+					const {
+						output: [ { code } ]
+					} = await event.result.generate( outputOptions );
+
+					await writeCompiled( {
+						code,
+						dir,
+						filename,
+						version
+					} );
+
+					await minify( { dir, filename, esm } );
+					break;
+			}
+		} );
+
+		return watcher;
+	} else {
+		const {
+			output: [ { code } ]
+		} = await bundle.generate( outputOptions );
+
+		await writeCompiled( { code, dir, filename, version } );
+		await minify( { dir, filename, esm } );
+	}
+}
+
+async function buildDefaultFiles( { version, watch } = {} ) {
+	await Promise.all( [
+		build( { version, watch } ),
+		build( { filename: "jquery.slim.js", slim: true, version, watch } ),
+		build( {
+			dir: "dist-module",
+			filename: "jquery.module.js",
+			esm: true,
+			version,
+			watch
+		} ),
+		build( {
+			dir: "dist-module",
+			filename: "jquery.slim.module.js",
+			esm: true,
+			slim: true,
+			version,
+			watch
+		} )
+	] );
+
+	// Earlier Node.js versions do not support the ESM format.
+	if ( !verifyNodeVersion() ) {
+		return;
+	}
+
+	const { compareSize } = await import( "./compare_size.mjs" );
+	return compareSize( {
+		files: [
+			"dist/jquery.min.js",
+			"dist/jquery.slim.min.js",
+			"dist-module/jquery.module.min.js",
+			"dist-module/jquery.slim.module.min.js"
+		]
 	} );
-};
+}
+
+module.exports = { build, buildDefaultFiles };

build/tasks/compare_size.mjs

@@ -0,0 +1,128 @@
+import chalk from "chalk";
+import fs from "node:fs";
+import { promisify } from "node:util";
+import zlib from "node:zlib";
+import { exec as nodeExec } from "node:child_process";
+import isCleanWorkingDir from "./lib/isCleanWorkingDir.js";
+
+const gzip = promisify( zlib.gzip );
+const exec = promisify( nodeExec );
+
+async function getBranchName() {
+	const { stdout } = await exec( "git rev-parse --abbrev-ref HEAD" );
+	return stdout.trim();
+}
+
+async function getCache( loc ) {
+	try {
+		const contents = await fs.promises.readFile( loc, "utf8" );
+		return JSON.parse( contents );
+	} catch ( err ) {
+		return {};
+	}
+}
+
+function saveCache( loc, cache ) {
+	return fs.promises.writeFile( loc, JSON.stringify( cache ) );
+}
+
+function compareSizes( existing, current, padLength ) {
+	if ( typeof current !== "number" ) {
+		return chalk.grey( `${existing}`.padStart( padLength ) );
+	}
+	const delta = current - existing;
+	if ( delta > 0 ) {
+		return chalk.red( `+${delta}`.padStart( padLength ) );
+	}
+	return chalk.green( `${delta}`.padStart( padLength ) );
+}
+
+export async function compareSize( { cache = ".sizecache.json", files } = {} ) {
+	if ( !files || !files.length ) {
+		throw new Error( "No files specified" );
+	}
+
+	const branch = await getBranchName();
+	const sizeCache = await getCache( cache );
+
+	let rawPadLength = 0;
+	let gzPadLength = 0;
+	const results = await Promise.all(
+		files.map( async function( filename ) {
+
+			let contents = await fs.promises.readFile( filename, "utf8" );
+
+			// Remove the banner for size comparisons.
+			// The version string can vary widely by short SHA.
+			contents = contents.replace( /\/\*\! jQuery[^\n]+/, "" );
+
+			const size = Buffer.byteLength( contents, "utf8" );
+			const gzippedSize = ( await gzip( contents ) ).length;
+
+			// Add one to give space for the `+` or `-` in the comparison
+			rawPadLength = Math.max( rawPadLength, size.toString().length + 1 );
+			gzPadLength = Math.max( gzPadLength, gzippedSize.toString().length + 1 );
+
+			return { filename, raw: size, gz: gzippedSize };
+		} )
+	);
+
+	const header = "raw".padStart( rawPadLength ) +
+		"gz".padStart( gzPadLength + 1 ) +
+		" Filename";
+
+	const sizes = results.map( function( result ) {
+		const rawSize = result.raw.toString().padStart( rawPadLength );
+		const gzSize = result.gz.toString().padStart( gzPadLength );
+		return `${rawSize} ${gzSize} ${result.filename}`;
+	} );
+
+	const comparisons = Object.keys( sizeCache ).map( function( branch ) {
+		const branchSizes = Object.keys( sizeCache[ branch ] ).map( function( filename ) {
+			const branchResult = sizeCache[ branch ][ filename ];
+			const compareResult = results.find( function( result ) {
+				return result.filename === filename;
+			} ) || {};
+
+			const compareRaw = compareSizes( branchResult.raw, compareResult.raw, rawPadLength );
+			const compareGz = compareSizes( branchResult.gz, compareResult.gz, gzPadLength );
+			return `${compareRaw} ${compareGz} ${filename}`;
+		} );
+
+		return [
+			"", // New line before each branch
+			chalk.bold( branch ),
+			header,
+			...branchSizes
+		].join( "\n" );
+	} );
+
+	const output = [
+		"", // Opening new line
+		chalk.bold( "Sizes" ),
+		header,
+		...sizes,
+		...comparisons,
+		"" // Closing new line
+	].join( "\n" );
+
+	console.log( output );
+
+	// Only save cache for the current branch
+	// if the working directory is clean.
+	if ( await isCleanWorkingDir() ) {
+		sizeCache[ branch ] = {};
+		results.forEach( function( result ) {
+			sizeCache[ branch ][ result.filename ] = {
+				raw: result.raw,
+				gz: result.gz
+			};
+		} );
+
+		await saveCache( cache, sizeCache );
+
+		console.log( `Saved cache for ${branch}.` );
+	}
+
+	return results;
+}

build/tasks/dist.js

@@ -1,72 +1,31 @@
 "use strict";
 
-module.exports = function( grunt ) {
+// Process files for distribution.
-	const fs = require( "fs" );
+module.exports = async function processForDist( text, filename ) {
-	const filename = grunt.option( "filename" );
+	if ( !text ) {
-	const distFolder = grunt.option( "dist-folder" );
+		throw new Error( "text required for processForDist" );
-	const distPaths = [
+	}
-		`${ distFolder }/${ filename }`,
-		`${ distFolder }/${ filename.replace( ".js", ".min.js" ) }`,
-		`${ distFolder }/${ filename.replace( ".js", ".min.map" ) }`
-	];
 
-	// Process files for distribution
+	if ( !filename ) {
-	grunt.registerTask( "dist", function() {
+		throw new Error( "filename required for processForDist" );
-		let stored, flags, paths, nonascii;
+	}
 
-		// Check for stored destination paths
+	// Ensure files use only \n for line endings, not \r\n
-		// ( set in dist/.destination.json )
+	if ( /\x0d\x0a/.test( text ) ) {
-		stored = Object.keys( grunt.config( "dst" ) );
+		throw new Error( filename + ": Incorrect line endings (\\r\\n)" );
+	}
 
-		// Allow command line input as well
+	// Ensure only ASCII chars so script tags don't need a charset attribute
-		flags = Object.keys( this.flags );
+	if ( text.length !== Buffer.byteLength( text, "utf8" ) ) {
-
+		let message = filename + ": Non-ASCII characters detected:\n";
-		// Combine all output target paths
+		for ( let i = 0; i < text.length; i++ ) {
-		paths = [].concat( stored, flags ).filter( function( path ) {
+			const c = text.charCodeAt( i );
-			return path !== "*";
+			if ( c > 127 ) {
-		} );
+				message += "- position " + i + ": " + c + "\n";
-
+				message += "==> " + text.substring( i - 20, i + 20 );
-		// Ensure the dist files are pure ASCII
+				break;
-		nonascii = false;
-
-		distPaths.forEach( function( filename ) {
-			let i, c;
-			const text = fs.readFileSync( filename, "utf8" );
-
-			// Ensure files use only \n for line endings, not \r\n
-			if ( /\x0d\x0a/.test( text ) ) {
-				grunt.log.writeln( filename + ": Incorrect line endings (\\r\\n)" );
-				nonascii = true;
 			}
-
+		}
-			// Ensure only ASCII chars so script tags don't need a charset attribute
+		throw new Error( message );
-			if ( text.length !== Buffer.byteLength( text, "utf8" ) ) {
+	}
-				grunt.log.writeln( filename + ": Non-ASCII characters detected:" );
-				for ( i = 0; i < text.length; i++ ) {
-					c = text.charCodeAt( i );
-					if ( c > 127 ) {
-						grunt.log.writeln( "- position " + i + ": " + c );
-						grunt.log.writeln( "-- " + text.substring( i - 20, i + 20 ) );
-						break;
-					}
-				}
-				nonascii = true;
-			}
-
-			// Optionally copy dist files to other locations
-			paths.forEach( function( path ) {
-				let created;
-
-				if ( !/\/$/.test( path ) ) {
-					path += "/";
-				}
-
-				created = path + filename.replace( "dist/", "" );
-				grunt.file.write( created, text );
-				grunt.log.writeln( "File '" + created + "' created." );
-			} );
-		} );
-
-		return !nonascii;
-	} );
 };

build/tasks/lib/getTimestamp.js

@@ -0,0 +1,9 @@
+"use strict";
+
+module.exports = function getTimestamp() {
+	const now = new Date();
+	const hours = now.getHours().toString().padStart( 2, "0" );
+	const minutes = now.getMinutes().toString().padStart( 2, "0" );
+	const seconds = now.getSeconds().toString().padStart( 2, "0" );
+	return `${hours}:${minutes}:${seconds}`;
+};

build/tasks/lib/isCleanWorkingDir.js

@@ -0,0 +1,9 @@
+"use strict";
+
+const util = require( "util" );
+const exec = util.promisify( require( "child_process" ).exec );
+
+module.exports = async function isCleanWorkingDir() {
+	const { stdout } = await exec( "git status --untracked-files=no --porcelain" );
+	return !stdout.trim();
+};

build/tasks/lib/slim-exclude.js

@@ -2,9 +2,9 @@
 
 // NOTE: keep it in sync with test/data/testinit.js
 module.exports = [
-	"-ajax",
+	"ajax",
-	"-callbacks",
+	"callbacks",
-	"-deferred",
+	"deferred",
-	"-effects",
+	"effects",
-	"-queue"
+	"queue"
 ];

build/tasks/lib/spawn_test.js

@@ -1,16 +0,0 @@
-"use strict";
-
-// Run Node with provided parameters: the first one being the Grunt
-// done function and latter ones being files to be tested.
-// See the comment in ../node_smoke_tests.js for more information.
-module.exports = function spawnTest( done, command ) {
-	var spawn = require( "child_process" ).spawn;
-
-	spawn( command, {
-		stdio: "inherit",
-		shell: true
-	} )
-		.on( "close", function( code ) {
-			done( code === 0 );
-		} );
-};

build/tasks/lib/verifyNodeVersion.js

@@ -0,0 +1,12 @@
+"use strict";
+
+const { version } = require( "process" );
+const nodeV16OrNewer = !/^v1[0-5]\./.test( version );
+
+module.exports = function verifyNodeVersion() {
+	if ( !nodeV16OrNewer ) {
+		console.log( "Old Node.js detected, task skipped..." );
+		return false;
+	}
+	return true;
+};

build/tasks/minify.js

@@ -1,57 +1,67 @@
-/**
- * Minify JavaScript using SWC.
- */
-
 "use strict";
 
-module.exports = ( grunt ) => {
+const swc = require( "@swc/core" );
-	const swc = require( "@swc/core" );
+const fs = require( "fs" );
+const path = require( "path" );
+const processForDist = require( "./dist" );
+const getTimestamp = require( "./lib/getTimestamp" );
 
-	grunt.registerMultiTask(
+const rjs = /\.js$/;
-		"minify",
-		"Minify JavaScript using SWC",
-		async function() {
-			const done = this.async();
-			const options = this.options();
-			const sourceMapFilename = options.sourceMap && options.sourceMap.filename;
-			const sourceMapOverrides = options.sourceMap && options.sourceMap.overrides || {};
 
-			await Promise.all( this.files.map( async( { src, dest } ) => {
+module.exports = async function minify( { filename, dir, esm } ) {
-				if ( src.length !== 1 ) {
+	const contents = await fs.promises.readFile( path.join( dir, filename ), "utf8" );
-					grunt.fatal( "The minify task requires a single source per destination" );
+	const version = /jQuery JavaScript Library ([^\n]+)/.exec( contents )[ 1 ];
-				}
 
-				const { code, map: incompleteMap } = await swc.minify(
+	const { code, map: incompleteMap } = await swc.minify(
-					grunt.file.read( src[ 0 ] ),
+		contents,
-					{
+		{
-						...options.swc,
+			compress: {
-						inlineSourcesContent: false,
+				ecma: esm ? 2015 : 5,
-						sourceMap: sourceMapFilename ?
+				hoist_funs: false,
-							{
+				loops: false
-								filename: sourceMapFilename
+			},
-							} :
+			format: {
-							false
+				ecma: esm ? 2015 : 5,
-					}
+				asciiOnly: true,
-				);
+				comments: false,
-
+				preamble: `/*! jQuery ${version}` +
-				// Can't seem to get SWC to not use CRLF on Windows, so replace them with LF.
+					" | (c) OpenJS Foundation and other contributors" +
-				grunt.file.write( dest, code.replace( /\r\n/g, "\n" ) );
+					" | jquery.org/license */\n"
-
+			},
-				if ( sourceMapFilename ) {
+			mangle: true,
-
+			inlineSourcesContent: false,
-					// Apply map overrides if needed. See the task config description
+			sourceMap: true
-					// for more details.
-					const mapObject = {
-						...JSON.parse( incompleteMap ),
-						...sourceMapOverrides
-					};
-					const map = JSON.stringify( mapObject );
-
-					grunt.file.write( sourceMapFilename, map );
-				}
-			} ) );
-
-			done();
 		}
 	);
+
+	const minFilename = filename.replace( rjs, ".min.js" );
+	const mapFilename = filename.replace( rjs, ".min.map" );
+
+	// The map's `files` & `sources` property are set incorrectly, fix
+	// them via overrides from the task config.
+	// See https://github.com/swc-project/swc/issues/7588#issuecomment-1624345254
+	const map = JSON.stringify( {
+		...JSON.parse( incompleteMap ),
+		file: minFilename,
+		sources: [ filename ]
+	} );
+
+	await Promise.all( [
+		fs.promises.writeFile(
+			path.join( dir, minFilename ),
+			code
+		),
+		fs.promises.writeFile(
+			path.join( dir, mapFilename ),
+			map
+		)
+	] );
+
+	// Always process files for dist
+	// Doing it here avoids extra file reads
+	processForDist( contents, filename );
+	processForDist( code, minFilename );
+	processForDist( map, mapFilename );
+
+	console.log( `[${getTimestamp()}] ${minFilename} ${version} with ${mapFilename} created.` );
 };

build/tasks/node_smoke_tests.js

@@ -1,51 +1,50 @@
 "use strict";
 
-module.exports = ( grunt ) => {
+const fs = require( "fs" );
-	const fs = require( "fs" );
+const util = require( "util" );
-	const spawnTest = require( "./lib/spawn_test.js" );
+const exec = util.promisify( require( "child_process" ).exec );
-	const nodeV16OrNewer = !/^v1[0-5]\./.test( process.version );
+const verifyNodeVersion = require( "./lib/verifyNodeVersion" );
 
-	grunt.registerTask( "node_smoke_tests", function( moduleType, jQueryModuleSpecifier ) {
+const allowedModules = [ "commonjs", "module" ];
-		if (
-			( moduleType !== "commonjs" && moduleType !== "module" ) ||
-			!jQueryModuleSpecifier
-		) {
-			grunt.fatal( "Use `node_smoke_tests:commonjs:JQUERY` " +
-				"or `node_smoke_tests:module:JQUERY.\n" +
-				"JQUERY can be `jquery`, `jquery/slim` or a path to any of them." );
-		}
 
-		if ( !nodeV16OrNewer ) {
+if ( !verifyNodeVersion() ) {
-			grunt.log.writeln( "Old Node.js detected, running the task " +
+	return;
-				`"node_smoke_tests:${ moduleType }:${ jQueryModuleSpecifier }" skipped...` );
+}
-			return;
-		}
 
-		const testsDir = `./test/node_smoke_tests/${ moduleType }`;
+// Fire up all tests defined in test/node_smoke_tests/*.js in spawned sub-processes.
-		const nodeSmokeTests = [];
+// All the files under test/node_smoke_tests/*.js are supposed to exit with 0 code
+// on success or another one on failure. Spawning in sub-processes is
+// important so that the tests & the main process don't interfere with
+// each other, e.g. so that they don't share the `require` cache.
 
-		// Fire up all tests defined in test/node_smoke_tests/*.js in spawned sub-processes.
+async function runTests( sourceType, module ) {
-		// All the files under test/node_smoke_tests/*.js are supposed to exit with 0 code
+	if ( !allowedModules.includes( sourceType ) ) {
-		// on success or another one on failure. Spawning in sub-processes is
+		throw new Error(
-		// important so that the tests & the main process don't interfere with
+			`Usage: \`node_smoke_tests [${allowedModules.join( "|" )}]:JQUERY\``
-		// each other, e.g. so that they don't share the `require` cache.
+		);
+	}
+	const dir = `./test/node_smoke_tests/${sourceType}`;
+	const files = await fs.promises.readdir( dir, { withFileTypes: true } );
+	const testFiles = files.filter( ( testFilePath ) => testFilePath.isFile() );
+	await Promise.all(
+		testFiles.map( ( testFile ) =>
+			exec( `node "${dir}/${testFile.name}" "${module}"` )
+		)
+	);
+	console.log( `Node smoke tests passed for ${sourceType} "${module}".` );
+}
 
-		fs.readdirSync( testsDir )
+async function runDefaultTests() {
-			.filter( ( testFilePath ) =>
+	await Promise.all( [
-				fs.statSync( `${ testsDir }/${ testFilePath }` ).isFile() &&
+		runTests( "commonjs", "jquery" ),
-					/\.[cm]?js$/.test( testFilePath )
+		runTests( "commonjs", "jquery/slim" ),
-			)
+		runTests( "commonjs", "./dist/jquery.js" ),
-			.forEach( ( testFilePath ) => {
+		runTests( "commonjs", "./dist/jquery.slim.js" ),
-				const taskName = `node_${ testFilePath.replace( /\.[cm]?js$/, "" ) }:${ moduleType }:${ jQueryModuleSpecifier }`;
+		runTests( "module", "jquery" ),
+		runTests( "module", "jquery/slim" ),
+		runTests( "module", "./dist-module/jquery.module.js" ),
+		runTests( "module", "./dist-module/jquery.slim.module.js" )
+	] );
+}
 
-				grunt.registerTask( taskName, function() {
+runDefaultTests();
-					spawnTest( this.async(), `node "${ testsDir }/${
-						testFilePath }" ${ jQueryModuleSpecifier }` );
-				} );
-
-				nodeSmokeTests.push( taskName );
-			} );
-
-		grunt.task.run( nodeSmokeTests );
-	} );
-};

build/tasks/npmcopy.js

@@ -0,0 +1,42 @@
+"use strict";
+
+const fs = require( "fs" );
+const path = require( "path" );
+
+const projectDir = path.resolve( __dirname, "..", ".." );
+
+const files = {
+	"bootstrap/bootstrap.css": "bootstrap/dist/css/bootstrap.css",
+	"bootstrap/bootstrap.min.css": "bootstrap/dist/css/bootstrap.min.css",
+	"bootstrap/bootstrap.min.css.map": "bootstrap/dist/css/bootstrap.min.css.map",
+
+	"core-js-bundle/core-js-bundle.js": "core-js-bundle/minified.js",
+	"core-js-bundle/LICENSE": "core-js-bundle/LICENSE",
+
+	"npo/npo.js": "native-promise-only/lib/npo.src.js",
+
+	"qunit/qunit.js": "qunit/qunit/qunit.js",
+	"qunit/qunit.css": "qunit/qunit/qunit.css",
+	"qunit/LICENSE.txt": "qunit/LICENSE.txt",
+
+	"requirejs/require.js": "requirejs/require.js",
+
+	"sinon/sinon.js": "sinon/pkg/sinon.js",
+	"sinon/LICENSE.txt": "sinon/LICENSE"
+};
+
+async function npmcopy() {
+	await fs.promises.mkdir( path.resolve( projectDir, "external" ), {
+		recursive: true
+	} );
+	for ( const [ dest, source ] of Object.entries( files ) ) {
+		const from = path.resolve( projectDir, "node_modules", source );
+		const to = path.resolve( projectDir, "external", dest );
+		const toDir = path.dirname( to );
+		await fs.promises.mkdir( toDir, { recursive: true } );
+		await fs.promises.copyFile( from, to );
+		console.log( `${source} → ${dest}` );
+	}
+}
+
+npmcopy();

build/tasks/promises_aplus_tests.js

@@ -1,27 +1,32 @@
 "use strict";
 
