README.md

@@ -38,6 +38,10 @@ And much more..
 
 -   [Vue](https://vuejs.org/)
 
+### Module Systems
+
+[Happy DOM](https://github.com/capricorn86/happy-dom) has support for both [ESM](https://nodejs.org/api/esm.html#introduction) and [CommonJS](https://nodejs.org/api/modules.html#modules-commonjs-modules).
+
 # Packages
 
 This repository is a _Monorepo_. Each package lives under `packages/<package>`.
@@ -58,14 +62,6 @@ This package makes it possible to use Happy DOM with [Jest](https://jestjs.io/).
 
 A utility that registers Happy DOM globally, which makes it possible to use Happy DOM for testing in a Node environment.
 
----
-
-### [![Published on npm](https://img.shields.io/npm/v/@happy-dom/server-rendering.svg)](https://www.npmjs.com/package/@happy-dom/server-rendering) [server-rendering](https://github.com/capricorn86/happy-dom/tree/master/packages/server-rendering)
-
-This package has been deprecated.
-
-Happy DOM now supports [Declarative Shadow DOM](https://github.com/capricorn86/happy-dom/tree/master/packages/happy-dom#server-side-rendering-of-web-components) which can be used for server-side rendering of web components.
-
 # Performance
 
 | Operation                            | JSDOM   | Happy DOM |

package.json

@@ -14,26 +14,23 @@
 	},
 	"devDependencies": {
 		"@types/he": "^1.1.2",
-		"@types/jest": "^29.4.0",
 		"@types/node": "^15.6.0",
 		"@typescript-eslint/eslint-plugin": "^5.16.0",
 		"@typescript-eslint/parser": "^5.16.0",
 		"chalk": "^4.1.0",
 		"eslint": "^8.11.0",
 		"eslint-config-prettier": "^8.5.0",
 		"eslint-plugin-filenames": "^1.3.2",
-		"eslint-plugin-import": "^2.25.4",
-		"eslint-plugin-jest": "^26.1.2",
+		"eslint-plugin-import": "^2.27.5",
 		"eslint-plugin-jsdoc": "^38.0.6",
 		"eslint-plugin-json": "^3.1.0",
 		"eslint-plugin-prettier": "^4.0.0",
 		"husky": "2.3.0",
-		"jest": "^29.4.0",
+		"vitest": "^0.32.4",
 		"prettier": "^2.6.0",
 		"semver": "^7.3.5",
-		"ts-jest": "^29.0.5",
 		"turbo": "^1.7.3",
-		"typescript": "^4.6.2"
+		"typescript": "^5.0.4"
 	},
 	"engines": {
 		"node": ">=12.13"

packages/global-registrator/.eslintrc.cjs

@@ -0,0 +1 @@
+module.exports = require('happy-dom/.eslintrc.cjs');

packages/global-registrator/.gitignore

@@ -1,3 +1,4 @@
 node_modules
 tmp
-lib
+lib
+cjs

packages/global-registrator/.npmignore

@@ -1,3 +1,5 @@
 node_modules
 tmp
+test
+.turbo
 npm-shrinkwrap.json

packages/global-registrator/.prettierrc.cjs

@@ -0,0 +1 @@
+module.exports = require('../happy-dom/.prettierrc.cjs');

packages/global-registrator/README.md

@@ -38,6 +38,10 @@ And much more..
 
 - [Vue](https://vuejs.org/)
 
+### Module Systems
+
+[Happy DOM](https://github.com/capricorn86/happy-dom) has support for both [ESM](https://nodejs.org/api/esm.html#introduction) and [CommonJS](https://nodejs.org/api/modules.html#modules-commonjs-modules).
+
 # Installation
 
 ```bash
@@ -74,6 +78,10 @@ GlobalRegistrator.unregister();
 console.log(global.document);
 ```
 
+# Documentation
+
+Read more about how Happy DOM works in our [documentation](https://github.com/capricorn86/happy-dom/wiki).
+
 # Performance
 
 | Operation                            | JSDOM   | Happy DOM |

packages/global-registrator/package.json

@@ -7,6 +7,47 @@
 	"author": "David Ortner",
 	"description": "Use Happy DOM globally in a Node.js environment for testing.",
 	"main": "lib/index.js",
+	"type": "module",
+	"exports": {
+		".": {
+			"import": "./lib/index.js",
+			"require": "./cjs/index.cjs",
+			"default": "./lib/index.js"
+		},
+		"./lib/*.js": {
+			"import": "./lib/*.js",
+			"require": "./cjs/*.cjs",
+			"default": "./lib/*.js"
+		},
+		"./lib/*.ts": {
+			"import": "./lib/*.ts",
+			"require": "./cjs/*.ts",
+			"default": "./lib/*.ts"
+		},
+		"./lib/*.map": {
+			"import": "./lib/*.map",
+			"require": "./cjs/*.map",
+			"default": "./lib/*.map"
+		},
+		"./cjs/*.js": {
+			"import": "./cjs/*.cjs",
+			"require": "./cjs/*.cjs",
+			"default": "./cjs/*.cjs"
+		},
+		"./cjs/*.ts": {
+			"import": "./cjs/*.ts",
+			"require": "./cjs/*.ts",
+			"default": "./cjs/*.ts"
+		},
+		"./cjs/*.map": {
+			"import": "./cjs/*.map",
+			"require": "./cjs/*.map",
+			"default": "./cjs/*.map"
+		},
+		"./src/*.ts": "./src/*.ts",
+		"./package.json": "./package.json",
+		"./.eslintrc": "./.eslintrc.js"
+	},
 	"keywords": [
 		"jsdom",
 		"happy",
@@ -24,11 +65,12 @@
 		"access": "public"
 	},
 	"scripts": {
-		"compile": "tsc",
+		"compile": "tsc && tsc --module CommonJS --outDir cjs && npm run change-cjs-file-extension",
+		"change-cjs-file-extension": "node ../happy-dom/bin/change-file-extension.cjs --dir=./cjs --fromExt=.js --toExt=.cjs",
 		"watch": "npm run compile && tsc -w --preserveWatchOutput",
 		"lint": "eslint --ignore-path .gitignore --max-warnings 0 .",
 		"lint:fix": "eslint --ignore-path .gitignore --max-warnings 0 --fix .",
-		"test": "tsc --project ./test && node ./tmp/react/React.test.js",
+		"test": "tsc --project ./test && node ../happy-dom/bin/change-file-extension.cjs --dir=./tmp --fromExt=.js --toExt=.cjs && node ./tmp/react/React.test.cjs",
 		"test:debug": "tsc --project ./test && node --inspect-brk ./tmp/react/React.test.js"
 	},
 	"dependencies": {
@@ -42,13 +84,12 @@
 		"eslint-config-prettier": "^8.5.0",
 		"eslint-plugin-prettier": "^4.0.0",
 		"eslint-plugin-filenames": "^1.3.2",
-		"eslint-plugin-import": "^2.25.4",
-		"eslint-plugin-jest": "^26.1.2",
+		"eslint-plugin-import": "^2.27.5",
 		"eslint-plugin-jsdoc": "^38.0.6",
 		"eslint-plugin-json": "^3.1.0",
 		"eslint-plugin-turbo": "^0.0.7",
 		"prettier": "^2.6.0",
-		"typescript": "^4.6.2",
+		"typescript": "^5.0.4",
 		"react": "^17.0.2",
 		"react-dom": "^17.0.2"
 	}

packages/global-registrator/src/index.ts

@@ -1,3 +1,3 @@
-import GlobalRegistrator from './GlobalRegistrator';
+import GlobalRegistrator from './GlobalRegistrator.js';
 
 export { GlobalRegistrator };

packages/global-registrator/test/react/React.test.tsx

@@ -1,7 +1,7 @@
-import GlobalRegistrator from '../../lib/GlobalRegistrator';
+import GlobalRegistrator from '../../cjs/GlobalRegistrator.cjs';
 import React from 'react';
 import ReactDOM from 'react-dom';
-import ReactComponent from './ReactComponent';
+import ReactComponent from './ReactComponent.js';
 