-module.exports = grunt => {
+const { spawn } = require( "child_process" );
-	const timeout = 2000;
+const verifyNodeVersion = require( "./lib/verifyNodeVersion" );
-	const spawnTest = require( "./lib/spawn_test.js" );
+const path = require( "path" );
+const os = require( "os" );
 
-	grunt.registerTask( "promises_aplus_tests",
+if ( !verifyNodeVersion() ) {
-		[ "promises_aplus_tests:deferred", "promises_aplus_tests:when" ] );
+	return;
+}
 
-	grunt.registerTask( "promises_aplus_tests:deferred", function() {
+const command = path.resolve(
-		spawnTest( this.async(),
+	__dirname,
-			"\"" + __dirname + "/../../node_modules/.bin/promises-aplus-tests\"" +
+	`../../node_modules/.bin/promises-aplus-tests${os.platform() === "win32" ? ".cmd" : ""}`
-				" test/promises_aplus_adapters/deferred.cjs" +
+);
-				" --reporter dot" +
+const args = [ "--reporter", "dot", "--timeout", "2000" ];
-				" --timeout " + timeout
+const tests = [
+	"test/promises_aplus_adapters/deferred.cjs",
+	"test/promises_aplus_adapters/when.cjs"
+];
+
+async function runTests() {
+	tests.forEach( ( test ) => {
+		spawn(
+			command,
+			[ test ].concat( args ),
+			{ stdio: "inherit" }
 		);
 	} );
+}
 
-	grunt.registerTask( "promises_aplus_tests:when", function() {
+runTests();
-		spawnTest( this.async(),
-			"\"" + __dirname + "/../../node_modules/.bin/promises-aplus-tests\"" +
-				" test/promises_aplus_adapters/when.cjs" +
-				" --reporter dot" +
-				" --timeout " + timeout
-		);
-	} );
-};

build/tasks/qunit-fixture.js

@@ -0,0 +1,17 @@
+"use strict";
+
+const fs = require( "fs" );
+
+async function generateFixture() {
+	const fixture = await fs.promises.readFile( "./test/data/qunit-fixture.html", "utf8" );
+	await fs.promises.writeFile(
+		"./test/data/qunit-fixture.js",
+		"// Generated by build/tasks/qunit-fixture.js\n" +
+		"QUnit.config.fixture = " +
+			JSON.stringify( fixture.replace( /\r\n/g, "\n" ) ) +
+		";\n"
+	);
+	console.log( "Updated ./test/data/qunit-fixture.js" );
+}
+
+generateFixture();

build/tasks/qunit_fixture.js

@@ -1,22 +0,0 @@
-"use strict";
-
-var fs = require( "fs" );
-
-module.exports = function( grunt ) {
-	grunt.registerTask( "qunit_fixture", function() {
-		var dest = "./test/data/qunit-fixture.js";
-		fs.writeFileSync(
-			dest,
-			"// Generated by build/tasks/qunit_fixture.js\n" +
-			"QUnit.config.fixture = " +
-			JSON.stringify(
-				fs.readFileSync(
-					"./test/data/qunit-fixture.html",
-					"utf8"
-				).toString().replace( /\r\n/g, "\n" )
-			) +
-			";\n"
-		);
-		grunt.log.ok( "Updated " + dest + "." );
-	} );
-};

dist-module/.eslintrc.json

@@ -1,45 +0,0 @@
-{
-	"root": true,
-
-	"parserOptions": {
-		"ecmaVersion": 2015,
-		"sourceType": "module"
-	},
-
-	"globals": {
-		"define": false,
-		"Symbol": false
-	},
-
-	"overrides": [
-		{
-			"files": "jquery{,.slim}.module.min.js",
-
-			"parserOptions": {
-				"ecmaVersion": 2015,
-				"sourceType": "module"
-			}
-		},
-
-		{
-			"files": "jquery{,.slim}.module.js",
-			"extends": "../.eslintrc-browser.json",
-
-			"parserOptions": {
-				"ecmaVersion": 2015,
-				"sourceType": "module"
-			},
-
-			"rules": {
-
-				// That is okay for the built version
-				"no-multiple-empty-lines": "off",
-
-				// When custom compilation is used, the version string
-				// can get large. Accept that in the built version.
-				"max-len": "off",
-				"one-var": "off"
-			}
-		}
-	]
-}

dist/.eslintrc.json

@@ -1,41 +0,0 @@
-{
-	"root": true,
-
-	"parserOptions": {
-		"ecmaVersion": 5,
-		"sourceType": "script"
-	},
-
-	"globals": {
-		"define": false,
-		"module": true,
-		"Symbol": false
-	},
-
-	"overrides": [
-		{
-			"files": "jquery{,.slim}.min.js",
-
-			"parserOptions": {
-				"ecmaVersion": 5,
-				"sourceType": "script"
-			}
-		},
-
-		{
-			"files": "jquery{,.slim}.js",
-			"extends": "../.eslintrc-browser.json",
-
-			"rules": {
-
-				// That is okay for the built version
-				"no-multiple-empty-lines": "off",
-
-				// When custom compilation is used, the version string
-				// can get large. Accept that in the built version.
-				"max-len": "off",
-				"one-var": "off"
-			}
-		}
-	]
-}

eslint.config.js

@@ -0,0 +1,305 @@
+import jqueryConfig from "eslint-config-jquery";
+import importPlugin from "eslint-plugin-import";
+import globals from "globals";
+
+export default [
+	{
+
+		// Only global ignores will bypass the parser
+		// and avoid JS parsing errors
+		// See https://github.com/eslint/eslint/discussions/17412
+		ignores: [
+			"external",
+			"test/data/json_obj.js"
+		]
+	},
+
+	{
+		files: [
+			"eslint.config.js",
+			"Gruntfile.cjs",
+			"test/node_smoke_tests/commonjs/**",
+			"test/node_smoke_tests/module/**",
+			"test/promises_aplus_adapters/**",
+			"test/middleware-mockserver.cjs"
+		],
+		languageOptions: {
+			globals: {
+				...globals.node
+			}
+		},
+		rules: {
+			...jqueryConfig.rules,
+			strict: [ "error", "global" ]
+		}
+	},
+
+	// Source
+	{
+		files: [ "src/**" ],
+		plugins: {
+			import: importPlugin
+		},
+		languageOptions: {
+
+			// The browser env is not enabled on purpose so that code takes
+			// all browser-only globals from window instead of assuming
+			// they're available as globals. This makes it possible to use
+			// jQuery with tools like jsdom which provide a custom window
+			// implementation.
+			globals: {
+				window: false
+			}
+		},
+		rules: {
+			...jqueryConfig.rules,
+			"import/extensions": [ "error", "always" ],
+			"import/no-cycle": "error",
+
+			// TODO: Enable this rule when eslint-plugin-import supports
+			// it when using flat config.
+			// See https://github.com/import-js/eslint-plugin-import/issues/2556
+
+			// "import/no-unused-modules": [
+			// 	"error",
+			// 	{
+			// 		unusedExports: true,
+
+			// 		// When run via WebStorm, the root path against which these paths
+			// 		// are resolved is the path where this ESLint config file lies,
+			// 		// i.e. `src`. When run via the command line, it's usually the root
+			// 		// folder of the jQuery repository. This pattern intends to catch both.
+			// 		// Note that we cannot specify two patterns here:
+			// 		//     [ "src/*.js", "*.js" ]
+			// 		// as they're analyzed individually and the rule crashes if a pattern
+			// 		// cannot be matched.
+			// 		ignoreExports: [ "{src/,}*.js" ]
+			// 	}
+			// ],
+			indent: [
+				"error",
+				"tab",
+				{
+					outerIIFEBody: 0
+				}
+			],
+			"one-var": [ "error", { var: "always" } ],
+			strict: [ "error", "function" ]
+		}
+	},
+
+	{
+		files: [ "src/wrapper.js" ],
+		languageOptions: {
+			sourceType: "script",
+			globals: {
+				jQuery: false,
+				module: true
+			}
+		},
+		rules: {
+			"no-unused-vars": "off",
+			indent: [
+				"error",
+				"tab",
+				{
+
+					// This makes it so code within the wrapper is not indented.
+					ignoredNodes: [
+						"Program > ExpressionStatement > CallExpression > :last-child > *"
+					]
+				}
+			]
+		}
+	},
+
+	{
+		files: [ "src/wrapper-esm.js" ],
+		languageOptions: {
+			globals: {
+				jQuery: false
+			}
+		},
+		rules: {
+			"no-unused-vars": "off",
+			indent: [
+				"error",
+				"tab",
+				{
+
+					// This makes it so code within the wrapper is not indented.
+					ignoredNodes: [
+						"Program > FunctionDeclaration > *"
+					]
+				}
+			]
+		}
+	},
+
+	{
+		files: [ "src/exports/amd.js" ],
+		languageOptions: {
+			globals: {
+				define: false
+			}
+		}
+	},
+
+	// Tests
+	{
+		files: [
+			"test/**"
+		],
+		ignores: [
+			"test/data/jquery-1.9.1.js",
+			"test/data/badcall.js",
+			"test/data/badjson.js",
+			"test/data/support/csp.js",
+			"test/data/support/getComputedSupport.js",
+			"test/data/core/jquery-iterability-transpiled.js"
+		],
+		languageOptions: {
+			globals: {
+				...globals.browser,
+				require: false,
+				Promise: false,
+				Symbol: false,
+				trustedTypes: false,
+				QUnit: false,
+				ajaxTest: false,
+				testIframe: false,
+				createDashboardXML: false,
+				createWithFriesXML: false,
+				createXMLFragment: false,
+				includesModule: false,
+				moduleTeardown: false,
+				url: false,
+				q: false,
+				jQuery: true,
+				sinon: true,
+				amdDefined: true,
+				fireNative: true,
+				Globals: true,
+				hasPHP: true,
+				isLocal: true,
+				supportjQuery: true,
+				originaljQuery: true,
+				$: true,
+				original$: true,
+				baseURL: true,
+				externalHost: true
+			}
+		},
+		rules: {
+			...jqueryConfig.rules,
+			strict: [ "error", "function" ],
+
+			// See https://github.com/eslint/eslint/issues/2342
+			"no-unused-vars": "off",
+
+			// Too many errors
+			"max-len": "off",
+			camelcase: "off",
+			"one-var": "off"
+		}
+	},
+
+	{
+		files: [
+			"test/data/testrunner.js",
+			"test/data/core/jquery-iterability-transpiled-es6.js"
+		],
+		languageOptions: {
+			sourceType: "script"
+		}
+	},
+
+	{
+		files: [
+			"test/unit/deferred.js"
+		],
+		rules: {
+
+			// Deferred tests set strict mode for certain tests
+			strict: "off"
+		}
+	},
+
+	{
+		files: [
+			"test/node_smoke_tests/commonjs/**",
+			"test/node_smoke_tests/module/**",
+			"test/promises_aplus_adapters/**",
+			"test/middleware-mockserver.cjs"
+		],
+		languageOptions: {
+			globals: {
+				...globals.node,
+				...globals.es2021
+			}
+		},
+		rules: {
+			strict: [ "error", "global" ]
+		}
+	},
+
+	{
+		files: [
+			"build/**",
+			"test/data/testinit.js",
+			"test/data/testinit-jsdom.js"
+		],
+		languageOptions: {
+			globals: {
+				...globals.node,
+				...globals.es2021
+			}
+		},
+		rules: {
+			...jqueryConfig.rules,
+			strict: [ "error", "global" ]
+		}
+	},
+
+	{
+		files: [
+			"build/**/*.js",
+			"test/data/testinit.js",
+			"test/data/testinit-jsdom.js"
+		],
+		languageOptions: {
+			sourceType: "commonjs"
+		}
+	},
+
+	{
+		files: [
+			"dist/jquery.js",
+			"dist/jquery.slim.js",
+			"dist-module/jquery.module.js",
+			"dist-module/jquery.slim.module.js"
+		],
+
+		languageOptions: {
+			globals: {
+				...globals.browser,
+				...globals.es2021,
+				define: false,
+				module: false,
+				Symbol: false
+			}
+		},
+
+		rules: {
+			...jqueryConfig.rules,
+
+			// That is okay for the built version
+			"no-multiple-empty-lines": "off",
+
+			// When custom compilation is used, the version string
+			// can get large. Accept that in the built version.
+			"max-len": "off",
+			"one-var": "off"
+		}
+	}
+];

package.json

@@ -30,6 +30,31 @@
     "./src/*.js": "./src/*.js"
   },
   "main": "dist/jquery.js",
+  "scripts": {
+    "babel:tests": "babel test/data/core/jquery-iterability-transpiled-es6.js --out-file test/data/core/jquery-iterability-transpiled.js",
+    "build": "node ./build/command.js",
+    "build:all": "node -e \"require('./build/tasks/build.js').buildDefaultFiles()\"",
+    "build:main": "node -e \"require('./build/tasks/build.js').build()\"",
+    "jenkins": "npm run test:browserless",
+    "lint:dev": "eslint --cache .",
+    "lint:json": "jsonlint --quiet package.json",
+    "lint": "concurrently -r \"npm:lint:dev\" \"npm:lint:json\"",
+    "npmcopy": "node build/tasks/npmcopy.js",
+    "prepare": "husky install",
+    "pretest": "npm run qunit-fixture && npm run babel:tests && npm run npmcopy",
+    "qunit-fixture": "node build/tasks/qunit-fixture.js",
+    "start": "node -e \"require('./build/tasks/build.js').buildDefaultFiles({ watch: true })\"",
+    "test:browserless": "npm run test:node_smoke_tests && npm run test:promises_aplus && npm run test:jsdom",
+    "test:browser": "npm run build:all && grunt karma:main",
+    "test:esmodules": "npm run build:main && grunt karma:esmodules",
+    "test:jsdom": "npm run build:main && grunt test:jsdom",
+    "test:no-deprecated": "npm run build -- -e deprecated && grunt karma:main",
+    "test:selector-native": "npm run build -- -e selector && grunt karma:main",
+    "test:slim": "npm run build -- --slim && grunt karma:main",
+    "test:node_smoke_tests": "npm run build:all && node build/tasks/node_smoke_tests.js",
+    "test:promises_aplus": "npm run build:main && node build/tasks/promises_aplus_tests.js",
+    "test": "npm run build:all && npm run lint && npm run test:browserless && npm run test:browser && npm run test:esmodules && npm run test:slim && npm run test:no-deprecated && npm run test:selector-native"
+  },
   "homepage": "https://jquery.com",
   "author": {
     "name": "OpenJS Foundation and other contributors",
@@ -50,28 +75,27 @@
   },
   "license": "MIT",
   "devDependencies": {
+    "@babel/cli": "7.22.9",
     "@babel/core": "7.10.5",
     "@babel/plugin-transform-for-of": "7.10.4",
-    "@swc/core": "1.3.66",
+    "@prantlf/jsonlint": "14.0.3",
+    "@swc/core": "1.3.78",
     "bootstrap": "5.3.0",
+    "chalk": "5.3.0",
     "colors": "1.4.0",
     "commitplease": "3.2.0",
+    "concurrently": "8.2.0",
     "core-js-bundle": "3.6.5",
-    "eslint-config-jquery": "3.0.0",
+    "eslint": "8.44.0",
-    "eslint-plugin-import": "2.25.2",
+    "eslint-config-jquery": "3.0.1",
+    "eslint-plugin-import": "2.27.5",
+    "express": "4.18.2",
+    "globals": "13.20.0",
     "grunt": "1.5.3",
-    "grunt-babel": "8.0.0",
     "grunt-cli": "1.4.3",
-    "grunt-compare-size": "0.4.2",
-    "grunt-contrib-watch": "1.1.0",
-    "grunt-eslint": "24.0.0",
     "grunt-git-authors": "3.2.0",
-    "grunt-jsonlint": "2.1.2",
     "grunt-karma": "4.0.2",
-    "grunt-newer": "1.3.0",
+    "husky": "8.0.3",
-    "grunt-npmcopy": "0.2.0",
-    "gzip-js": "0.3.2",
-    "husky": "4.2.5",
     "jsdom": "19.0.0",
     "karma": "6.4.1",
     "karma-browserstack-launcher": "1.6.0",
@@ -94,25 +118,8 @@
     "rollup": "2.21.0",
     "sinon": "7.3.1",
     "strip-json-comments": "3.1.1",
-    "testswarm": "1.1.2"
+    "testswarm": "1.1.2",
-  },
+    "yargs": "17.7.2"
-  "scripts": {
-    "build": "npm install && npm run build-all-variants",
-    "build-all-variants": "grunt custom:slim --esm --filename=jquery.slim.module.js && grunt custom --esm --filename=jquery.module.js && grunt custom:slim --filename=jquery.slim.js && grunt custom",
-    "start": "grunt watch",
-    "test:browserless": "grunt && npm run test:node_smoke_tests && grunt test:slow",
-    "test:browser": "grunt && grunt karma:main",
-    "test:esmodules": "grunt && grunt karma:esmodules",
-    "test:no-deprecated": "grunt test:prepare && grunt custom:-deprecated && grunt karma:main",
-    "test:selector-native": "grunt test:prepare && grunt custom:-selector && grunt karma:main",
-    "test:slim": "grunt test:prepare && grunt custom:slim && grunt karma:main",
-    "test:node_smoke_tests:full-module": "grunt node_smoke_tests:module:./dist-module/jquery.module.js && grunt node_smoke_tests:module:jquery",
-    "test:node_smoke_tests:full-commonjs": "grunt node_smoke_tests:commonjs:./dist/jquery.js && grunt node_smoke_tests:commonjs:jquery",
-    "test:node_smoke_tests:slim-module": "grunt node_smoke_tests:module:./dist-module/jquery.slim.module.js && grunt node_smoke_tests:module:jquery/slim",
-    "test:node_smoke_tests:slim-commonjs": "grunt node_smoke_tests:commonjs:./dist/jquery.slim.js && grunt node_smoke_tests:commonjs:jquery/slim",
-    "test:node_smoke_tests": "npm run test:node_smoke_tests:full-module && npm run test:node_smoke_tests:slim-module && npm run test:node_smoke_tests:full-commonjs && npm run test:node_smoke_tests:slim-commonjs",
-    "test": "npm run test:browserless && npm run test:slim && npm run test:no-deprecated && npm run test:selector-native && grunt && grunt test:slow && grunt karma:main && grunt karma:esmodules",
-    "jenkins": "npm run test:browserless"
   },
   "commitplease": {
     "nohook": true,
@@ -143,11 +150,5 @@
     ],
     "markerPattern": "^((clos|fix|resolv)(e[sd]|ing))|^(refs?)",
     "ticketPattern": "^((Closes|Fixes) ([a-zA-Z]{2,}-)[0-9]+)|^(Refs? [^#])"
-  },
-  "husky": {
-    "hooks": {
-      "commit-msg": "commitplease .git/COMMIT_EDITMSG",
-      "pre-commit": "grunt lint:newer qunit_fixture"
-    }
   }
 }

src/.eslintrc.json

@@ -1,102 +0,0 @@
-{
-	"root": true,
-
-	"extends": "../.eslintrc-browser.json",
-
-	"parserOptions": {
-		"ecmaVersion": 2015,
-		"sourceType": "module"
-	},
-
-	"plugins": [ "import" ],
-
-	"rules": {
-		"import/extensions": [ "error", "always" ],
-		"import/no-cycle": "error",
-		"import/no-unused-modules": [ "error", {
-			"unusedExports": true,
-
-			// When run via WebStorm, the root path against which these paths
-			// are resolved is the path where this ESLint config file lies,
-			// i.e. `src`. When run via the command line, it's usually the root
-			// folder of the jQuery repository. This pattern intends to catch both.
-			// Note that we cannot specify two patterns here:
-			//     [ "src/*.js", "*.js" ]
-			// as they're analyzed individually and the rule crashes if a pattern
-			// cannot be matched.
-			"ignoreExports": [ "{src/,}*.js" ]
-		} ],
-		"indent": [ "error", "tab", {
-			"outerIIFEBody": 0
-		} ]
-	},
-
-	"overrides": [
-		{
-			"files": "wrapper.js",
-			"parserOptions": {
-				"ecmaVersion": 5,
-				"sourceType": "script"
-			},
-			"rules": {
-				"no-unused-vars": "off",
-				"indent": [ "error", "tab", {
-
-					// Unlike other codes, "wrapper.js" is implemented in UMD.
-					// So it required a specific exception for jQuery's UMD
-					// Code Style. This makes that indentation check is not
-					// performed for 1 depth of outer FunctionExpressions
-					"ignoredNodes": [
-						"Program > ExpressionStatement > CallExpression > :last-child > *"
-					]
-				} ]
-			},
-			"globals": {
-				"jQuery": false,
-				"module": true
-			}
-		},
-
-		{
-			"files": "wrapper-esm.js",
-			"parserOptions": {
-				"ecmaVersion": 2015,
-				"sourceType": "module"
-			},
-			"globals": {
-				"jQuery": false
-			},
-			"rules": {
-				"no-unused-vars": "off",
-				"indent": [ "error", "tab", {
-					// Unlike other codes, "wrapper.js" is implemented in UMD.
-					// So it required a specific exception for jQuery's UMD
-					// Code Style. This makes that indentation check is not
-					// performed for 1 depth of outer FunctionExpressions
-					"ignoredNodes": [
-						"Program > FunctionDeclaration > *"
-					]
-				} ],
-				"import/no-unused-modules": "off"
-			}
-		},
-
-		{
-			"files": "exports/amd.js",
-			"globals": {
-				"define": false
-			}
-		},
-
-		{
-			"files": "core.js",
-			"globals": {
-
-				// Defining Symbol globally would create a danger of using
-				// it unguarded in another place, it seems safer to define
-				// it only for this module.
-				"Symbol": false
-			}
-		}
-	]
-}

test/.eslintrc.json

@@ -1,89 +0,0 @@
-{
-	"root": true,
-
-	"extends": "../.eslintrc-browser.json",
-
-	"env": {
-
-		// In source the browser env is not enabled but unit tests rely on them
-		// too much and we don't run them in non-browser environments anyway.
-		"browser": true
-	},
-
-	"globals": {
-		"require": false,
-		"Promise": false,
-		"Symbol": false,
-		"trustedTypes": false,
-		"QUnit": false,
-		"ajaxTest": false,
-		"testIframe": false,
-		"createDashboardXML": false,
-		"createWithFriesXML": false,
-		"createXMLFragment": false,
-		"includesModule": false,
-		"moduleTeardown": false,
-		"url": false,
-		"q": false,
-		"jQuery": true,
-		"sinon": true,
-		"amdDefined": true,
-		"fireNative": true,
-		"Globals": true,
-		"hasPHP": true,
-		"isLocal": true,
-		"supportjQuery": true,
-		"originaljQuery": true,
-		"$": true,
-		"original$": true,
-		"baseURL": true,
-		"externalHost": true
-	},
-
-	"rules": {
-		// See https://github.com/eslint/eslint/issues/2342
-		"no-unused-vars": "off",
-
-		// Too many errors
-		"max-len": "off",
-		"brace-style": "off",
-		"key-spacing": "off",
-		"camelcase": "off",
-		"one-var": "off",
-		"strict": "off",
-
-		// Not really too many - waiting for autofix features for these rules
-		"lines-around-comment": "off",
-		"dot-notation": "off"
-	},
-
-	"overrides": [
-		{
-			"files": [
-				"middleware-mockserver.js"
-			],
-
-			"extends": "../.eslintrc-node.json"
-		},
-
-		{
-			"files": [
-				"data/core/jquery-iterability-transpiled-es6.js",
-				"data/testinit-jsdom.js"
-			],
-			"parserOptions": {
-				"ecmaVersion": 2015
-			}
-		},
-
-		{
-			"files": [
-				"jquery.js",
-				"data/testinit.js"
-			],
-			"parserOptions": {
-				"ecmaVersion": 2020
-			}
-		}
-	]
-}

test/data/core/.babelrc.json

@@ -0,0 +1,5 @@
+{
+	"plugins": ["@babel/transform-for-of"],
+	"retainLines": true,
+	"sourceMaps": "inline"
+}

test/data/support/bootstrap.html

@@ -5,16 +5,16 @@
 	<link rel="stylesheet" href="../../../external/bootstrap/bootstrap.min.css" class="stylesheet">
 </head>
 <body>
-<div>
+	<div>
-	<script src="../../jquery.js"></script>
+		<script src="../../jquery.js"></script>
-	<script src="../iframeTest.js"></script>
+		<script src="../iframeTest.js"></script>
-	<script src="getComputedSupport.js"></script>
+		<script src="getComputedSupport.js"></script>
-</div>
+	</div>
-<script>
+	<script>
-	startIframeTest(
+		startIframeTest(
-		getComputedStyle( document.body ),
+			getComputedStyle( document.body ),
-		getComputedSupport( jQuery.support )
+			getComputedSupport( jQuery.support )
-	);
+		);
-</script>
+	</script>
 </body>
 </html>

test/data/testinit-jsdom.js

@@ -37,10 +37,10 @@ window.original$ = this.$ = "replaced";
  * @example url("mock.php?foo=bar")
  * @result "data/mock.php?foo=bar&10538358345554"
  */
-function url( value ) {
+this.url = function( value ) {
 	return baseURL + value + ( /\?/.test( value ) ? "&" : "?" ) +
 		new Date().getTime() + "" + parseInt( Math.random() * 100000, 10 );
-}
+};
 
 // We only run basic tests in jsdom so we don't need to repeat the logic
 // from the regular testinit.js

test/data/testinit.js

@@ -1,5 +1,4 @@
 /* eslint no-multi-str: "off" */
-
 "use strict";
 
 var FILEPATH = "/test/data/testinit.js",
@@ -16,18 +15,17 @@ var FILEPATH = "/test/data/testinit.js",
 	baseURL = parentUrl + "test/data/",
 	supportjQuery = this.jQuery,
 
-	// see RFC 2606
-	externalHost = "example.com",
-
 	// NOTE: keep it in sync with build/tasks/lib/slim-build-flags.js
-	slimBuildFlags = [
+	excludedFromSlim = [
-		"-ajax",
+		"ajax",
-		"-callbacks",
+		"callbacks",
-		"-deferred",
+		"deferred",
-		"-effects",
+		"effects",
-		"-queue"
+		"queue"
 	];
 
+// see RFC 2606
+this.externalHost = "example.com";
 this.hasPHP = true;
 this.isLocal = window.location.protocol === "file:";
 
@@ -241,7 +239,7 @@ this.ajaxTest = function( title, expect, options, wrapper ) {
 				completed = true;
 				delete ajaxTest.abort;
 				assert.ok( false, "aborted " + reason );
-				jQuery.each( requests, function( i, request ) {
+				jQuery.each( requests, function( _i, request ) {
 					request.abort();
 				} );
 			}
@@ -319,16 +317,16 @@ this.includesModule = function( moduleName ) {
 
 	var excludedModulesPart, excludedModules;
 
-	// A short-cut for the slim build, e.g. "4.0.0-pre slim"
+	// A short-cut for the slim build, e.g. "4.0.0-pre+slim"
-	if ( jQuery.fn.jquery.indexOf( " slim" ) > -1 ) {
+	if ( jQuery.fn.jquery.indexOf( "+slim" ) > -1 ) {
 
 		// The module is included if it does NOT exist on the list
 		// of modules excluded in the slim build
-		return slimBuildFlags.indexOf( "-" + moduleName ) === -1;
+		return excludedFromSlim.indexOf( moduleName ) === -1;
 	}
 
-	// example version for `grunt custom:-deprecated`:
+	// example version for `npm run build -- -e deprecated`:
-	// "4.0.0-pre -deprecated,-deprecated/ajax-event-alias,-deprecated/event"
+	// "v4.0.0-pre+14dc9347 -deprecated,-deprecated/ajax-event-alias,-deprecated/event"
 	excludedModulesPart = jQuery.fn.jquery
 
 		// Take the flags out of the version string.
@@ -393,6 +391,7 @@ this.loadTests = function() {
 
 		var i = 0,
 			tests = [
+
 				// A special module with basic tests, meant for not fully
 				// supported environments like jsdom. We run it everywhere,
 				// though, to make sure tests are not broken.

test/data/testrunner.js

@@ -1,5 +1,4 @@
 ( function() {
-
 "use strict";
 
 // Store the old count so that we only assert on tests that have actually leaked,

test/middleware-mockserver.cjs

@@ -67,16 +67,25 @@ const mocks = {
 		resp.end( "<root><element /></root>" );
 	},
 	script: function( req, resp ) {
+		const headers = {};
 		if ( req.query.header === "ecma" ) {
-			resp.writeHead( 200, { "content-type": "application/ecmascript" } );
+			headers[ "content-type" ] = "application/ecmascript";
 		} else if ( "header" in req.query ) {
-			resp.writeHead( 200, { "content-type": "text/javascript" } );
+			headers[ "content-type" ] = "text/javascript";
 		} else {
-			resp.writeHead( 200, { "content-type": "text/html" } );
+			headers[ "content-type" ] = "text/html";
 		}
 
 		if ( req.query.cors ) {
-			resp.writeHead( 200, { "access-control-allow-origin": "*" } );
+			headers[ "access-control-allow-origin" ] = "*";
+		}
+
+		if ( resp.set ) {
+			resp.set( headers );
+		} else {
+			for ( const key in headers ) {
+				resp.writeHead( 200, { [ key ]: headers[ key ] } );
+			}
 		}
 
 		if ( req.query.callback ) {
@@ -165,14 +174,25 @@ const mocks = {
 		}
 	},
 	headers: function( req, resp ) {
-		resp.writeHead( 200, {
+		const headers = {
 			"Sample-Header": "Hello World",
 			"Empty-Header": "",
 			"Sample-Header2": "Hello World 2",
 			"List-Header": "Item 1",
 			"list-header": "Item 2",
 			"constructor": "prototype collision (constructor)"
-		} );
+		};
+
+		// Use resp.append in express to
+		// avoid overwriting List-Header
+		if ( resp.append ) {
+
+			for ( const key in headers ) {
+				resp.append( key, headers[ key ] );
+			}
+		} else {
+			resp.writeHead( 200, headers );
+		}
 		req.query.keys.split( "|" ).forEach( function( key ) {
 			if ( key.toLowerCase() in req.headers ) {
 				resp.write( `${ key }: ${ req.headers[ key.toLowerCase() ] }\n` );
@@ -354,7 +374,7 @@ function MockserverMiddlewareFactory() {
 			parsed: parsed
 		} );
 
-		if ( /^test\/data\/mock.php\//.test( path ) ) {
+		if ( /^\/?test\/data\/mock.php\/?/.test( path ) ) {
 
 			// Support REST-like Apache PathInfo
 			path = "test\/data\/mock.php";
@@ -365,6 +385,7 @@ function MockserverMiddlewareFactory() {
 			return;
 		}
 
+		// console.log( "Mock handling", req.method, parsed.href );
 		handlers[ path ]( subReq, resp, next );
 	};
 }

test/node_smoke_tests/commonjs/.eslintrc.json

@@ -1,13 +0,0 @@
-{
-	"root": true,
-
-	"extends": "../../../.eslintrc-node.json",
-
-	"parserOptions": {
-		"ecmaVersion": 2015,
-		"sourceType": "script"
-	},
-	"env": {
-		"es2022": true
-	}
-}

test/node_smoke_tests/module/.eslintrc.json

@@ -1,13 +0,0 @@
-{
-	"root": true,
-
-	"extends": "../../../.eslintrc-node.json",
-
-	"parserOptions": {
-		"ecmaVersion": 2022,
-		"sourceType": "module"
-	},
-	"env": {
-		"es2022": true
-	}
-}

test/node_smoke_tests/module/lib/jquery-module-specifier.js

@@ -5,6 +5,11 @@ const dirname = path.dirname( fileURLToPath( import.meta.url ) );
 
 const ROOT_DIR = path.resolve( dirname, "..", "..", "..", ".." );
 
+// import does not work with Windows-style paths
+function ensureUnixPath( path ) {
+	return path.replace( /^[a-z]:/i, "" ).replace( /\\+/g, "/" );
+}
+
 // If `jQueryModuleSpecifier` is a real relative path, make it absolute
 // to make sure it resolves to the same file inside utils from
 // a subdirectory. Otherwise, leave it as-is as we may be testing `exports`
@@ -16,6 +21,6 @@ export const getJQueryModuleSpecifier = () => {
 	}
 
 	return jQueryModuleInputSpecifier.startsWith( "." ) ?
-		path.resolve( ROOT_DIR, jQueryModuleInputSpecifier ) :
+		ensureUnixPath( path.resolve( ROOT_DIR, jQueryModuleInputSpecifier ) ) :
 		jQueryModuleInputSpecifier;
 };

test/promises_aplus_adapters/.eslintrc.json

@@ -1,5 +0,0 @@
-{
-	"root": true,
-
-	"extends": "../../.eslintrc-node.json"
-}

test/server.js

@@ -0,0 +1,21 @@
+import express from "express";
+import mockServer from "./middleware-mockserver.cjs";
+import fs from "fs";
+
+const nameHTML = fs.readFileSync( "./test/data/name.html", "utf8" );
+const app = express();
+
+app.use( mockServer() );
+
+app.post( "/test/data/name.html", function( _req, res ) {
+	res.send( nameHTML );
+} );
+
+app.use( "/dist", express.static( "dist" ) );
+app.use( "/src", express.static( "src" ) );
+app.use( "/test", express.static( "test" ) );
+app.use( "/external", express.static( "external" ) );
+
+app.listen( 3000, function() {
+  console.log( "Server is running on port 3000" );
+} );

test/unit/ajax.js

@@ -455,6 +455,7 @@ QUnit.module( "ajax", {
 				},
 				cache: false,
 				beforeSend: function( xhr, settings ) {
+
 					// Clear the cache-buster param value
 					var url = settings.url.replace( /_=[^&#]+/, "_=" );
 					assert.equal( url, baseURL + "name.html?abc&devo=hat&_=#brownies",
@@ -684,7 +685,7 @@ QUnit.module( "ajax", {
 			url: url( "404.txt" ),
 			beforeSend: nocallback( "beforeSend" ),
 			error: nocallback( "error" ),
-			complete:  nocallback( "complete" )
+			complete: nocallback( "complete" )
 		};
 	} );
 
@@ -873,8 +874,8 @@ QUnit.module( "ajax", {
 			success: function( data ) {
 				assert.ok( data.match( /^html text/ ), "Check content for datatype html" );
 				jQuery( "#ap" ).html( data );
-				assert.strictEqual( window[ "testFoo" ], "foo", "Check if script was evaluated for datatype html" );
+				assert.strictEqual( window.testFoo, "foo", "Check if script was evaluated for datatype html" );
-				assert.strictEqual( window[ "testBar" ], "bar", "Check if script src was evaluated for datatype html" );
+				assert.strictEqual( window.testBar, "bar", "Check if script src was evaluated for datatype html" );
 			}
 		};
 	} );
@@ -884,6 +885,7 @@ QUnit.module( "ajax", {
 		return {
 			dataType: "jsonp",
 			url: url( "mock.php?action=errorWithScript" ),
+
 			// error is the significant assertion
 			error: function( xhr ) {
 				var expected = { "status": 404, "msg": "Not Found" };
@@ -912,6 +914,7 @@ QUnit.module( "ajax", {
 				complete: function() {
 					jQuery.globalEval = globalEval;
 				},
+
 				// error is the significant assertion
 				error: function( xhr ) {
 					assert.strictEqual( xhr.status, 404, testMsg );
@@ -1171,8 +1174,8 @@ QUnit.module( "ajax", {
 					Globals.register( "functionToCleanUp" );
 					Globals.register( "XXX" );
 					Globals.register( "jsonpResults" );
-					window[ "jsonpResults" ] = function( data ) {
+					window.jsonpResults = function( data ) {
-						assert.ok( data[ "data" ], "JSON results returned (GET, custom callback function)" );
+						assert.ok( data.data, "JSON results returned (GET, custom callback function)" );
 					};
 				},
 				requests: [ {
@@ -1181,7 +1184,7 @@ QUnit.module( "ajax", {
 					crossDomain: crossDomain,
 					jsonp: "callback",
 					success: function( data ) {
-						assert.ok( data[ "data" ], "JSON results returned (GET, data obj callback)" );
+						assert.ok( data.data, "JSON results returned (GET, data obj callback)" );
 					}
 				}, {
 					url: baseURL + "mock.php?action=jsonp",
@@ -1190,7 +1193,7 @@ QUnit.module( "ajax", {
 					jsonpCallback: "jsonpResults",
 					success: function( data ) {
 						assert.strictEqual(
-							typeof window[ "jsonpResults" ],
+							typeof window.jsonpResults,
 							"function",
 							"should not rewrite original function"
 						);
@@ -1202,8 +1205,8 @@ QUnit.module( "ajax", {
 					crossDomain: crossDomain,
 					jsonpCallback: "functionToCleanUp",
 					success: function( data ) {
-						assert.ok( data[ "data" ], "JSON results returned (GET, custom callback name to be cleaned up)" );
+						assert.ok( data.data, "JSON results returned (GET, custom callback name to be cleaned up)" );
-						assert.strictEqual( window[ "functionToCleanUp" ], true, "Callback was removed (GET, custom callback name to be cleaned up)" );
+						assert.strictEqual( window.functionToCleanUp, true, "Callback was removed (GET, custom callback name to be cleaned up)" );
 						var xhr;
 						jQuery.ajax( {
 							url: baseURL + "mock.php?action=jsonp",
@@ -1217,7 +1220,7 @@ QUnit.module( "ajax", {
 						} );
 						xhr.fail( function() {
 							assert.ok( true, "Ajax error JSON (GET, custom callback name to be cleaned up)" );
-							assert.strictEqual( window[ "functionToCleanUp" ], true, "Callback was removed after early abort (GET, custom callback name to be cleaned up)" );
+							assert.strictEqual( window.functionToCleanUp, true, "Callback was removed after early abort (GET, custom callback name to be cleaned up)" );
 						} );
 					}
 				}, {
@@ -1230,7 +1233,7 @@ QUnit.module( "ajax", {
 						assert.ok( /action=jsonp&callback=XXX&_=\d+$/.test( this.url ), "The URL wasn't messed with (GET, custom callback name with no url manipulation)" );
 					},
 					success: function( data ) {
-						assert.ok( data[ "data" ], "JSON results returned (GET, custom callback name with no url manipulation)" );
+						assert.ok( data.data, "JSON results returned (GET, custom callback name with no url manipulation)" );
 					}
 				} ]
 			};
@@ -1267,7 +1270,7 @@ QUnit.module( "ajax", {
 					dataType: "jsonp",
 					crossDomain: crossDomain,
 					success: function( data ) {
-						assert.ok( data[ "data" ], "JSON results returned (POST, no callback)" );
+						assert.ok( data.data, "JSON results returned (POST, no callback)" );
 					}
 				},
 				{
@@ -1277,7 +1280,7 @@ QUnit.module( "ajax", {
 					dataType: "jsonp",
 					crossDomain: crossDomain,
 					success: function( data ) {
-						assert.ok( data[ "data" ], "JSON results returned (POST, data callback)" );
+						assert.ok( data.data, "JSON results returned (POST, data callback)" );
 					}
 				},
 				{
@@ -1287,7 +1290,7 @@ QUnit.module( "ajax", {
 					dataType: "jsonp",
 					crossDomain: crossDomain,
 					success: function( data ) {
-						assert.ok( data[ "data" ], "JSON results returned (POST, data obj callback)" );
+						assert.ok( data.data, "JSON results returned (POST, data obj callback)" );
 					}
 				}
 			];
@@ -1461,7 +1464,7 @@ QUnit.module( "ajax", {
 			url: url( "mock.php?action=testbar" ),
 			dataType: "script",
 			success: function() {
-				assert.strictEqual( window[ "testBar" ], "bar", "Script results returned (GET, no callback)" );
+				assert.strictEqual( window.testBar, "bar", "Script results returned (GET, no callback)" );
 			}
 		};
 	} );
@@ -1478,7 +1481,7 @@ QUnit.module( "ajax", {
 			type: "POST",
 			dataType: "script",
 			success: function( data, status ) {
-				assert.strictEqual( window[ "testBar" ], "bar", "Script results returned (POST, no callback)" );
+				assert.strictEqual( window.testBar, "bar", "Script results returned (POST, no callback)" );
 				assert.strictEqual( status, "success", "Script results returned (POST, no callback)" );
 			}
 		};
@@ -1492,7 +1495,7 @@ QUnit.module( "ajax", {
 			url: url( "mock.php?action=testbar" ),
 			dataType: "script",
 			success: function() {
-				assert.strictEqual( window[ "testBar" ], "bar", "Script results returned (GET, no callback)" );
+				assert.strictEqual( window.testBar, "bar", "Script results returned (GET, no callback)" );
 			}
 		};
 	} );
@@ -1518,10 +1521,10 @@ QUnit.module( "ajax", {
 				},
 				success: function( json ) {
 					assert.ok( json.length >= 2, "Check length" );
-					assert.strictEqual( json[ 0 ][ "name" ], "John", "Check JSON: first, name" );
+					assert.strictEqual( json[ 0 ].name, "John", "Check JSON: first, name" );
-					assert.strictEqual( json[ 0 ][ "age" ], 21, "Check JSON: first, age" );
+					assert.strictEqual( json[ 0 ].age, 21, "Check JSON: first, age" );
-					assert.strictEqual( json[ 1 ][ "name" ], "Peter", "Check JSON: second, name" );
+					assert.strictEqual( json[ 1 ].name, "Peter", "Check JSON: second, name" );
-					assert.strictEqual( json[ 1 ][ "age" ], 25, "Check JSON: second, age" );
+					assert.strictEqual( json[ 1 ].age, 25, "Check JSON: second, age" );
 				}
 			},
 			{
@@ -1538,10 +1541,10 @@ QUnit.module( "ajax", {
 				],
 				success: function( json ) {
 					assert.ok( json.length >= 2, "Check length" );
-					assert.strictEqual( json[ 0 ][ "name" ], "John", "Check JSON: first, name" );
+					assert.strictEqual( json[ 0 ].name, "John", "Check JSON: first, name" );
-					assert.strictEqual( json[ 0 ][ "age" ], 21, "Check JSON: first, age" );
+					assert.strictEqual( json[ 0 ].age, 21, "Check JSON: first, age" );
-					assert.strictEqual( json[ 1 ][ "name" ], "Peter", "Check JSON: second, name" );
+					assert.strictEqual( json[ 1 ].name, "Peter", "Check JSON: second, name" );
-					assert.strictEqual( json[ 1 ][ "age" ], 25, "Check JSON: second, age" );
+					assert.strictEqual( json[ 1 ].age, 25, "Check JSON: second, age" );
 				}
 			}
 		];
@@ -1562,10 +1565,10 @@ QUnit.module( "ajax", {
 					assert.strictEqual( typeof text, "string", "json wasn't auto-determined" );
 					var json = JSON.parse( text );
 					assert.ok( json.length >= 2, "Check length" );
-					assert.strictEqual( json[ 0 ][ "name" ], "John", "Check JSON: first, name" );
+					assert.strictEqual( json[ 0 ].name, "John", "Check JSON: first, name" );
-					assert.strictEqual( json[ 0 ][ "age" ], 21, "Check JSON: first, age" );
+					assert.strictEqual( json[ 0 ].age, 21, "Check JSON: first, age" );
-					assert.strictEqual( json[ 1 ][ "name" ], "Peter", "Check JSON: second, name" );
+					assert.strictEqual( json[ 1 ].name, "Peter", "Check JSON: second, name" );
-					assert.strictEqual( json[ 1 ][ "age" ], 25, "Check JSON: second, age" );
+					assert.strictEqual( json[ 1 ].age, 25, "Check JSON: second, age" );
 				}
 			},
 			{
@@ -1587,10 +1590,10 @@ QUnit.module( "ajax", {
 					assert.strictEqual( typeof text, "string", "json wasn't auto-determined" );
 					var json = JSON.parse( text );
 					assert.ok( json.length >= 2, "Check length" );
-					assert.strictEqual( json[ 0 ][ "name" ], "John", "Check JSON: first, name" );
+					assert.strictEqual( json[ 0 ].name, "John", "Check JSON: first, name" );
-					assert.strictEqual( json[ 0 ][ "age" ], 21, "Check JSON: first, age" );
+					assert.strictEqual( json[ 0 ].age, 21, "Check JSON: first, age" );
-					assert.strictEqual( json[ 1 ][ "name" ], "Peter", "Check JSON: second, name" );
+					assert.strictEqual( json[ 1 ].name, "Peter", "Check JSON: second, name" );
-					assert.strictEqual( json[ 1 ][ "age" ], 25, "Check JSON: second, age" );
+					assert.strictEqual( json[ 1 ].age, 25, "Check JSON: second, age" );
 				}
 			}
 		];
@@ -1816,6 +1819,7 @@ QUnit.module( "ajax", {
 	var ifModifiedNow = new Date();
 