 GlobalRegistrator.register();
 

packages/global-registrator/test/tsconfig.json

@@ -5,6 +5,7 @@
 		"rootDir": "../test",
 		"tsBuildInfoFile": "../tmp/.tsbuildinfo-test",
 		"jsx": "react",
+        "module": "CommonJS",
 		"lib": [
 			"es2015",
 			"es2016",

packages/global-registrator/tsconfig.json

@@ -6,8 +6,8 @@
 		"target": "es2020",
 		"declaration": true,
 		"declarationMap": true,
-		"module": "CommonJS",
-		"moduleResolution": "node",
+		"module": "es2020",
+		"moduleResolution": "node16",
 		"esModuleInterop": true,
 		"experimentalDecorators": true,
 		"allowSyntheticDefaultImports": true,
@@ -22,9 +22,6 @@
 		"composite": true,
 		"incremental": true,
 		"jsx": "react",
-		"typeRoots": [
-			"node_modules/@types"
-		],
 		"types": [
 			"node"
 		],

packages/happy-dom/.eslintrc.js → packages/happy-dom/.eslintrc.cjs

@@ -3,7 +3,7 @@ const ERROR = 'error';
 const OFF = 'off';
 
 const COMMON_CONFIG = {
-	plugins: ['turbo', 'jsdoc', 'filenames', 'jest', 'import', 'prettier'],
+	plugins: ['turbo', 'jsdoc', 'filenames', 'import', 'prettier'],
 	extends: ['plugin:@typescript-eslint/recommended', 'prettier', 'plugin:prettier/recommended'],
 	rules: {
 		'prettier/prettier': WARN,
@@ -48,18 +48,6 @@ const COMMON_CONFIG = {
 		'jsdoc/require-returns-description': WARN,
 		'jsdoc/valid-types': WARN,
 		'filenames/match-exported': WARN,
-		'jest/consistent-test-it': [WARN, { fn: 'it', withinDescribe: 'it' }],
-		'jest/valid-title': [
-			WARN,
-			{
-				mustMatch: {
-					// Describe: '^[A-Z][a-zA-Z0-9]+$|^[a-z][a-zA-Z0-9]+\\(\\)$',
-					it: '^[A-Z](.+).$'
-				}
-			}
-		],
-		'jest/prefer-hooks-on-top': WARN,
-		'jest/no-duplicate-hooks': WARN,
 		'no-useless-constructor': WARN,
 		'jsdoc/require-jsdoc': [
 			WARN,
@@ -92,8 +80,7 @@ module.exports = {
 	env: {
 		es6: true,
 		browser: true,
-		node: true,
-		jest: true
+		node: true
 	},
 	overrides: [
 		{
@@ -115,7 +102,7 @@ module.exports = {
 		{
 			files: ['*.json'],
 			plugins: ['json'],
-			extends: ['eslint:recommended', 'plugin:json/recommended', 'plugin:jest/recommended']
+			extends: ['eslint:recommended', 'plugin:json/recommended']
 		},
 		{
 			files: ['*.ts', '*.tsx'],
@@ -153,6 +140,7 @@ module.exports = {
 				'import/named': WARN,
 				'import/no-named-as-default': WARN,
 				'import/no-extraneous-dependencies': WARN,
+				'import/no-absolute-path': WARN,
 				'@typescript-eslint/naming-convention': [
 					WARN,
 					{

packages/happy-dom/.gitignore

@@ -1,4 +1,5 @@
 node_modules
 tmp
 lib
+cjs
 .DS_Store

packages/happy-dom/.npmignore

@@ -1,4 +1,5 @@
 node_modules
 tmp
 test
+.turbo
 npm-shrinkwrap.json

packages/happy-dom/README.md

@@ -36,6 +36,10 @@ And much more..
 
 - [Vue](https://vuejs.org/)
 
+### Module Systems
+
+[Happy DOM](https://github.com/capricorn86/happy-dom) has support for both [ESM](https://nodejs.org/api/esm.html#introduction) and [CommonJS](https://nodejs.org/api/modules.html#modules-commonjs-modules).
+
 # Installation
 
 ```bash
@@ -44,14 +48,16 @@ npm install happy-dom
 
 # Usage
 
-## Basic Usage
-
 A simple example of how you can use Happy DOM.
 