 	jQuery.each(
+
 		/* jQuery.each arguments start */
 		{
 			" (cache)": true,
@@ -1870,6 +1874,7 @@ QUnit.module( "ajax", {
 				}
 			);
 		}
+
 		/* jQuery.each arguments end */
 	);
 
@@ -1940,6 +1945,7 @@ QUnit.module( "ajax", {
 		}
 
 		jQuery.each(
+
 			/* jQuery.each arguments start */
 			{
 				"name.html": true,
@@ -2014,6 +2020,7 @@ QUnit.module( "ajax", {
 				} );
 
 			}
+
 			/* jQuery.each arguments end*/
 		);
 	} );
@@ -2815,10 +2822,10 @@ if ( typeof window.ArrayBuffer === "undefined" || typeof new XMLHttpRequest().re
 			},
 			function( json ) {
 				assert.ok( json.length >= 2, "Check length" );
-				assert.strictEqual( json[ 0 ][ "name" ], "John", "Check JSON: first, name" );
+				assert.strictEqual( json[ 0 ].name, "John", "Check JSON: first, name" );
-				assert.strictEqual( json[ 0 ][ "age" ], 21, "Check JSON: first, age" );
+				assert.strictEqual( json[ 0 ].age, 21, "Check JSON: first, age" );
-				assert.strictEqual( json[ 1 ][ "name" ], "Peter", "Check JSON: second, name" );
+				assert.strictEqual( json[ 1 ].name, "Peter", "Check JSON: second, name" );
-				assert.strictEqual( json[ 1 ][ "age" ], 25, "Check JSON: second, age" );
+				assert.strictEqual( json[ 1 ].age, 25, "Check JSON: second, age" );
 				done();
 			}
 		);
@@ -2828,9 +2835,9 @@ if ( typeof window.ArrayBuffer === "undefined" || typeof new XMLHttpRequest().re
 		assert.expect( 2 );
 		var done = assert.async();
 		jQuery.getJSON( url( "mock.php?action=json" ), function( json ) {
-			if ( json && json[ "data" ] ) {
+			if ( json && json.data ) {
-				assert.strictEqual( json[ "data" ][ "lang" ], "en", "Check JSON: lang" );
+				assert.strictEqual( json.data.lang, "en", "Check JSON: lang" );
-				assert.strictEqual( json[ "data" ].length, 25, "Check JSON: length" );
+				assert.strictEqual( json.data.length, 25, "Check JSON: length" );
 				done();
 			}
 		} );
@@ -2870,7 +2877,7 @@ if ( typeof window.ArrayBuffer === "undefined" || typeof new XMLHttpRequest().re
 
 			Globals.register( "testBar" );
 			jQuery.getScript( url( "mock.php?action=testbar" ), function() {
-				assert.strictEqual( window[ "testBar" ], "bar", "Check if script was evaluated" );
+				assert.strictEqual( window.testBar, "bar", "Check if script was evaluated" );
 				done();
 			} );
 		}
@@ -2901,7 +2908,7 @@ if ( typeof window.ArrayBuffer === "undefined" || typeof new XMLHttpRequest().re
 		jQuery.getScript( {
 			url: url( "mock.php?action=testbar" ),
 			success: function() {
-				assert.strictEqual( window[ "testBar" ], "bar", "Check if script was evaluated" );
+				assert.strictEqual( window.testBar, "bar", "Check if script was evaluated" );
 				done();
 			}
 		} );
@@ -3003,7 +3010,7 @@ if ( typeof window.ArrayBuffer === "undefined" || typeof new XMLHttpRequest().re
 		assert.expect( 7 );
 		var done = assert.async();
 		var verifyEvaluation = function() {
-			assert.strictEqual( window[ "testBar" ], "bar", "Check if script src was evaluated after load" );
+			assert.strictEqual( window.testBar, "bar", "Check if script src was evaluated after load" );
 			assert.strictEqual( jQuery( "#ap" ).html(), "bar", "Check if script evaluation has modified DOM" );
 			done();
 		};
@@ -3014,7 +3021,7 @@ if ( typeof window.ArrayBuffer === "undefined" || typeof new XMLHttpRequest().re
 		jQuery( "#first" ).load( url( "mock.php?action=testHTML&baseURL=" + baseURL ), function() {
 			assert.ok( jQuery( "#first" ).html().match( /^html text/ ), "Check content after loading html" );
 			assert.strictEqual( jQuery( "#foo" ).html(), "foo", "Check if script evaluation has modified DOM" );
-			assert.strictEqual( window[ "testFoo" ], "foo", "Check if script was evaluated after load" );
+			assert.strictEqual( window.testFoo, "foo", "Check if script was evaluated after load" );
 			setTimeout( verifyEvaluation, 600 );
 		} );
 	} );
@@ -3026,7 +3033,7 @@ if ( typeof window.ArrayBuffer === "undefined" || typeof new XMLHttpRequest().re
 
 		jQuery( "#first" ).load( url( "test2.html" ), function() {
 			assert.strictEqual( jQuery( "#foo" ).html(), "foo", "Check if script evaluation has modified DOM" );
-			assert.strictEqual( window[ "testFoo" ], "foo", "Check if script was evaluated after load" );
+			assert.strictEqual( window.testFoo, "foo", "Check if script was evaluated after load" );
 			done();
 		} );
 	} );

test/unit/attributes.js

@@ -239,7 +239,7 @@ QUnit.test( "attr(Hash)", function( assert ) {
 	assert.equal(
 		jQuery( "#text1" ).attr( {
 			"value": function() {
-				return this[ "id" ];
+				return this.id;
 			} } ).attr( "value" ),
 		"text1",
 		"Set attribute to computed value #1"
@@ -394,11 +394,11 @@ QUnit.test( "attr(String, Object)", function( assert ) {
 	table = jQuery( "#table" ).append( "<tr><td>cell</td></tr><tr><td>cell</td><td>cell</td></tr><tr><td>cell</td><td>cell</td></tr>" );
 	td = table.find( "td" ).eq( 0 );
 	td.attr( "rowspan", "2" );
-	assert.equal( td[ 0 ][ "rowSpan" ], 2, "Check rowspan is correctly set" );
+	assert.equal( td[ 0 ].rowSpan, 2, "Check rowspan is correctly set" );
 	td.attr( "colspan", "2" );
-	assert.equal( td[ 0 ][ "colSpan" ], 2, "Check colspan is correctly set" );
+	assert.equal( td[ 0 ].colSpan, 2, "Check colspan is correctly set" );
 	table.attr( "cellspacing", "2" );
-	assert.equal( table[ 0 ][ "cellSpacing" ], "2", "Check cellspacing is correctly set" );
+	assert.equal( table[ 0 ].cellSpacing, "2", "Check cellspacing is correctly set" );
 
 	assert.equal( jQuery( "#area1" ).attr( "value" ), undefined, "Value attribute is distinct from value property." );
 
@@ -456,6 +456,7 @@ QUnit.test( "attr(String, Object)", function( assert ) {
 
 	$radio = jQuery( "<input>", {
 		"value": "sup",
+
 		// Use uppercase here to ensure the type
 		// attrHook is still used
 		"TYPE": "radio"
@@ -701,9 +702,9 @@ QUnit.test( "prop(String, Object) on null/undefined", function( assert ) {
 		$body = jQuery( body );
 
 	assert.ok( $body.prop( "nextSibling" ) === null, "Make sure a null expando returns null" );
-	body[ "foo" ] = "bar";
+	body.foo = "bar";
 	assert.equal( $body.prop( "foo" ), "bar", "Make sure the expando is preferred over the dom attribute" );
-	body[ "foo" ] = undefined;
+	body.foo = undefined;
 	assert.ok( $body.prop( "foo" ) === undefined, "Make sure the expando is preferred over the dom attribute, even if undefined" );
 
 	select = document.createElement( "select" );
@@ -848,7 +849,7 @@ QUnit.test( "removeProp(String)", function( assert ) {
 		obj = {};
 
 	assert.strictEqual(
-		jQuery( "#firstp" ).prop( "nonexisting", "foo" ).removeProp( "nonexisting" )[ 0 ][ "nonexisting" ],
+		jQuery( "#firstp" ).prop( "nonexisting", "foo" ).removeProp( "nonexisting" )[ 0 ].nonexisting,
 		undefined,
 		"removeprop works correctly on DOM element nodes"
 	);
@@ -856,12 +857,12 @@ QUnit.test( "removeProp(String)", function( assert ) {
 	jQuery.each( [ document, obj ], function( i, ele ) {
 		var $ele = jQuery( ele );
 		$ele.prop( "nonexisting", "foo" ).removeProp( "nonexisting" );
-		assert.strictEqual( ele[ "nonexisting" ], undefined, "removeProp works correctly on non DOM element nodes (bug trac-7500)." );
+		assert.strictEqual( ele.nonexisting, undefined, "removeProp works correctly on non DOM element nodes (bug trac-7500)." );
 	} );
 	jQuery.each( [ commentNode, textNode, attributeNode ], function( i, ele ) {
 		var $ele = jQuery( ele );
 		$ele.prop( "nonexisting", "foo" ).removeProp( "nonexisting" );
-		assert.strictEqual( ele[ "nonexisting" ], undefined, "removeProp works correctly on non DOM element nodes (bug trac-7500)." );
+		assert.strictEqual( ele.nonexisting, undefined, "removeProp works correctly on non DOM element nodes (bug trac-7500)." );
 	} );
 } );
 
@@ -1116,7 +1117,7 @@ QUnit.test( "val(select) after form.reset() (Bug trac-2551)", function( assert )
 
 	jQuery( "#kkk" ).val( "gf" );
 
-	document[ "kk" ].reset();
+	document.kk.reset();
 
 	assert.equal( jQuery( "#kkk" )[ 0 ].value, "cf", "Check value of select after form reset." );
 	assert.equal( jQuery( "#kkk" ).val(), "cf", "Check value of select after form reset." );

test/unit/callbacks.js

@@ -19,6 +19,7 @@ var output,
 	outputA = addToOutput( "A" ),
 	outputB = addToOutput( "B" ),
 	outputC = addToOutput( "C" ),
+	/* eslint-disable key-spacing */
 	tests = {
 		"":                   "XABC   X     XABCABCC  X  XBB X   XABA  X   XX",
 		"once":               "XABC   X     X         X  X   X   XABA  X   XX",
@@ -227,7 +228,9 @@ jQuery.each( tests, function( strFlags, resultString ) {
 					// Return false
 					output = "X";
 					cblist = jQuery.Callbacks( flags );
-					cblist.add( outputA, function() { return false; }, outputB );
+					cblist.add( outputA, function() {
+						return false;
+					}, outputB );
 					cblist.add( outputA );
 					cblist.fire();
 					assert.strictEqual( output, results.shift(), "Callback returning false" );
@@ -269,7 +272,7 @@ QUnit.test( "jQuery.Callbacks( options ) - options are copied", function( assert
 		fn = function() {
 			assert.ok( !( count++ ), "called once" );
 		};
-	options[ "unique" ] = false;
+	options.unique = false;
 	cb.add( fn, fn );
 	cb.fire();
 } );
@@ -364,7 +367,9 @@ QUnit.test( "jQuery.Callbacks() - disabled callback doesn't fire (gh-1790)", fun
 
 	var cb = jQuery.Callbacks(),
 		fired = false,
-		shot = function() { fired = true; };
+		shot = function() {
+			fired = true;
+		};
 
 	cb.disable();
 	cb.empty();
@@ -379,8 +384,12 @@ QUnit.test( "jQuery.Callbacks() - list with memory stays locked (gh-3469)", func
 
 	var cb = jQuery.Callbacks( "memory" ),
 		fired = 0,
-		count1 = function() { fired += 1; },
+		count1 = function() {
-		count2 = function() { fired += 10; };
+			fired += 1;
+		},
+		count2 = function() {
+			fired += 10;
+		};
 
 	cb.add( count1 );
 	cb.fire();

test/unit/core.js

@@ -38,19 +38,21 @@ QUnit.test( "jQuery()", function( assert ) {
 	// few here but beware of modular builds where these methods may be excluded.
 	if ( includesModule( "deprecated" ) ) {
 		expected++;
-		attrObj[ "click" ] = function() { assert.ok( exec, "Click executed." ); };
+		attrObj.click = function() {
+			assert.ok( exec, "Click executed." );
+		};
 	}
 	if ( includesModule( "dimensions" ) ) {
 		expected++;
-		attrObj[ "width" ] = 10;
+		attrObj.width = 10;
 	}
 	if ( includesModule( "offset" ) ) {
 		expected++;
-		attrObj[ "offset" ] = { "top": 1, "left": 1 };
+		attrObj.offset = { "top": 1, "left": 1 };
 	}
 	if ( includesModule( "css" ) ) {
 		expected += 2;
-		attrObj[ "css" ] = { "paddingLeft": 1, "paddingRight": 1 };
+		attrObj.css = { "paddingLeft": 1, "paddingRight": 1 };
 	}
 	if ( includesModule( "attributes" ) ) {
 		expected++;
@@ -216,17 +218,17 @@ QUnit.test( "noConflict", function( assert ) {
 	var $$ = jQuery;
 
 	assert.strictEqual( jQuery, jQuery.noConflict(), "noConflict returned the jQuery object" );
-	assert.strictEqual( window[ "jQuery" ], $$, "Make sure jQuery wasn't touched." );
+	assert.strictEqual( window.jQuery, $$, "Make sure jQuery wasn't touched." );
-	assert.strictEqual( window[ "$" ], original$, "Make sure $ was reverted." );
+	assert.strictEqual( window.$, original$, "Make sure $ was reverted." );
 
 	jQuery = $ = $$;
 
 	assert.strictEqual( jQuery.noConflict( true ), $$, "noConflict returned the jQuery object" );
-	assert.strictEqual( window[ "jQuery" ], originaljQuery, "Make sure jQuery was reverted." );
+	assert.strictEqual( window.jQuery, originaljQuery, "Make sure jQuery was reverted." );
-	assert.strictEqual( window[ "$" ], original$, "Make sure $ was reverted." );
+	assert.strictEqual( window.$, original$, "Make sure $ was reverted." );
 	assert.ok( $$().pushStack( [] ), "Make sure that jQuery still works." );
 
-	window[ "jQuery" ] = jQuery = $$;
+	window.jQuery = jQuery = $$;
 } );
 
 QUnit.test( "isPlainObject", function( assert ) {
@@ -274,7 +276,7 @@ QUnit.test( "isPlainObject", function( assert ) {
 
 	// Makes the function a little more realistic
 	// (and harder to detect, incidentally)
-	fn.prototype[ "someMethod" ] = function() {};
+	fn.prototype.someMethod = function() {};
 
 	// Again, instantiated objects shouldn't be matched
 	assert.ok( !jQuery.isPlainObject( new fn() ), "new fn" );
@@ -431,10 +433,10 @@ QUnit.test( "XSS via location.hash", function( assert ) {
 	var done = assert.async();
 	assert.expect( 1 );
 
-	jQuery[ "_check9521" ] = function( x ) {
+	jQuery._check9521 = function( x ) {
 		assert.ok( x, "script called from #id-like selector with inline handler" );
 		jQuery( "#check9521" ).remove();
-		delete jQuery[ "_check9521" ];
+		delete jQuery._check9521;
 		done();
 	};
 	try {
@@ -442,7 +444,7 @@ QUnit.test( "XSS via location.hash", function( assert ) {
 		// This throws an error because it's processed like an id
 		jQuery( "#<img id='check9521' src='no-such-.gif' onerror='jQuery._check9521(false)'>" ).appendTo( "#qunit-fixture" );
 	} catch ( err ) {
-		jQuery[ "_check9521" ]( true );
+		jQuery._check9521( true );
 	}
 } );
 
@@ -451,12 +453,12 @@ QUnit.test( "jQuery('html')", function( assert ) {
 
 	var s, div, j;
 
-	jQuery[ "foo" ] = false;
+	jQuery.foo = false;
 	s = jQuery( "<script>jQuery.foo='test';</script>" )[ 0 ];
 	assert.ok( s, "Creating a script" );
-	assert.ok( !jQuery[ "foo" ], "Make sure the script wasn't executed prematurely" );
+	assert.ok( !jQuery.foo, "Make sure the script wasn't executed prematurely" );
 	jQuery( "body" ).append( "<script>jQuery.foo='test';</script>" );
-	assert.ok( jQuery[ "foo" ], "Executing a script's contents in the right context" );
+	assert.ok( jQuery.foo, "Executing a script's contents in the right context" );
 
 	// Test multi-line HTML
 	div = jQuery( "<div>\r\nsome text\n<p>some p</p>\nmore text\r\n</div>" )[ 0 ];
@@ -584,20 +586,20 @@ QUnit.test( "inArray()", function( assert ) {
 	assert.expect( 19 );
 
 	var selections = {
-		p:   q( "firstp", "sap", "ap", "first" ),
+		p: q( "firstp", "sap", "ap", "first" ),
-		em:  q( "siblingnext", "siblingfirst" ),
+		em: q( "siblingnext", "siblingfirst" ),
 		div: q( "qunit-testrunner-toolbar", "nothiddendiv", "nothiddendivchild", "foo" ),
-		a:   q( "mark", "groups", "google", "simon1" ),
+		a: q( "mark", "groups", "google", "simon1" ),
 		empty: []
 	},
 	tests = {
-		p:    { elem: jQuery( "#ap" )[ 0 ],           index: 2 },
+		p: { elem: jQuery( "#ap" )[ 0 ], index: 2 },
-		em:   { elem: jQuery( "#siblingfirst" )[ 0 ], index: 1 },
+		em: { elem: jQuery( "#siblingfirst" )[ 0 ], index: 1 },
-		div:  { elem: jQuery( "#nothiddendiv" )[ 0 ], index: 1 },
+		div: { elem: jQuery( "#nothiddendiv" )[ 0 ], index: 1 },
-		a:    { elem: jQuery( "#simon1" )[ 0 ],       index: 3 }
+		a: { elem: jQuery( "#simon1" )[ 0 ], index: 3 }
 	},
 	falseTests = {
-		p:  jQuery( "#liveSpan1" )[ 0 ],
+		p: jQuery( "#liveSpan1" )[ 0 ],
 		em: jQuery( "#nothiddendiv" )[ 0 ],
 		empty: ""
 	};
@@ -634,7 +636,9 @@ QUnit.test( "each(Function)", function( assert ) {
 	var div, pass, i;
 
 	div = jQuery( "div" );
-	div.each( function() {this.foo = "zoo";} );
+	div.each( function() {
+this.foo = "zoo";
+} );
 	pass = true;
 	for ( i = 0; i < div.length; i++ ) {
 		if ( div.get( i ).foo !== "zoo" ) {
@@ -740,8 +744,12 @@ QUnit.test( "jQuery.map", function( assert ) {
 
 	result = {
 		Zero: function() {},
-		One: function( a ) { a = a; },
+		One: function( a ) {
-		Two: function( a, b ) { a = a; b = b; }
+			a = a;
+		},
+		Two: function( a, b ) {
+			a = a; b = b;
+		}
 	};
 	callback = function( v, k ) {
 		assert.equal( k, "foo", label + "-argument function treated like object" );
@@ -999,25 +1007,25 @@ QUnit.test( "jQuery.extend(Object, Object)", function( assert ) {
 	assert.deepEqual( options, optionsCopy, "Check if not modified: options must not be modified" );
 
 	jQuery.extend( true, deep1, deep2 );
-	assert.deepEqual( deep1[ "foo" ], deepmerged[ "foo" ], "Check if foo: settings must be extended" );
+	assert.deepEqual( deep1.foo, deepmerged.foo, "Check if foo: settings must be extended" );
-	assert.deepEqual( deep2[ "foo" ], deep2copy[ "foo" ], "Check if not deep2: options must not be modified" );
+	assert.deepEqual( deep2.foo, deep2copy.foo, "Check if not deep2: options must not be modified" );
-	assert.equal( deep1[ "foo2" ], document, "Make sure that a deep clone was not attempted on the document" );
+	assert.equal( deep1.foo2, document, "Make sure that a deep clone was not attempted on the document" );
 
-	assert.ok( jQuery.extend( true, {}, nestedarray )[ "arr" ] !== arr, "Deep extend of object must clone child array" );
+	assert.ok( jQuery.extend( true, {}, nestedarray ).arr !== arr, "Deep extend of object must clone child array" );
 
 	// trac-5991
-	assert.ok( Array.isArray( jQuery.extend( true, { "arr": {} }, nestedarray )[ "arr" ] ), "Cloned array have to be an Array" );
+	assert.ok( Array.isArray( jQuery.extend( true, { "arr": {} }, nestedarray ).arr ), "Cloned array have to be an Array" );
-	assert.ok( jQuery.isPlainObject( jQuery.extend( true, { "arr": arr }, { "arr": {} } )[ "arr" ] ), "Cloned object have to be an plain object" );
+	assert.ok( jQuery.isPlainObject( jQuery.extend( true, { "arr": arr }, { "arr": {} } ).arr ), "Cloned object have to be an plain object" );
 
 	empty = {};
 	optionsWithLength = { "foo": { "length": -1 } };
 	jQuery.extend( true, empty, optionsWithLength );
-	assert.deepEqual( empty[ "foo" ], optionsWithLength[ "foo" ], "The length property must copy correctly" );
+	assert.deepEqual( empty.foo, optionsWithLength.foo, "The length property must copy correctly" );
 
 	empty = {};
 	optionsWithDate = { "foo": { "date": new Date() } };
 	jQuery.extend( true, empty, optionsWithDate );
-	assert.deepEqual( empty[ "foo" ], optionsWithDate[ "foo" ], "Dates copy correctly" );
+	assert.deepEqual( empty.foo, optionsWithDate.foo, "Dates copy correctly" );
 
 	/** @constructor */
 	myKlass = function() {};
@@ -1025,13 +1033,13 @@ QUnit.test( "jQuery.extend(Object, Object)", function( assert ) {
 	optionsWithCustomObject = { "foo": { "date": customObject } };
 	empty = {};
 	jQuery.extend( true, empty, optionsWithCustomObject );
-	assert.ok( empty[ "foo" ] && empty[ "foo" ][ "date" ] === customObject, "Custom objects copy correctly (no methods)" );
+	assert.ok( empty.foo && empty.foo.date === customObject, "Custom objects copy correctly (no methods)" );
 
 	// Makes the class a little more realistic
 	myKlass.prototype = { "someMethod": function() {} };
 	empty = {};
 	jQuery.extend( true, empty, optionsWithCustomObject );
-	assert.ok( empty[ "foo" ] && empty[ "foo" ][ "date" ] === customObject, "Custom objects copy correctly" );
+	assert.ok( empty.foo && empty.foo.date === customObject, "Custom objects copy correctly" );
 
 	MyNumber = Number;
 
@@ -1039,18 +1047,18 @@ QUnit.test( "jQuery.extend(Object, Object)", function( assert ) {
 	assert.ok( parseInt( ret.foo, 10 ) === 5, "Wrapped numbers copy correctly" );
 
 	nullUndef = jQuery.extend( {}, options, { "xnumber2": null } );
-	assert.ok( nullUndef[ "xnumber2" ] === null, "Check to make sure null values are copied" );
+	assert.ok( nullUndef.xnumber2 === null, "Check to make sure null values are copied" );
 
 	nullUndef = jQuery.extend( {}, options, { "xnumber2": undefined } );
-	assert.ok( nullUndef[ "xnumber2" ] === options[ "xnumber2" ], "Check to make sure undefined values are not copied" );
+	assert.ok( nullUndef.xnumber2 === options.xnumber2, "Check to make sure undefined values are not copied" );
 
 	nullUndef = jQuery.extend( {}, options, { "xnumber0": null } );
-	assert.ok( nullUndef[ "xnumber0" ] === null, "Check to make sure null values are inserted" );
+	assert.ok( nullUndef.xnumber0 === null, "Check to make sure null values are inserted" );
 
 	target = {};
-	recursive = { foo:target, bar:5 };
+	recursive = { foo: target, bar: 5 };
 	jQuery.extend( true, target, recursive );
-	assert.deepEqual( target, { bar:5 }, "Check to make sure a recursive obj doesn't go never-ending loop by not copying it over" );
+	assert.deepEqual( target, { bar: 5 }, "Check to make sure a recursive obj doesn't go never-ending loop by not copying it over" );
 
 	ret = jQuery.extend( true, { foo: [] }, { foo: [ 0 ] } ); // 1907
 	assert.equal( ret.foo.length, 1, "Check to make sure a value with coercion 'false' copies over when necessary to fix trac-1907" );
@@ -1058,11 +1066,11 @@ QUnit.test( "jQuery.extend(Object, Object)", function( assert ) {
 	ret = jQuery.extend( true, { foo: "1,2,3" }, { foo: [ 1, 2, 3 ] } );
 	assert.ok( typeof ret.foo !== "string", "Check to make sure values equal with coercion (but not actually equal) overwrite correctly" );
 
-	ret = jQuery.extend( true, { foo:"bar" }, { foo:null } );
+	ret = jQuery.extend( true, { foo: "bar" }, { foo: null } );
 	assert.ok( typeof ret.foo !== "undefined", "Make sure a null value doesn't crash with deep extend, for trac-1908" );
 
-	obj = { foo:null };
+	obj = { foo: null };
-	jQuery.extend( true, obj, { foo:"notnull" } );
+	jQuery.extend( true, obj, { foo: "notnull" } );
 	assert.equal( obj.foo, "notnull", "Make sure a null value can be overwritten" );
 
 	function func() {}
@@ -1172,8 +1180,12 @@ QUnit.test( "jQuery.each(Object,Function)", function( assert ) {
 
 	seen = {
 		Zero: function() {},
-		One: function( a ) { a = a; },
+		One: function( a ) {
-		Two: function( a, b ) { a = a; b = b; }
+			a = a;
+		},
+		Two: function( a, b ) {
+			a = a; b = b;
+		}
 	};
 	callback = function( k ) {
 		assert.equal( k, "foo", label + "-argument function treated like object" );
@@ -1282,7 +1294,9 @@ QUnit.test( "jQuery.makeArray", function( assert ) {
 
 	assert.equal( jQuery.makeArray( document.getElementsByName( "PWD" ) ).slice( 0, 1 )[ 0 ].name, "PWD", "Pass makeArray a nodelist" );
 
-	assert.equal( ( function() { return jQuery.makeArray( arguments ); } )( 1, 2 ).join( "" ), "12", "Pass makeArray an arguments array" );
+	assert.equal( ( function() {
+		return jQuery.makeArray( arguments );
+	} )( 1, 2 ).join( "" ), "12", "Pass makeArray an arguments array" );
 
 	assert.equal( jQuery.makeArray( [ 1, 2, 3 ] ).join( "" ), "123", "Pass makeArray a real array" );
 
@@ -1296,12 +1310,14 @@ QUnit.test( "jQuery.makeArray", function( assert ) {
 
 	assert.equal( jQuery.makeArray( document.createElement( "div" ) )[ 0 ].nodeName.toUpperCase(), "DIV", "Pass makeArray a single node" );
 
-	assert.equal( jQuery.makeArray( { length:2, 0:"a", 1:"b" } ).join( "" ), "ab", "Pass makeArray an array like map (with length)" );
+	assert.equal( jQuery.makeArray( { length: 2, 0: "a", 1: "b" } ).join( "" ), "ab", "Pass makeArray an array like map (with length)" );
 
 	assert.ok( !!jQuery.makeArray( document.documentElement.childNodes ).slice( 0, 1 )[ 0 ].nodeName, "Pass makeArray a childNodes array" );
 
 	// function, is tricky as it has length
-	assert.equal( jQuery.makeArray( function() { return 1;} )[ 0 ](), 1, "Pass makeArray a function" );
+	assert.equal( jQuery.makeArray( function() {
+		return 1;
+	} )[ 0 ](), 1, "Pass makeArray a function" );
 
 	//window, also has length
 	assert.equal( jQuery.makeArray( window )[ 0 ], window, "Pass makeArray the window" );
@@ -1327,7 +1343,7 @@ QUnit.test( "jQuery.isEmptyObject", function( assert ) {
 	assert.expect( 2 );
 
 	assert.equal( true, jQuery.isEmptyObject( {} ), "isEmptyObject on empty object literal" );
-	assert.equal( false, jQuery.isEmptyObject( { a:1 } ), "isEmptyObject on non-empty object literal" );
+	assert.equal( false, jQuery.isEmptyObject( { a: 1 } ), "isEmptyObject on non-empty object literal" );
 
 	// What about this ?
 	// equal(true, jQuery.isEmptyObject(null), "isEmptyObject on null" );

test/unit/css.js

@@ -38,7 +38,7 @@ QUnit.test( "css(String|Hash)", function( assert ) {
 
 	width = parseFloat( jQuery( "#nothiddendiv" ).css( "width" ) );
 	height = parseFloat( jQuery( "#nothiddendiv" ).css( "height" ) );
-	jQuery( "#nothiddendiv" ).css( { "overflow":"hidden", "width": -1, "height": -1 } );
+	jQuery( "#nothiddendiv" ).css( { "overflow": "hidden", "width": -1, "height": -1 } );
 	assert.equal( parseFloat( jQuery( "#nothiddendiv" ).css( "width" ) ), 0, "Test negative width set to 0" );
 	assert.equal( parseFloat( jQuery( "#nothiddendiv" ).css( "height" ) ), 0, "Test negative height set to 0" );
 
@@ -321,8 +321,7 @@ QUnit.test( "css(String, Object)", function( assert ) {
 	success = true;
 	try {
 		jQuery( "#foo" ).css( "backgroundColor", "rgba(0, 0, 0, 0.1)" );
-	}
+	} catch ( e ) {
-	catch ( e ) {
 		success = false;
 	}
 	assert.ok( success, "Setting RGBA values does not throw Error (trac-5509)" );
@@ -1203,6 +1202,7 @@ QUnit.test( "Do not append px (trac-9548, trac-12990, gh-2792)", function( asser
 
 	$div.css( "animation-iteration-count", 2 );
 	if ( $div.css( "animation-iteration-count" ) !== undefined ) {
+
 		// if $div.css( "animation-iteration-count" ) return "1",
 		// it actually return the default value of animation-iteration-count
 		assert.equal( $div.css( "animation-iteration-count" ), 2, "Do not append px to 'animation-iteration-count'" );
@@ -1714,7 +1714,7 @@ QUnit.test( "Do not throw on frame elements from css method (trac-15098)", funct
 		if ( transformName ) {
 			assert.equal( elemStyle[ transformName ], transformVal, "setting properly-prefixed transform" );
 		}
-		assert.equal( elemStyle[ "undefined" ], undefined, "Nothing writes to node.style.undefined" );
+		assert.equal( elemStyle.undefined, undefined, "Nothing writes to node.style.undefined" );
 	} );
 
 	QUnit.test( "Don't detect fake set properties on a node when caching the prefixed version", function( assert ) {
@@ -1829,6 +1829,7 @@ QUnit.testUnlessIE( "Don't append px to CSS vars", function( assert ) {
 // Support: IE 11+
 // This test requires Grid to be *not supported* to work.
 if ( QUnit.isIE ) {
+
 	// Make sure explicitly provided IE vendor prefix (`-ms-`) is not converted
 	// to a non-working `Ms` prefix in JavaScript.
 	QUnit.test( "IE vendor prefixes are not mangled", function( assert ) {

test/unit/data.js

@@ -74,14 +74,14 @@ function dataTests( elem, assert ) {
 
 	assert.strictEqual( jQuery.hasData( elem ), false, "jQuery.hasData agrees no data exists even when an empty data obj exists" );
 
-	dataObj[ "foo" ] = "bar";
+	dataObj.foo = "bar";
 	assert.equal( jQuery.data( elem, "foo" ), "bar", "Data is readable by jQuery.data when set directly on a returned data object" );
 
 	assert.strictEqual( jQuery.hasData( elem ), true, "jQuery.hasData agrees data exists when data exists" );
 
 	jQuery.data( elem, "foo", "baz" );
 	assert.equal( jQuery.data( elem, "foo" ), "baz", "Data can be changed by jQuery.data" );
-	assert.equal( dataObj[ "foo" ], "baz", "Changes made through jQuery.data propagate to referenced data object" );
+	assert.equal( dataObj.foo, "baz", "Changes made through jQuery.data propagate to referenced data object" );
 
 	jQuery.data( elem, "foo", undefined );
 	assert.equal( jQuery.data( elem, "foo" ), "baz", "Data is not unset by passing undefined to jQuery.data" );
@@ -398,7 +398,7 @@ QUnit.test( "data-* attributes", function( assert ) {
 			break;
 		case 2:
 			assert.equal( jQuery( elem ).data( "zoooo" ), "bar", "Check zoooo property" );
-			assert.deepEqual( jQuery( elem ).data( "bar" ), { "test":"baz" }, "Check bar property" );
+			assert.deepEqual( jQuery( elem ).data( "bar" ), { "test": "baz" }, "Check bar property" );
 			break;
 		case 3:
 			assert.equal( jQuery( elem ).data( "number" ), true, "Check number property" );
@@ -426,13 +426,13 @@ QUnit.test( ".data(Object)", function( assert ) {
 	assert.equal( div.data( "test" ), "in", "Verify setting an object in data" );
 	assert.equal( div.data( "test2" ), "in2", "Verify setting an object in data" );
 
-	obj = { test:"unset" };
+	obj = { test: "unset" };
 	jqobj = jQuery( obj );
 
 	jqobj.data( "test", "unset" );
 	jqobj.data( { "test": "in", "test2": "in2" } );
-	assert.equal( jQuery.data( obj )[ "test" ], "in", "Verify setting an object on an object extends the data object" );
+	assert.equal( jQuery.data( obj ).test, "in", "Verify setting an object on an object extends the data object" );
-	assert.equal( obj[ "test2" ], undefined, "Verify setting an object on an object does not extend the object" );
+	assert.equal( obj.test2, undefined, "Verify setting an object on an object does not extend the object" );
 
 	// manually clean up detached elements
 	div.remove();
@@ -521,12 +521,12 @@ QUnit.test( ".data should follow html5 specification regarding camel casing", fu
 	var div = jQuery( "<div id='myObject' data-w-t-f='ftw' data-big-a-little-a='bouncing-b' data-foo='a' data-foo-bar='b' data-foo-bar-baz='c'></div>" )
 		.prependTo( "body" );
 
-	assert.equal( div.data()[ "wTF" ], "ftw", "Verify single letter data-* key" );
+	assert.equal( div.data().wTF, "ftw", "Verify single letter data-* key" );
-	assert.equal( div.data()[ "bigALittleA" ], "bouncing-b", "Verify single letter mixed data-* key" );
+	assert.equal( div.data().bigALittleA, "bouncing-b", "Verify single letter mixed data-* key" );
 
-	assert.equal( div.data()[ "foo" ], "a", "Verify single word data-* key" );
+	assert.equal( div.data().foo, "a", "Verify single word data-* key" );
-	assert.equal( div.data()[ "fooBar" ], "b", "Verify multiple word data-* key" );
+	assert.equal( div.data().fooBar, "b", "Verify multiple word data-* key" );
-	assert.equal( div.data()[ "fooBarBaz" ], "c", "Verify multiple word data-* key" );
+	assert.equal( div.data().fooBarBaz, "c", "Verify multiple word data-* key" );
 
 	assert.equal( div.data( "foo" ), "a", "Verify single word data-* key" );
 	assert.equal( div.data( "fooBar" ), "b", "Verify multiple word data-* key" );

test/unit/deferred.js

@@ -108,7 +108,9 @@ QUnit.test( "jQuery.Deferred.then - filtering (done)", function( assert ) {
 		piped = defer.then( function( a, b ) {
 			return a * b;
 		} ),
-		done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
+		done = jQuery.map( new Array( 3 ), function() {
+			return assert.async();
+		} );
 
 	piped.done( function( result ) {
 		value3 = result;
@@ -145,7 +147,9 @@ QUnit.test( "jQuery.Deferred.then - filtering (fail)", function( assert ) {
 		piped = defer.then( null, function( a, b ) {
 			return a * b;
 		} ),
-		done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
+		done = jQuery.map( new Array( 3 ), function() {
+			return assert.async();
+		} );
 
 	piped.done( function( result ) {
 		value3 = result;
@@ -181,7 +185,9 @@ QUnit.test( "jQuery.Deferred.catch", function( assert ) {
 		piped = defer.catch( function( a, b ) {
 			return a * b;
 		} ),
-		done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
+		done = jQuery.map( new Array( 3 ), function() {
+			return assert.async();
+		} );
 
 	piped.done( function( result ) {
 		value3 = result;
@@ -218,7 +224,9 @@ QUnit.test( "[PIPE ONLY] jQuery.Deferred.pipe - filtering (fail)", function( ass
 		piped = defer.pipe( null, function( a, b ) {
 			return a * b;
 		} ),
-		done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
+		done = jQuery.map( new Array( 3 ), function() {
+			return assert.async();
+		} );
 
 	piped.fail( function( result ) {
 		value3 = result;
@@ -416,7 +424,9 @@ QUnit.test( "jQuery.Deferred.then - context", function( assert ) {
 
 	var defer, piped, defer2, piped2,
 		context = { custom: true },
-		done = jQuery.map( new Array( 5 ), function() { return assert.async(); } );
+		done = jQuery.map( new Array( 5 ), function() {
+			return assert.async();
+		} );
 
 	jQuery.Deferred().resolveWith( context, [ 2 ] ).then( function( value ) {
 		assert.strictEqual( this, context, "custom context received by .then handler" );
@@ -475,7 +485,9 @@ QUnit.test( "[PIPE ONLY] jQuery.Deferred.pipe - context", function( assert ) {
 
 	var defer, piped, defer2, piped2,
 		context = { custom: true },
-		done = jQuery.map( new Array( 5 ), function() { return assert.async(); } );
+		done = jQuery.map( new Array( 5 ), function() {
+			return assert.async();
+		} );
 
 	jQuery.Deferred().resolveWith( context, [ 2 ] ).pipe( function( value ) {
 		assert.strictEqual( this, context, "custom context received by .pipe handler" );
@@ -642,7 +654,9 @@ QUnit.test( "jQuery.Deferred - 1.x/2.x compatibility", function( assert ) {
 
 	var context = { id: "callback context" },
 		thenable = jQuery.Deferred().resolve( "thenable fulfillment" ).promise(),
-		done = jQuery.map( new Array( 8 ), function() { return assert.async(); } );
+		done = jQuery.map( new Array( 8 ), function() {
+			return assert.async();
+		} );
 
 	thenable.unwrapped = false;
 
@@ -693,7 +707,9 @@ QUnit.test( "jQuery.Deferred.then - progress and thenables", function( assert )
 
 	var trigger = jQuery.Deferred().notify(),
 		expectedProgress = [ "baz", "baz" ],
-		done = jQuery.map( new Array( 2 ), function() { return assert.async(); } ),
+		done = jQuery.map( new Array( 2 ), function() {
+			return assert.async();
+		} ),
 		failer = function( evt ) {
 			return function() {
 				assert.ok( false, "no unexpected " + evt );
@@ -718,7 +734,9 @@ QUnit.test( "jQuery.Deferred - notify and resolve", function( assert ) {
 	assert.expect( 7 );
 
 	var notifiedResolved = jQuery.Deferred().notify( "foo" )/*xxx .resolve( "bar" )*/,
-		done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
+		done = jQuery.map( new Array( 3 ), function() {
+			return assert.async();
+		} );
 
 	notifiedResolved.progress( function( v ) {
 		assert.strictEqual( v, "foo", "progress value" );
@@ -798,7 +816,9 @@ QUnit.test( "jQuery.when(nonThenable) - like Promise.resolve", function( assert
 
 	assert.expect( 44 );
 
-	var defaultContext = ( function getDefaultContext() { return this; } )(),
+	var defaultContext = ( function getDefaultContext() {
+		return this;
+	} )(),
 
 		done = assert.async( 20 );
 
@@ -914,7 +934,9 @@ QUnit.test( "jQuery.when(thenable) - like Promise.resolve", function( assert ) {
 		},
 		numCases = Object.keys( willSucceed ).length + Object.keys( willError ).length,
 
-		defaultContext = ( function getDefaultContext() { return this; } )(),
+		defaultContext = ( function getDefaultContext() {
+			return this;
+		} )(),
 
 		done = assert.async( numCases * 2 );
 
@@ -992,7 +1014,9 @@ QUnit.test( "jQuery.when(a, b) - like Promise.all", function( assert ) {
 			rejectedStandardPromise: true
 		},
 
-		defaultContext = ( function getDefaultContext() { return this; } )(),
+		defaultContext = ( function getDefaultContext() {
+			return this;
+		} )(),
 
 		done = assert.async( 98 );
 

test/unit/deprecated.js

@@ -46,8 +46,12 @@ QUnit.test( "hover() mouseenter mouseleave", function( assert ) {
 	assert.expect( 1 );
 
 	var times = 0,
-		handler1 = function() { ++times; },
+		handler1 = function() {
-		handler2 = function() { ++times; };
+ ++times;
+},
+		handler2 = function() {
+ ++times;
+};
 
 	jQuery( "#firstp" )
 		.hover( handler1, handler2 )

test/unit/effects.js

@@ -8,8 +8,12 @@ if ( !includesModule( "effects" ) ) {
 var fxInterval = 13,
 	oldRaf = window.requestAnimationFrame,
 	hideOptions = {
-		inline: function() { jQuery.style( this, "display", "none" ); },
+		inline: function() {
-		cascade: function() { this.className = "hidden"; }
+			jQuery.style( this, "display", "none" );
+		},
+		cascade: function() {
+			this.className = "hidden";
+		}
 	};
 
 QUnit.module( "effects", {
@@ -540,12 +544,12 @@ QUnit.test( "animate duration 0", function( assert ) {
 	assert.expect( 11 );
 
 	var $elem,
-		$elems = jQuery( [ { a:0 }, { a:0 } ] ),
+		$elems = jQuery( [ { a: 0 }, { a: 0 } ] ),
 		counter = 0;
 
 	assert.equal( jQuery.timers.length, 0, "Make sure no animation was running from another test" );
 
-	$elems.eq( 0 ).animate( { a:1 }, 0, function() {
+	$elems.eq( 0 ).animate( { a: 1 }, 0, function() {
 		assert.ok( true, "Animate a simple property." );
 		counter++;
 	} );
@@ -555,18 +559,18 @@ QUnit.test( "animate duration 0", function( assert ) {
 
 	assert.equal( counter, 1, "One synchronic animations" );
 
-	$elems.animate( { a:2 }, 0, function() {
+	$elems.animate( { a: 2 }, 0, function() {
 		assert.ok( true, "Animate a second simple property." );
 		counter++;
 	} );
 
 	assert.equal( counter, 3, "Multiple synchronic animations" );
 
-	$elems.eq( 0 ).animate( { a:3 }, 0, function() {
+	$elems.eq( 0 ).animate( { a: 3 }, 0, function() {
 		assert.ok( true, "Animate a third simple property." );
 		counter++;
 	} );
-	$elems.eq( 1 ).animate( { a:3 }, fxInterval * 20, function() {
+	$elems.eq( 1 ).animate( { a: 3 }, fxInterval * 20, function() {
 		counter++;
 
 		// Failed until [6115]
@@ -948,15 +952,33 @@ jQuery.each( {
 			num = 0;
 
 			// TODO: uncrowd this
-			if ( t_h === "show" ) { num++; }
+			if ( t_h === "show" ) {
-			if ( t_w === "show" ) { num++; }
+				num++;
-			if ( t_w === "hide" || t_w === "show" ) { num++; }
+			}
-			if ( t_h === "hide" || t_h === "show" ) { num++; }
+			if ( t_w === "show" ) {
-			if ( t_o === "hide" || t_o === "show" ) { num++; }
+				num++;
-			if ( t_w === "hide" ) { num++; }
+			}
-			if ( t_o.constructor === Number ) { num += 2; }
+			if ( t_w === "hide" || t_w === "show" ) {
-			if ( t_w.constructor === Number ) { num += 2; }
+				num++;
-			if ( t_h.constructor === Number ) { num += 2; }
+			}
+			if ( t_h === "hide" || t_h === "show" ) {
+				num++;
+			}
+			if ( t_o === "hide" || t_o === "show" ) {
+				num++;
+			}
+			if ( t_w === "hide" ) {
+				num++;
+			}
+			if ( t_o.constructor === Number ) {
+				num += 2;
+			}
+			if ( t_w.constructor === Number ) {
+				num += 2;
+			}
+			if ( t_h.constructor === Number ) {
+				num += 2;
+			}
 
 			assert.expect( num );
 
@@ -2457,7 +2479,9 @@ QUnit.test( "Show/hide/toggle and display: inline", function( assert ) {
 				.hide().show( N ),
 			$el.clone().data( { call: "hide+toggle", done: "inline" } ).appendTo( fixture )
 				.hide().toggle( N )
-		], function( $clone ) { return $clone[ 0 ]; } );
+		], function( $clone ) {
+			return $clone[ 0 ];
+		} );
 
 		// Animations not allowed to complete
 		interrupted = jQuery.map( [
@@ -2465,7 +2489,9 @@ QUnit.test( "Show/hide/toggle and display: inline", function( assert ) {
 			$el.clone().data( { call: "toggle+stop" } ).appendTo( fixture ).toggle( N ),
 			$el.clone().data( { call: "hide+show+stop" } ).appendTo( fixture ).hide().show( N ),
 			$el.clone().data( { call: "hide+toggle+stop" } ).appendTo( fixture ).hide().toggle( N )
-		], function( $clone ) { return $clone[ 0 ]; } );
+		], function( $clone ) {
+			return $clone[ 0 ];
+		} );
 
 		// All elements should be inline-block during the animation
 		clock.tick( N / 2 );

test/unit/event.js

@@ -224,12 +224,12 @@ QUnit.test( "on(), namespace with special add", function( assert ) {
 
 	div.on( "test.a", { x: 1 }, function( e ) {
 		assert.ok( !!e.xyz, "Make sure that the data is getting passed through." );
-		assert.equal( e.data[ "x" ], 1, "Make sure data is attached properly." );
+		assert.equal( e.data.x, 1, "Make sure data is attached properly." );
 	} );
 
 	div.on( "test.b", { x: 2 }, function( e ) {
 		assert.ok( !!e.xyz, "Make sure that the data is getting passed through." );
-		assert.equal( e.data[ "x" ], 2, "Make sure data is attached properly." );
+		assert.equal( e.data.x, 2, "Make sure data is attached properly." );
 	} );
 
 	// Should trigger 5
@@ -293,14 +293,14 @@ QUnit.test( "on/one/off(Object)", function( assert ) {
 
 		// Regular bind
 		.on( {
-			"click":handler,
+			"click": handler,
-			"mouseover":handler
+			"mouseover": handler
 		} )
 
 		// Bind with data
 		.one( {
-			"click":handlerWithData,
+			"click": handlerWithData,
-			"mouseover":handlerWithData
+			"mouseover": handlerWithData
 		}, 2 );
 
 	trigger();
@@ -313,8 +313,8 @@ QUnit.test( "on/one/off(Object)", function( assert ) {
 	assert.equal( mouseoverCounter, 4, "on(Object)" );
 
 	jQuery( "#firstp" ).off( {
-		"click":handler,
+		"click": handler,
-		"mouseover":handler
+		"mouseover": handler
 	} );
 
 	trigger();
@@ -553,7 +553,9 @@ QUnit.test( "on(), namespaced events, cloned events", function( assert ) {
 	} ).trigger( "tester" );
 
 	// Make sure events stick with appendTo'd elements (which are cloned) trac-2027
-	jQuery( "<a href='#fail' class='test'>test</a>" ).on( "click", function() { return false; } ).appendTo( "#qunit-fixture" );
+	jQuery( "<a href='#fail' class='test'>test</a>" ).on( "click", function() {
+		return false;
+	} ).appendTo( "#qunit-fixture" );
 	assert.ok( jQuery( "a.test" ).eq( 0 ).triggerHandler( "click" ) === false, "Handler is bound to appendTo'd elements" );
 } );
 
@@ -704,7 +706,9 @@ QUnit.test( "on(name, false), off(name, false)", function( assert ) {
 	assert.expect( 3 );
 
 	var main = 0;
-	jQuery( "#qunit-fixture" ).on( "click", function() { main++; } );
+	jQuery( "#qunit-fixture" ).on( "click", function() {
+		main++;
+	} );
 	jQuery( "#ap" ).trigger( "click" );
 	assert.equal( main, 1, "Verify that the trigger happened correctly." );
 
@@ -727,7 +731,9 @@ QUnit.test( "on(name, selector, false), off(name, selector, false)", function( a
 
 	var main = 0;
 
-	jQuery( "#qunit-fixture" ).on( "click", "#ap", function() { main++; } );
+	jQuery( "#qunit-fixture" ).on( "click", "#ap", function() {
+		main++;
+	} );
 	jQuery( "#ap" ).trigger( "click" );
 	assert.equal( main, 1, "Verify that the trigger happened correctly." );
 
@@ -766,7 +772,7 @@ QUnit.test( "on()/trigger()/off() on plain object", function( assert ) {
 
 	events = jQuery._data( obj, "events" );
 	assert.ok( events, "Object has events bound." );
-	assert.equal( obj[ "events" ], undefined, "Events object on plain objects is not events" );
+	assert.equal( obj.events, undefined, "Events object on plain objects is not events" );
 	assert.equal( obj.test, undefined, "Make sure that test event is not on the plain object." );
 	assert.equal( obj.handle, undefined, "Make sure that the event handler is not on the plain object." );
 
@@ -785,7 +791,7 @@ QUnit.test( "on()/trigger()/off() on plain object", function( assert ) {
 
 	assert.equal( obj && obj[ jQuery.expando ] &&
 			obj[ jQuery.expando ][ jQuery.expando ] &&
-			obj[ jQuery.expando ][ jQuery.expando ][ "events" ], undefined, "Make sure events object is removed" );
+			obj[ jQuery.expando ][ jQuery.expando ].events, undefined, "Make sure events object is removed" );
 } );
 
 QUnit.test( "off(type)", function( assert ) {
@@ -938,12 +944,26 @@ QUnit.test( "trigger() bubbling", function( assert ) {
 
 	var win = 0, doc = 0, html = 0, body = 0, main = 0, ap = 0;
 
-	jQuery( window ).on( "click", function() { win++; } );
+	jQuery( window ).on( "click", function() {
-	jQuery( document ).on( "click", function( e ) { if ( e.target !== document ) { doc++; } } );
+		win++;
-	jQuery( "html" ).on( "click", function() { html++; } );
+	} );
-	jQuery( "body" ).on( "click", function() { body++; } );
+	jQuery( document ).on( "click", function( e ) {
-	jQuery( "#qunit-fixture" ).on( "click", function() { main++; } );
+		if ( e.target !== document ) {
-	jQuery( "#ap" ).on( "click", function() { ap++; return false; } );
+			doc++;
+		}
+	} );
+	jQuery( "html" ).on( "click", function() {
+		html++;
+	} );
+	jQuery( "body" ).on( "click", function() {
+		body++;
+	} );
+	jQuery( "#qunit-fixture" ).on( "click", function() {
+		main++;
+	} );
+	jQuery( "#ap" ).on( "click", function() {
+		ap++; return false;
+	} );
 
 	jQuery( "html" ).trigger( "click" );
 	assert.equal( win, 1, "HTML bubble" );
@@ -1159,7 +1179,9 @@ QUnit.test( "trigger(eventObject, [data], [fn])", function( assert ) {
 	event.stopPropagation();
 	assert.equal( event.isPropagationStopped(), true, "Verify isPropagationStopped" );
 
-	event.isPropagationStopped = function() { return false; };
+	event.isPropagationStopped = function() {
+		return false;
+	};
 	event.stopImmediatePropagation();
 	assert.equal( event.isPropagationStopped(), true, "Verify isPropagationStopped" );
 	assert.equal( event.isImmediatePropagationStopped(), true, "Verify isPropagationStopped" );
@@ -1394,7 +1416,9 @@ QUnit.test( "Submit event can be stopped (trac-11049)", function( assert ) {
 			return false;
 		} )
 		.find( "#myform input[type=submit]" )
-			.each( function() { this.click(); } )
+			.each( function() {
+				this.click();
+			} )
 		.end()
 		.on( "submit", function() {
 			assert.ok( false, "submit bubbled on second handler" );
@@ -1506,10 +1530,18 @@ QUnit.test( ".on()/.off()", function( assert ) {
 	var event, clicked, hash, called, livec, lived, livee,
 		submit = 0, div = 0, livea = 0, liveb = 0;
 
-	jQuery( "#body" ).on( "submit", "#qunit-fixture div", function() { submit++; return false; } );
+	jQuery( "#body" ).on( "submit", "#qunit-fixture div", function() {
-	jQuery( "#body" ).on( "click", "#qunit-fixture div", function() { div++; } );
+		submit++; return false;
-	jQuery( "#body" ).on( "click", "div#nothiddendiv", function() { livea++; } );
+	} );
-	jQuery( "#body" ).on( "click", "div#nothiddendivchild", function() { liveb++; } );
+	jQuery( "#body" ).on( "click", "#qunit-fixture div", function() {
+		div++;
+	} );
+	jQuery( "#body" ).on( "click", "div#nothiddendiv", function() {
+		livea++;
+} );
+	jQuery( "#body" ).on( "click", "div#nothiddendivchild", function() {
+		liveb++;
+	} );
 
 	// Nothing should trigger on the body
 	jQuery( "body" ).trigger( "click" );
@@ -1569,7 +1601,9 @@ QUnit.test( ".on()/.off()", function( assert ) {
 
 	// Make sure that stopPropagation doesn't stop live events
 	submit = 0; div = 0; livea = 0; liveb = 0;
-	jQuery( "#body" ).on( "click", "div#nothiddendivchild", function( e ) { liveb++; e.stopPropagation(); } );
+	jQuery( "#body" ).on( "click", "div#nothiddendivchild", function( e ) {
+		liveb++; e.stopPropagation();
+	} );
 	jQuery( "div#nothiddendivchild" ).trigger( "click" );
 	assert.equal( submit, 0, "stopPropagation Click on inner div" );
 	assert.equal( div, 1, "stopPropagation Click on inner div" );
@@ -1591,7 +1625,9 @@ QUnit.test( ".on()/.off()", function( assert ) {
 
 	// Test binding with a different context
 	clicked = 0;
-	jQuery( "#qunit-fixture" ).on( "click", "#foo", function() { clicked++; } );
+	jQuery( "#qunit-fixture" ).on( "click", "#foo", function() {
+		clicked++;
+	} );
 	jQuery( "#qunit-fixture div" ).trigger( "click" );
 	jQuery( "#foo" ).trigger( "click" );
 	jQuery( "#qunit-fixture" ).trigger( "click" );
@@ -1635,14 +1671,18 @@ QUnit.test( ".on()/.off()", function( assert ) {
 	jQuery( "#body" ).off( "click", "#foo" );
 
 	// Verify that return false prevents default action
-	jQuery( "#body" ).on( "click", "#anchor2", function() { return false; } );
+	jQuery( "#body" ).on( "click", "#anchor2", function() {
+		return false;
+	} );
 	hash = window.location.hash;
 	jQuery( "#anchor2" ).trigger( "click" );
 	assert.equal( window.location.hash, hash, "return false worked" );
 	jQuery( "#body" ).off( "click", "#anchor2" );
 
 	// Verify that .preventDefault() prevents default action
-	jQuery( "#body" ).on( "click", "#anchor2", function( e ) { e.preventDefault(); } );
+	jQuery( "#body" ).on( "click", "#anchor2", function( e ) {
+		e.preventDefault();
+	} );
 	hash = window.location.hash;
 	jQuery( "#anchor2" ).trigger( "click" );
 	assert.equal( window.location.hash, hash, "e.preventDefault() worked" );
@@ -1650,7 +1690,9 @@ QUnit.test( ".on()/.off()", function( assert ) {
 
 	// Test binding the same handler to multiple points
 	called = 0;
-	function callback() { called++; return false; }
+	function callback() {
+		called++; return false;
+	}
 
 	jQuery( "#body" ).on( "click", "#nothiddendiv", callback );
 	jQuery( "#body" ).on( "click", "#anchor2", callback );
@@ -1696,8 +1738,14 @@ QUnit.test( ".on()/.off()", function( assert ) {
 	livec = 0;
 	jQuery( "#nothiddendivchild" ).html( "<span></span>" );
 
-	jQuery( "#body" ).on( "click", "#nothiddendivchild", function() { jQuery( "#nothiddendivchild" ).html( "" ); } );
+	jQuery( "#body" ).on( "click", "#nothiddendivchild", function() {
-	jQuery( "#body" ).on( "click", "#nothiddendivchild", function( e ) { if ( e.target ) {livec++;} } );
+		jQuery( "#nothiddendivchild" ).html( "" );
+	} );
+	jQuery( "#body" ).on( "click", "#nothiddendivchild", function( e ) {
+		if ( e.target ) {
+			livec++;
+		}
+	} );
 
 	jQuery( "#nothiddendiv span" ).trigger( "click" );
 	assert.equal( jQuery( "#nothiddendiv span" ).length, 0, "Verify that first handler occurred and modified the DOM." );
@@ -1712,16 +1760,26 @@ QUnit.test( ".on()/.off()", function( assert ) {
 	livee = 0;
 
 	// bind one pair in one order
-	jQuery( "#body" ).on( "click", "span#liveSpan1 a", function() { lived++; return false; } );
+	jQuery( "#body" ).on( "click", "span#liveSpan1 a", function() {
-	jQuery( "#body" ).on( "click", "span#liveSpan1", function() { livee++; } );
+		lived++;
+		return false;
+	} );
+	jQuery( "#body" ).on( "click", "span#liveSpan1", function() {
+		livee++;
+	} );
 
 	jQuery( "span#liveSpan1 a" ).trigger( "click" );
 	assert.equal( lived, 1, "Verify that only one first handler occurred." );
 	assert.equal( livee, 0, "Verify that second handler doesn't." );
 
 	// and one pair in inverse
-	jQuery( "#body" ).on( "click", "span#liveSpan2", function() { livee++; } );
+	jQuery( "#body" ).on( "click", "span#liveSpan2", function() {
-	jQuery( "#body" ).on( "click", "span#liveSpan2 a", function() { lived++; return false; } );
+		livee++;
+	} );
+	jQuery( "#body" ).on( "click", "span#liveSpan2 a", function() {
+		lived++;
+		return false;
+	} );
 
 	lived = 0;
 	livee = 0;
@@ -1747,11 +1805,17 @@ QUnit.test( ".on()/.off()", function( assert ) {
 	// Work with deep selectors
 	livee = 0;
 
-	function clickB() { livee++; }
+	function clickB() {
+		livee++;
+	}
 
-	jQuery( "#body" ).on( "click", "#nothiddendiv div", function() { livee++; } );
+	jQuery( "#body" ).on( "click", "#nothiddendiv div", function() {
+		livee++;
+	} );
 	jQuery( "#body" ).on( "click", "#nothiddendiv div", clickB );
-	jQuery( "#body" ).on( "mouseover", "#nothiddendiv div", function() { livee++; } );
+	jQuery( "#body" ).on( "mouseover", "#nothiddendiv div", function() {
+		livee++;
+	} );
 
 	assert.equal( livee, 0, "No clicks, deep selector." );
 
@@ -1825,6 +1889,7 @@ QUnit.test( "events with type matching an Object.prototype property, cloned elem
 	elem.appendTo( "#qunit-fixture" );
 
 	try {
+
 		// Make sure the original element has some event data.
 		elem.on( "click", function() {} );
 
@@ -1859,6 +1924,7 @@ QUnit[ QUnit.jQuerySelectors ? "test" : "skip" ]( "delegated event with delegate
 		.off( "click" );
 
 	if ( QUnit.jQuerySelectorsPos ) {
+
 		// Positional selector (trac-11315)
 		markup.find( "ul" ).eq( 0 )
 			.on( "click", ">li>a", function() {
@@ -1954,8 +2020,12 @@ QUnit.test( "off all bound delegated events", function( assert ) {
 		clicks = 0,
 		div = jQuery( "#body" );
 
-	div.on( "click submit", "div#nothiddendivchild", function() { count++; } );
+	div.on( "click submit", "div#nothiddendivchild", function() {
-	div.on( "click", function() { clicks++; } );
+		count++;
+	} );
+	div.on( "click", function() {
+		clicks++;
+	} );
 	div.off( undefined, "**" );
 
 	jQuery( "div#nothiddendivchild" ).trigger( "click" );
@@ -1974,7 +2044,9 @@ QUnit.test( "on with multiple delegated events", function( assert ) {
 	var count = 0,
 		div = jQuery( "#body" );
 
-	div.on( "click submit", "div#nothiddendivchild", function() { count++; } );
+	div.on( "click submit", "div#nothiddendivchild", function() {
+		count++;
+	} );
 
 	jQuery( "div#nothiddendivchild" ).trigger( "click" );
 	jQuery( "div#nothiddendivchild" ).trigger( "submit" );
@@ -2329,7 +2401,7 @@ QUnit.test( ".on and .off", function( assert ) {
 
 	// We should have removed all the event handlers ... kinda hacky way to check this
 	data = jQuery.data[ jQuery( "#onandoff" )[ 0 ].expando ] || {};
-	assert.equal( data[ "events" ], undefined, "no events left" );
+	assert.equal( data.events, undefined, "no events left" );
 
 	$onandoff.remove();
 } );
@@ -2403,7 +2475,7 @@ QUnit.test( "special on name mapping", function( assert ) {
 		.trigger( "gutfeeling" )	// This one should not
 		.remove();
 
-	delete jQuery.event.special[ "gutfeeling" ];
+	delete jQuery.event.special.gutfeeling;
 } );
 
 QUnit.test( ".on and .off, selective mixed removal (trac-10705)", function( assert ) {
@@ -2564,7 +2636,9 @@ QUnit.test( "addProp extensions", function( assert ) {
 	fireNative( $fixture[ 0 ], "click" );
 	$fixture.off( "click" );
 
-	jQuery.event.addProp( "testProperty", function() { return 42; } );
+	jQuery.event.addProp( "testProperty", function() {
+		return 42;
+	} );
 
 	// Trigger a native click and ensure the property is set
 	$fixture.on( "click", function( event ) {
@@ -3393,6 +3467,7 @@ QUnit.test( "focus change during a focus handler (gh-4382)", function( assert )
 	} );
 
 	jQuery( document ).on( "focusin.focusTests", function( ev ) {
+
 		// Support: IE 11+
 		// In IE focus is async so focusin on document is fired multiple times,
 		// for each of the elements. In other browsers it's fired just once, for

test/unit/manipulation.js

@@ -1325,9 +1325,13 @@ QUnit.test( "Empty replaceWith (trac-13401; trac-13596; gh-2204)", function( ass
 	jQuery.each( tests, function( label, input ) {
 		$el.html( "<a></a>" ).children().replaceWith( input );
 		assert.strictEqual( $el.html(), "", "replaceWith(" + label + ")" );
-		$el.html( "<b></b>" ).children().replaceWith( function() { return input; } );
+		$el.html( "<b></b>" ).children().replaceWith( function() {
+			return input;
+		} );
 		assert.strictEqual( $el.html(), "", "replaceWith(function returning " + label + ")" );
-		$el.html( "<i></i>" ).children().replaceWith( function( i ) { return input; } );
+		$el.html( "<i></i>" ).children().replaceWith( function( i ) {
+			return input;
+		} );
 		assert.strictEqual( $el.html(), "", "replaceWith(other function returning " + label + ")" );
 		$el.html( "<p></p>" ).children().replaceWith( function( i ) {
 			return i ?
@@ -1567,7 +1571,9 @@ QUnit.test( "clone(form element) (Bug trac-3879, trac-6655)", function( assert )
 
 	element = jQuery( "<select><option>Foo</option><option value='selected' selected>Bar</option></select>" );
 
-	assert.equal( element.clone().find( "option" ).filter( function() { return this.selected; } ).val(), "selected", "Selected option cloned correctly" );
+	assert.equal( element.clone().find( "option" ).filter( function() {
+		return this.selected;
+	} ).val(), "selected", "Selected option cloned correctly" );
 
 	element = jQuery( "<input type='checkbox' value='foo'>" ).attr( "checked", "checked" );
 	clone = element.clone();
@@ -2217,8 +2223,7 @@ QUnit.test( "domManip plain-text caching (trac-6779)", function( assert ) {
 	for ( i = 0; i < bad.length; i++ ) {
 		try {
 			$f.append( bad[ i ] );
-		}
+		} catch ( e ) {}
-		catch ( e ) {}
 	}
 	assert.equal( $f.text(), bad.join( "" ), "Cached strings that match Object properties" );
 	$f.remove();

test/unit/offset.js

@@ -165,9 +165,9 @@ testIframe( "absolute", "offset/absolute.html", function( assert, $ ) {
 
 	// get offset tests
 	tests = [
-		{ "id": "#absolute-1",     "top":  1, "left":  1 },
+		{ "id": "#absolute-1",     "top": 1, "left": 1 },
-		{ "id": "#absolute-1-1",   "top":  5, "left":  5 },
+		{ "id": "#absolute-1-1",   "top": 5, "left": 5 },
-		{ "id": "#absolute-1-1-1", "top":  9, "left":  9 },
+		{ "id": "#absolute-1-1-1", "top": 9, "left": 9 },
 		{ "id": "#absolute-2",     "top": 20, "left": 20 }
 	];
 	jQuery.each( tests, function() {
@@ -177,9 +177,9 @@ testIframe( "absolute", "offset/absolute.html", function( assert, $ ) {
 
 	// get position
 	tests = [
-		{ "id": "#absolute-1",     "top":  0, "left":  0 },
+		{ "id": "#absolute-1",     "top": 0, "left": 0 },
-		{ "id": "#absolute-1-1",   "top":  1, "left":  1 },
+		{ "id": "#absolute-1-1",   "top": 1, "left": 1 },
-		{ "id": "#absolute-1-1-1", "top":  1, "left":  1 },
+		{ "id": "#absolute-1-1-1", "top": 1, "left": 1 },
 		{ "id": "#absolute-2",     "top": 19, "left": 19 }
 	];
 	jQuery.each( tests, function() {
@@ -199,17 +199,17 @@ testIframe( "absolute", "offset/absolute.html", function( assert, $ ) {
 		{ "id": "#absolute-2",     "top": -1, "left": -1 },
 		{ "id": "#absolute-2",     "top": 19, "left": 19 },
 		{ "id": "#absolute-1-1-1", "top": 15, "left": 15 },
-		{ "id": "#absolute-1-1-1", "top":  5, "left":  5 },
+		{ "id": "#absolute-1-1-1", "top": 5, "left": 5 },
 		{ "id": "#absolute-1-1-1", "top": -1, "left": -1 },
-		{ "id": "#absolute-1-1-1", "top":  9, "left":  9 },
+		{ "id": "#absolute-1-1-1", "top": 9, "left": 9 },
 		{ "id": "#absolute-1-1",   "top": 10, "left": 10 },
-		{ "id": "#absolute-1-1",   "top":  0, "left":  0 },
+		{ "id": "#absolute-1-1",   "top": 0, "left": 0 },
 		{ "id": "#absolute-1-1",   "top": -1, "left": -1 },
-		{ "id": "#absolute-1-1",   "top":  5, "left":  5 },
+		{ "id": "#absolute-1-1",   "top": 5, "left": 5 },
-		{ "id": "#absolute-1",     "top":  2, "left":  2 },
+		{ "id": "#absolute-1",     "top": 2, "left": 2 },
-		{ "id": "#absolute-1",     "top":  0, "left":  0 },
+		{ "id": "#absolute-1",     "top": 0, "left": 0 },
 		{ "id": "#absolute-1",     "top": -1, "left": -1 },
-		{ "id": "#absolute-1",     "top":  1, "left":  1 }
+		{ "id": "#absolute-1",     "top": 1, "left": 1 }
 	];
 	jQuery.each( tests, function() {
 		$( this.id ).offset( { "top": this.top, "left": this.left } );
@@ -228,13 +228,13 @@ testIframe( "absolute", "offset/absolute.html", function( assert, $ ) {
 
 		$( this.id )
 			.offset( { "left": this.left + 2 } )
-			.offset( { "top":  this.top  + 2 } );
+			.offset( { "top": this.top  + 2 } );
 		assert.equal( $( this.id ).offset().top,  this.top  + 2, "Setting one property at a time." );
 		assert.equal( $( this.id ).offset().left, this.left + 2, "Setting one property at a time." );
 
 		$( this.id ).offset( { "top": this.top, "left": this.left, "using": function( props ) {
 			$( this ).css( {
-				"top":  props.top  + 1,
+				"top": props.top  + 1,
 				"left": props.left + 1
 			} );
 		} } );
@@ -248,8 +248,8 @@ testIframe( "relative", "offset/relative.html", function( assert, $ ) {
 
 	// get offset
 	var tests = [
-		{ "id": "#relative-1",   "top":   7, "left":  7 },
+		{ "id": "#relative-1",   "top": 7, "left": 7 },
-		{ "id": "#relative-1-1", "top":  15, "left": 15 },
+		{ "id": "#relative-1-1", "top": 15, "left": 15 },
 		{ "id": "#relative-2",   "top": 142, "left": 27 },
 		{ "id": "#relative-2-1",   "top": 149, "left": 52 }
 	];
@@ -260,8 +260,8 @@ testIframe( "relative", "offset/relative.html", function( assert, $ ) {
 
 	// get position
 	tests = [
-		{ "id": "#relative-1",   "top":   6, "left":  6 },
+		{ "id": "#relative-1",   "top": 6, "left": 6 },
-		{ "id": "#relative-1-1", "top":   5, "left":  5 },
+		{ "id": "#relative-1-1", "top": 5, "left": 5 },
 		{ "id": "#relative-2",   "top": 141, "left": 26 },
 		{ "id": "#relative-2-1",   "top": 5, "left": 5 }
 	];
@@ -272,18 +272,18 @@ testIframe( "relative", "offset/relative.html", function( assert, $ ) {
 
 	// set offset
 	tests = [
-		{ "id": "#relative-2",   "top": 200, "left":  50 },
+		{ "id": "#relative-2",   "top": 200, "left": 50 },
-		{ "id": "#relative-2",   "top": 100, "left":  10 },
+		{ "id": "#relative-2",   "top": 100, "left": 10 },
-		{ "id": "#relative-2",   "top":  -5, "left":  -5 },
+		{ "id": "#relative-2",   "top": -5, "left": -5 },
-		{ "id": "#relative-2",   "top": 142, "left":  27 },
+		{ "id": "#relative-2",   "top": 142, "left": 27 },
 		{ "id": "#relative-1-1", "top": 100, "left": 100 },
-		{ "id": "#relative-1-1", "top":   5, "left":   5 },
+		{ "id": "#relative-1-1", "top": 5, "left": 5 },
-		{ "id": "#relative-1-1", "top":  -1, "left":  -1 },
+		{ "id": "#relative-1-1", "top": -1, "left": -1 },
-		{ "id": "#relative-1-1", "top":  15, "left":  15 },
+		{ "id": "#relative-1-1", "top": 15, "left": 15 },
 		{ "id": "#relative-1",   "top": 100, "left": 100 },
-		{ "id": "#relative-1",   "top":   0, "left":   0 },
+		{ "id": "#relative-1",   "top": 0, "left": 0 },
-		{ "id": "#relative-1",   "top":  -1, "left":  -1 },
+		{ "id": "#relative-1",   "top": -1, "left": -1 },
-		{ "id": "#relative-1",   "top":   7, "left":   7 }
+		{ "id": "#relative-1",   "top": 7, "left": 7 }
 	];
 	jQuery.each( tests, function() {
 		$( this.id ).offset( { "top": this.top, "left": this.left } );
@@ -292,7 +292,7 @@ testIframe( "relative", "offset/relative.html", function( assert, $ ) {
 
 		$( this.id ).offset( { "top": this.top, "left": this.left, "using": function( props ) {
 			$( this ).css( {
-				"top":  props.top  + 1,
+				"top": props.top  + 1,
 				"left": props.left + 1
 			} );
 		} } );
@@ -306,9 +306,9 @@ testIframe( "static", "offset/static.html", function( assert, $ ) {
 
 	// get offset
 	var tests = [
-		{ "id": "#static-1",     "top":   7, "left":  7 },
+		{ "id": "#static-1",     "top": 7, "left": 7 },
-		{ "id": "#static-1-1",   "top":  15, "left": 15 },
+		{ "id": "#static-1-1",   "top": 15, "left": 15 },
-		{ "id": "#static-1-1-1", "top":  23, "left": 23 },
+		{ "id": "#static-1-1-1", "top": 23, "left": 23 },
 		{ "id": "#static-2",     "top": 122, left: 7 }
 	];
 	jQuery.each( tests, function() {
@@ -318,9 +318,9 @@ testIframe( "static", "offset/static.html", function( assert, $ ) {
 
 	// get position
 	tests = [
-		{ "id": "#static-1",     "top":   6, "left":  6 },
+		{ "id": "#static-1",     "top": 6, "left": 6 },
-		{ "id": "#static-1-1",   "top":  14, "left": 14 },
+		{ "id": "#static-1-1",   "top": 14, "left": 14 },
-		{ "id": "#static-1-1-1", "top":  22, "left": 22 },
+		{ "id": "#static-1-1-1", "top": 22, "left": 22 },
 		{ "id": "#static-2",     "top": 121, "left": 6 }
 	];
 	jQuery.each( tests, function() {
@@ -332,20 +332,20 @@ testIframe( "static", "offset/static.html", function( assert, $ ) {
 	tests = [
 		{ "id": "#static-2",     "top": 200, "left": 200 },
 		{ "id": "#static-2",     "top": 100, "left": 100 },
-		{ "id": "#static-2",     "top":  -2, "left":  -2 },
+		{ "id": "#static-2",     "top": -2, "left": -2 },
-		{ "id": "#static-2",     "top": 121, "left":   6 },
+		{ "id": "#static-2",     "top": 121, "left": 6 },
-		{ "id": "#static-1-1-1", "top":  50, "left":  50 },
+		{ "id": "#static-1-1-1", "top": 50, "left": 50 },
-		{ "id": "#static-1-1-1", "top":  10, "left":  10 },
+		{ "id": "#static-1-1-1", "top": 10, "left": 10 },
-		{ "id": "#static-1-1-1", "top":  -1, "left":  -1 },
+		{ "id": "#static-1-1-1", "top": -1, "left": -1 },
-		{ "id": "#static-1-1-1", "top":  22, "left":  22 },
+		{ "id": "#static-1-1-1", "top": 22, "left": 22 },
-		{ "id": "#static-1-1",   "top":  25, "left":  25 },
+		{ "id": "#static-1-1",   "top": 25, "left": 25 },
-		{ "id": "#static-1-1",   "top":  10, "left":  10 },
+		{ "id": "#static-1-1",   "top": 10, "left": 10 },
-		{ "id": "#static-1-1",   "top":  -3, "left":  -3 },
+		{ "id": "#static-1-1",   "top": -3, "left": -3 },
-		{ "id": "#static-1-1",   "top":  14, "left":  14 },
+		{ "id": "#static-1-1",   "top": 14, "left": 14 },
-		{ "id": "#static-1",     "top":  30, "left":  30 },
+		{ "id": "#static-1",     "top": 30, "left": 30 },
-		{ "id": "#static-1",     "top":   2, "left":   2 },
+		{ "id": "#static-1",     "top": 2, "left": 2 },
-		{ "id": "#static-1",     "top":  -2, "left":  -2 },
+		{ "id": "#static-1",     "top": -2, "left": -2 },
-		{ "id": "#static-1",     "top":   7, "left":   7 }
+		{ "id": "#static-1",     "top": 7, "left": 7 }
 	];
 	jQuery.each( tests, function() {
 		$( this.id ).offset( { "top": this.top, "left": this.left } );
@@ -354,7 +354,7 @@ testIframe( "static", "offset/static.html", function( assert, $ ) {
 
 		$( this.id ).offset( { "top": this.top, "left": this.left, "using": function( props ) {
 			$( this ).css( {
-				"top":  props.top  + 1,
+				"top": props.top  + 1,
 				"left": props.left + 1
 			} );
 		} } );
@@ -406,11 +406,11 @@ testIframe( "fixed", "offset/fixed.html", function( assert, $, window ) {
 
 	tests = [
 		{ "id": "#fixed-1", "top": 100, "left": 100 },
-		{ "id": "#fixed-1", "top":   0, "left":   0 },
+		{ "id": "#fixed-1", "top": 0, "left": 0 },
-		{ "id": "#fixed-1", "top":  -4, "left":  -4 },
+		{ "id": "#fixed-1", "top": -4, "left": -4 },
 		{ "id": "#fixed-2", "top": 200, "left": 200 },
-		{ "id": "#fixed-2", "top":   0, "left":   0 },
+		{ "id": "#fixed-2", "top": 0, "left": 0 },
-		{ "id": "#fixed-2", "top":  -5, "left":  -5 }
+		{ "id": "#fixed-2", "top": -5, "left": -5 }
 	];
 
 	jQuery.each( tests, function() {
@@ -420,7 +420,7 @@ testIframe( "fixed", "offset/fixed.html", function( assert, $, window ) {
 
 		$( this.id ).offset( { "top": this.top, "left": this.left, "using": function( props ) {
 			$( this ).css( {
-				"top":  props.top  + 1,
+				"top": props.top  + 1,
 				"left": props.left + 1
 			} );
 		} } );
@@ -516,7 +516,7 @@ testIframe( "body", "offset/body.html", function( assert, $ ) {
 QUnit.test( "chaining", function( assert ) {
 	assert.expect( 3 );
 
-	var coords = { "top":  1, "left":  1 };
+	var coords = { "top": 1, "left": 1 };
 	assert.equal( jQuery( "#absolute-1" ).offset( coords ).jquery, jQuery.fn.jquery, "offset(coords) returns jQuery object" );
 	assert.equal( jQuery( "#non-existent" ).offset( coords ).jquery, jQuery.fn.jquery, "offset(coords) with empty jQuery set returns jQuery object" );
 	assert.equal( jQuery( "#absolute-1" ).offset( undefined ).jquery, jQuery.fn.jquery, "offset(undefined) returns jQuery object (trac-5571)" );
@@ -556,17 +556,17 @@ QUnit.test( "chaining", function( assert ) {
 
 		// Initialize data about page elements
 		var expectations = {
-				"documentElement":   htmlProps( htmlPos ),
+				"documentElement": htmlProps( htmlPos ),
-				"body":              bodyProps( bodyPos ),
+				"body": bodyProps( bodyPos ),
-				"relative":          divProps( "relative", "body" ),
+				"relative": divProps( "relative", "body" ),
 				"relative-relative": divProps( "relative", "relative" ),
 				"relative-absolute": divProps( "absolute", "relative" ),
-				"absolute":          divProps( "absolute", "body" ),
+				"absolute": divProps( "absolute", "body" ),
 				"absolute-relative": divProps( "relative", "absolute" ),
 				"absolute-absolute": divProps( "absolute", "absolute" ),
-				"fixed":             divProps( "fixed" ),
+				"fixed": divProps( "fixed" ),
-				"fixed-relative":    divProps( "relative", "fixed" ),
+				"fixed-relative": divProps( "relative", "fixed" ),
-				"fixed-absolute":    divProps( "absolute", "fixed" )
+				"fixed-absolute": divProps( "absolute", "fixed" )
 			};
 
 		// Define position and offset expectations for page elements
@@ -592,6 +592,7 @@ QUnit.test( "chaining", function( assert ) {
 			//   parent is not offsetParent); offset includes parent offset+border+padding
 			// static: same as relative
 			for ( ; parent; parent = expectations[ parent.parent ] ) {
+
 				// position:fixed
 				if ( props.style === "fixed" ) {
 					break;

test/unit/queue.js

@@ -88,7 +88,9 @@ QUnit.test( "queue() passes in the next item in the queue as a parameter to fx q
 
 	div.queue( function( next ) {
 		assert.equal( ++counter, 1, "Dequeueing" );
-		setTimeout( function() { next(); }, 500 );
+		setTimeout( function() {
+			next();
+		}, 500 );
 	} ).queue( function( next ) {
 		assert.equal( ++counter, 2, "Next was called" );
 		next();
@@ -187,7 +189,9 @@ QUnit.test( "clearQueue() clears the fx queue", function( assert ) {
 	div.queue( function( next ) {
 		counter++;
 		var self = this;
-		setTimeout( function() { jQuery( self ).clearQueue(); next(); }, 50 );
+		setTimeout( function() {
+			jQuery( self ).clearQueue(); next();
+		}, 50 );
 	} ).queue( function() {
 		counter++;
 	} );

test/unit/selector.js

@@ -35,8 +35,8 @@ QUnit.test( "empty", function( assert ) {
 QUnit.test( "star", function( assert ) {
 	assert.expect( 2 );
 
-	var good, i;
+	var good, i,
-	var all = jQuery( "*" );
+		all = jQuery( "*" );
 
 	assert.ok( all.length >= 30, "Select all" );
 	good = true;
@@ -51,8 +51,8 @@ QUnit.test( "star", function( assert ) {
 QUnit.test( "element", function( assert ) {
 	assert.expect( 37 );
 
-	var i, lengthtest, siblingTest, html;
+	var i, lengthtest, siblingTest, html,
-	var fixture = document.getElementById( "qunit-fixture" );
+		fixture = document.getElementById( "qunit-fixture" );
 
 	assert.deepEqual( jQuery( "p", fixture ).get(), q( "firstp", "ap", "sndp", "en", "sap", "first" ), "Finding elements with a Node context." );
 	assert.deepEqual( jQuery( "p", "#qunit-fixture" ).get(), q( "firstp", "ap", "sndp", "en", "sap", "first" ), "Finding elements with a selector context." );
@@ -848,6 +848,7 @@ QUnit.test( "pseudo - nth-child", function( assert ) {
 			"Seeded nth-child"
 		);
 	} else {
+
 		// Support: Chrome 75+, Firefox 67+
 		// Some browsers mark disconnected elements as matching `:nth-child(n)`
 		// so let's skip the test.
@@ -901,6 +902,7 @@ QUnit.test( "pseudo - nth-last-child", function( assert ) {
 			"Seeded nth-last-child"
 		);
 	} else {
+
 		// Support: Chrome 75+, Firefox 67+
 		// Some browsers mark disconnected elements as matching `:nth-last-child(n)`
 		// so let's skip the test.
@@ -1037,6 +1039,7 @@ QUnit.test( "pseudo - misc", function( assert ) {
 	tmp = document.createElement( "div" );
 	tmp.id = "tmp_input";
 	tmp.innerHTML = "<span>Hello I am focusable.</span>";
+
 	// Setting tabIndex should make the element focusable
 	// https://html.spec.whatwg.org/#the-tabindex-attribute
 	document.body.appendChild( tmp );
@@ -1093,6 +1096,7 @@ QUnit.test( "pseudo - misc", function( assert ) {
 	);
 
 	if ( QUnit.jQuerySelectors ) {
+
 		// Tokenization edge cases
 		assert.t( "Sequential pseudos", "#qunit-fixture p:has(:contains(mark)):has(code)", [ "ap" ] );
 		assert.t( "Sequential pseudos", "#qunit-fixture p:has(:contains(mark)):has(code):contains(This link)", [ "ap" ] );
@@ -1158,6 +1162,7 @@ QUnit.test( "pseudo - :not", function( assert ) {
 		assert.t( ":not() failing interior", "#qunit-fixture p:not(div#blargh)", [ "firstp", "ap", "sndp", "en", "sap", "first" ] );
 		assert.t( ":not() failing interior", "#qunit-fixture p:not(p#blargh)", [ "firstp", "ap", "sndp", "en", "sap", "first" ] );
 	} else {
+
 		// Support: IE 11+
 		// IE doesn't support `:not(complex selector)`.
 		assert.ok( "skip", ":not(complex selector) not supported in selector-native" );
@@ -1178,6 +1183,7 @@ QUnit.test( "pseudo - :not", function( assert ) {
 		assert.t( ":not Multiple", "p:not(p,a)", [] );
 		assert.t( ":not Multiple", "p:not(a,p,b)", [] );
 	} else {
+
 		// Support: IE 11+
 		// IE doesn't support `:not(complex selector)`.
 		assert.ok( "skip", ":not(complex selector) not supported in selector-native" );
@@ -1207,6 +1213,7 @@ QUnit.test( "pseudo - :not", function( assert ) {
 	if ( QUnit.jQuerySelectors || !QUnit.isIE ) {
 		assert.t( ":not() Multiple Class", "#foo a:not(.blog.link)", [ "yahoo", "anchor2" ] );
 	} else {
+
 		// Support: IE 11+
 		// IE doesn't support `:not(complex selector)`.
 		assert.ok( "skip", ":not(complex selector) not supported in selector-native" );
@@ -1439,8 +1446,7 @@ QUnit.test( "pseudo - a:(dis|en)abled", function( assert ) {
 	assert.expect( 2 );
 
 	var enabled, disabled,
-		container = jQuery( "<div></div>" ),
+		container = jQuery( "<div></div>" );
-		anchor = jQuery( "<a href='#'>Link</a>" );
 
 	container.appendTo( "#qunit-fixture" );
 
@@ -1754,8 +1760,8 @@ QUnit[ QUnit.jQuerySelectors ? "test" : "skip" ]( "disconnected nodes", function
 QUnit.testUnlessIE( "Shadow DOM nodes supported as root", function( assert ) {
 	assert.expect( 2 );
 
-	var shadowHost = jQuery( "<div></div>" ).appendTo( "#qunit-fixture" )[ 0 ];
+	var shadowHost = jQuery( "<div></div>" ).appendTo( "#qunit-fixture" )[ 0 ],
-	var shadowRoot = shadowHost.attachShadow( { mode: "open" } );
+		shadowRoot = shadowHost.attachShadow( { mode: "open" } );
 
 	shadowRoot.innerHTML = "<div class='vagabond'><p></p></div>";
 	assert.equal( jQuery( shadowRoot ).find( ".vagabond" ).length, 1,
@@ -1767,7 +1773,7 @@ QUnit.testUnlessIE( "Shadow DOM nodes supported as root", function( assert ) {
 testIframe(
 	"attributes - jQuery.attr",
 	"selector/html5_selector.html",
-	function( assert, jQuery, window, document ) {
+	function( assert, jQuery, _window, document ) {
 		assert.expect( 38 );
 
 		/**
@@ -1840,7 +1846,7 @@ testIframe(
 
 		// Enumerated attributes (these are not boolean content attributes)
 		jQuery.expandedEach = jQuery.each;
-		jQuery.expandedEach( [ "draggable", "contenteditable", "aria-disabled" ], function( i, val ) {
+		jQuery.expandedEach( [ "draggable", "contenteditable", "aria-disabled" ], function( _i, val ) {
 			t( "Enumerated attribute", "[" + val + "]", [ "div1" ] );
 		} );
 		t( "Enumerated attribute", "[spellcheck]", [ "span1" ] );
@@ -1984,7 +1990,7 @@ QUnit.test( "uniqueSort()", function( assert ) {
 testIframe(
 	"jQuery.uniqueSort works cross-window (trac-14381)",
 	"selector/mixed_sort.html",
-	function( assert, jQuery, window, document, actual, expected ) {
+	function( assert, _jQuery, _window, _document, actual, expected ) {
 		assert.expect( 1 );
 
 		assert.deepEqual( actual, expected, "Mixed array was sorted correctly" );
@@ -2313,7 +2319,7 @@ QUnit[ QUnit.jQuerySelectors ? "test" : "skip" ]( "jQuery.find.select with pre-c
 		"#qunit-fixture #first",
 		"ol#listWithTabIndex > li[tabindex]",
 		"#liveSpan1"
-	], function( i, selector ) {
+	], function( _i, selector ) {
 		var compiled = jQuery.find.compile( selector );
 		assert.equal( jQuery.find.select( compiled, document ).length,
 			1, "Should match using a compiled selector function" );

test/unit/serialize.js

@@ -5,10 +5,10 @@ QUnit.test( "jQuery.param()", function( assert ) {
 
 	var params;
 
-	params = { "foo":"bar", "baz":42, "quux":"All your base are belong to us" };
+	params = { "foo": "bar", "baz": 42, "quux": "All your base are belong to us" };
 	assert.equal( jQuery.param( params ), "foo=bar&baz=42&quux=All%20your%20base%20are%20belong%20to%20us", "simple" );
 
-	params = { "string":"foo", "null":null, "undefined":undefined };
+	params = { "string": "foo", "null": null, "undefined": undefined };
 	assert.equal( jQuery.param( params ), "string=foo&null=&undefined=", "handle nulls and undefineds properly" );
 
 	params = { "someName": [ 1, 2, 3 ], "regularThing": "blah" };
@@ -23,13 +23,13 @@ QUnit.test( "jQuery.param()", function( assert ) {
 	params = { "foo": { "bar": "baz", "beep": 42, "quux": "All your base are belong to us" } };
 	assert.equal( jQuery.param( params ), "foo%5Bbar%5D=baz&foo%5Bbeep%5D=42&foo%5Bquux%5D=All%20your%20base%20are%20belong%20to%20us", "even more arrays" );
 
-	params = { a:[ 1, 2 ], b:{ c:3, d:[ 4, 5 ], e:{ x:[ 6 ], y:7, z:[ 8, 9 ] }, f:true, g:false, h:undefined }, i:[ 10, 11 ], j:true, k:false, l:[ undefined, 0 ], m:"cowboy hat?" };
+	params = { a: [ 1, 2 ], b: { c: 3, d: [ 4, 5 ], e: { x: [ 6 ], y: 7, z: [ 8, 9 ] }, f: true, g: false, h: undefined }, i: [ 10, 11 ], j: true, k: false, l: [ undefined, 0 ], m: "cowboy hat?" };
 	assert.equal( decodeURIComponent( jQuery.param( params ) ), "a[]=1&a[]=2&b[c]=3&b[d][]=4&b[d][]=5&b[e][x][]=6&b[e][y]=7&b[e][z][]=8&b[e][z][]=9&b[f]=true&b[g]=false&b[h]=&i[]=10&i[]=11&j=true&k=false&l[]=&l[]=0&m=cowboy hat?", "huge structure" );
 
 	params = { "a": [ 0, [ 1, 2 ], [ 3, [ 4, 5 ], [ 6 ] ], { "b": [ 7, [ 8, 9 ], [ { "c": 10, "d": 11 } ], [ [ 12 ] ], [ [ [ 13 ] ] ], { "e": { "f": { "g": [ 14, [ 15 ] ] } } }, 16 ] }, 17 ] };
 	assert.equal( decodeURIComponent( jQuery.param( params ) ), "a[]=0&a[1][]=1&a[1][]=2&a[2][]=3&a[2][1][]=4&a[2][1][]=5&a[2][2][]=6&a[3][b][]=7&a[3][b][1][]=8&a[3][b][1][]=9&a[3][b][2][0][c]=10&a[3][b][2][0][d]=11&a[3][b][3][0][]=12&a[3][b][4][0][0][]=13&a[3][b][5][e][f][g][]=14&a[3][b][5][e][f][g][1][]=15&a[3][b][]=16&a[]=17", "nested arrays" );
 
-	params = { "a":[ 1, 2 ], "b":{ "c":3, "d":[ 4, 5 ], "e":{ "x":[ 6 ], "y":7, "z":[ 8, 9 ] }, "f":true, "g":false, "h":undefined }, "i":[ 10, 11 ], "j":true, "k":false, "l":[ undefined, 0 ], "m":"cowboy hat?" };
+	params = { "a": [ 1, 2 ], "b": { "c": 3, "d": [ 4, 5 ], "e": { "x": [ 6 ], "y": 7, "z": [ 8, 9 ] }, "f": true, "g": false, "h": undefined }, "i": [ 10, 11 ], "j": true, "k": false, "l": [ undefined, 0 ], "m": "cowboy hat?" };
 	assert.equal( jQuery.param( params, true ), "a=1&a=2&b=%5Bobject%20Object%5D&i=10&i=11&j=true&k=false&l=&l=0&m=cowboy%20hat%3F", "huge structure, forced traditional" );
 
 	assert.equal( decodeURIComponent( jQuery.param( { "a": [ 1, 2, 3 ], "b[]": [ 4, 5, 6 ], "c[d]": [ 7, 8, 9 ], "e": { "f": [ 10 ], "g": [ 11, 12 ], "h": 13 } } ) ), "a[]=1&a[]=2&a[]=3&b[]=4&b[]=5&b[]=6&c[d][]=7&c[d][]=8&c[d][]=9&e[f][]=10&e[g][]=11&e[g][]=12&e[h]=13", "Make sure params are not double-encoded." );
@@ -37,7 +37,7 @@ QUnit.test( "jQuery.param()", function( assert ) {
 	// trac-7945
 	assert.equal( jQuery.param( { "jquery": "1.4.2" } ), "jquery=1.4.2", "Check that object with a jQuery property get serialized correctly" );
 
-	params = { "foo":"bar", "baz":42, "quux":"All your base are belong to us" };
+	params = { "foo": "bar", "baz": 42, "quux": "All your base are belong to us" };
 	assert.equal( jQuery.param( params, true ), "foo=bar&baz=42&quux=All%20your%20base%20are%20belong%20to%20us", "simple" );
 
 	params = { "someName": [ 1, 2, 3 ], "regularThing": "blah" };
@@ -46,25 +46,27 @@ QUnit.test( "jQuery.param()", function( assert ) {
 	params = { "foo": [ "a", "b", "c" ] };
 	assert.equal( jQuery.param( params, true ), "foo=a&foo=b&foo=c", "with array of strings" );
 
-	params = { "foo[]":[ "baz", 42, "All your base are belong to us" ] };
+	params = { "foo[]": [ "baz", 42, "All your base are belong to us" ] };
 	assert.equal( jQuery.param( params, true ), "foo%5B%5D=baz&foo%5B%5D=42&foo%5B%5D=All%20your%20base%20are%20belong%20to%20us", "more array" );
 
-	params = { "foo[bar]":"baz", "foo[beep]":42, "foo[quux]":"All your base are belong to us" };
+	params = { "foo[bar]": "baz", "foo[beep]": 42, "foo[quux]": "All your base are belong to us" };
 	assert.equal( jQuery.param( params, true ), "foo%5Bbar%5D=baz&foo%5Bbeep%5D=42&foo%5Bquux%5D=All%20your%20base%20are%20belong%20to%20us", "even more arrays" );
 
-	params = { a:[ 1, 2 ], b:{ c:3, d:[ 4, 5 ], e:{ x:[ 6 ], y:7, z:[ 8, 9 ] }, f:true, g:false, h:undefined }, i:[ 10, 11 ], j:true, k:false, l:[ undefined, 0 ], m:"cowboy hat?" };
+	params = { a: [ 1, 2 ], b: { c: 3, d: [ 4, 5 ], e: { x: [ 6 ], y: 7, z: [ 8, 9 ] }, f: true, g: false, h: undefined }, i: [ 10, 11 ], j: true, k: false, l: [ undefined, 0 ], m: "cowboy hat?" };
 	assert.equal( jQuery.param( params, true ), "a=1&a=2&b=%5Bobject%20Object%5D&i=10&i=11&j=true&k=false&l=&l=0&m=cowboy%20hat%3F", "huge structure" );
 
 	params = { "a": [ 0, [ 1, 2 ], [ 3, [ 4, 5 ], [ 6 ] ], { "b": [ 7, [ 8, 9 ], [ { "c": 10, d: 11 } ], [ [ 12 ] ], [ [ [ 13 ] ] ], { "e": { "f": { "g": [ 14, [ 15 ] ] } } }, 16 ] }, 17 ] };
 	assert.equal( jQuery.param( params, true ), "a=0&a=1%2C2&a=3%2C4%2C5%2C6&a=%5Bobject%20Object%5D&a=17", "nested arrays (not possible when traditional == true)" );
 
-	params = { a:[ 1, 2 ], b:{ c:3, d:[ 4, 5 ], e:{ x:[ 6 ], y:7, z:[ 8, 9 ] }, f:true, g:false, h:undefined }, i:[ 10, 11 ], j:true, k:false, l:[ undefined, 0 ], m:"cowboy hat?" };
+	params = { a: [ 1, 2 ], b: { c: 3, d: [ 4, 5 ], e: { x: [ 6 ], y: 7, z: [ 8, 9 ] }, f: true, g: false, h: undefined }, i: [ 10, 11 ], j: true, k: false, l: [ undefined, 0 ], m: "cowboy hat?" };
 	assert.equal( decodeURIComponent( jQuery.param( params ) ), "a[]=1&a[]=2&b[c]=3&b[d][]=4&b[d][]=5&b[e][x][]=6&b[e][y]=7&b[e][z][]=8&b[e][z][]=9&b[f]=true&b[g]=false&b[h]=&i[]=10&i[]=11&j=true&k=false&l[]=&l[]=0&m=cowboy hat?", "huge structure, forced not traditional" );
 
 	params = { "param1": null };
 	assert.equal( jQuery.param( params ), "param1=", "Make sure that null params aren't traversed." );
 
-	params = { "param1": function() {}, "param2": function() { return null; } };
+	params = { "param1": function() {}, "param2": function() {
+		return null;
+	} };
 	assert.equal( jQuery.param( params, false ), "param1=&param2=", "object with function property that returns null value" );
 
 	params = { "test": { "length": 3, "foo": "bar" } };

test/unit/traversing.js

@@ -310,7 +310,9 @@ QUnit.test( "filter(Function)", function( assert ) {
 		return !jQuery( "a", this ).length;
 	} ).get(), q( "sndp", "first" ), "filter(Function)" );
 
-	assert.deepEqual( jQuery( "#qunit-fixture p" ).filter( function( i, elem ) { return !jQuery( "a", elem ).length; } ).get(), q( "sndp", "first" ), "filter(Function) using arg" );
+	assert.deepEqual( jQuery( "#qunit-fixture p" ).filter( function( i, elem ) {
+		return !jQuery( "a", elem ).length;
+	} ).get(), q( "sndp", "first" ), "filter(Function) using arg" );
 } );
 
 QUnit.test( "filter(Element)", function( assert ) {
@@ -511,7 +513,9 @@ QUnit.test( "not(Element)", function( assert ) {
 QUnit.test( "not(Function)", function( assert ) {
 	assert.expect( 1 );
 
-	assert.deepEqual( jQuery( "#qunit-fixture p" ).not( function() { return jQuery( "a", this ).length; } ).get(), q( "sndp", "first" ), "not(Function)" );
+	assert.deepEqual( jQuery( "#qunit-fixture p" ).not( function() {
+		return jQuery( "a", this ).length;
+	} ).get(), q( "sndp", "first" ), "not(Function)" );
 } );
 
 QUnit.test( "not(Array)", function( assert ) {