 ```javascript
 import { Window } from 'happy-dom';
 
-const window = new Window();
+const window = new Window({
+	url: 'https://localhost:8080',
+	width: 1024,
+	height: 768
+});
 const document = window.document;
 
 document.body.innerHTML = '<div class="container"></div>';
@@ -65,254 +71,7 @@ container.appendChild(button);
 console.log(document.body.innerHTML);
 ```
 
-## VM Context
-
-The default Window class is a [VM context](https://nodejs.org/api/vm.html#vm_vm_createcontext_sandbox_options). A [VM context](https://nodejs.org/api/vm.html#vm_vm_createcontext_sandbox_options) will execute JavaScript code scoped within the context where the Window instance will be the global object.
-
-```javascript
-import { Window } from 'happy-dom';
-
-const window = new Window({
-	innerWidth: 1024,
-	innerHeight: 768,
-	url: 'http://localhost:8080'
-});
-const document = window.document;
-
-document.write(`
-    <html>
-        <head>
-             <title>Test page</title>
-        </head>
-        <body>
-             <div class="container">
-                  <!–– Content will be added here -->
-             </div>
-            <script>
-                const element = document.createElement('div');
-                const container = document.querySelector('.container');
-                element.innerHTML = 'Test';
-                container.appendChild(element);
-            </script>
-        </body>
-    </html>
-`);
-
-// Will output "Test"
-console.log(document.querySelector('.container div').innerHTML);
-```
-
-## Global Context
-
-Happy DOM exports a class called GlobalWindow, which can be used to run Happy DOM in the global context instead of the default behaviour of running in a [VM context](https://nodejs.org/api/vm.html#vm_vm_createcontext_sandbox_options).
-
-```javascript
-import { Window, GlobalWindow } from 'happy-dom';
-
-const vmWindow = new Window();
-const globalWindow = new GlobalWindow();
-
-// Will output "false"
-console.log(vmWindow.Array === global.Array);
-
-// Will output "true"
-console.log(globalWindow.Array === global.Array);
-
-globalWindow.eval('global.test = 1');
-
-// Will output "1"
-console.log(global.test);
-```
-
-## Server-Side Rendering of Web Components
-
-The example below will show you how to server-side render a page with custom elements (web components) in Happy DOM. In the example we will use a new web feature called [Declarative Shadow DOM](https://chromestatus.com/feature/5191745052606464) to include the shadow roots in the HTML output.
-
-[Declarative Shadow DOM](https://chromestatus.com/feature/5191745052606464) is only supported by Chromium based browsers. Unsupported browsers will safely fallback to being rendered using Javascript.
-
-```javascript
-import { Window } from 'happy-dom';
-
-const window = new Window({
-	innerWidth: 1024,
-	innerHeight: 768,
-	url: 'http://localhost:8080'
-});
-const document = window.document;
-
-document.write(`
-    <html>
-        <head>
-             <title>Test page</title>
-        </head>
-        <body>
-            <div>
-                <my-custom-element>
-                    <span>Slotted content</span>
-                </my-custom-element>
-            </div>
-            <script>
-                class MyCustomElement extends HTMLElement {
-                    constructor() {
-                        super();
-                        this.attachShadow({ mode: 'open' });
-                    }
-
-                    connectedCallback() {
-                        this.shadowRoot.innerHTML = \`
-                            <style>
-                                :host {
-                                    display: inline-block;
-                                    background: red;
-                                }
-                            </style>
-                            <div><slot></slot></div>
-                        \`;
-                    }
-                }
-
-                customElements.define('my-custom-element', MyCustomElement);
-            </script>
-        </body>
-    </html>
-`);
-
-/*
-Will output:
-<my-custom-element>
-    <span>Slotted content</span>
-    <template shadowroot="open">
-        <style>
-            :host {
-                display: inline-block;
-                background: red;
-            }
-        </style>
-        <div><slot></slot></div>
-    </template>
-</my-custom-element>
-*/
-console.log(document.body.querySelector('div').getInnerHTML({ includeShadowRoots: true }));
-```
-
-## Additional Features
-
-**whenAsyncComplete()**
-
-Returns a [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) that is resolved when all async tasks has been completed.
-
-```javascript
-window.happyDOM.whenAsyncComplete().then(() => {
-	// Do something when all async tasks are completed.
-});
-```
-
-**cancelAsync()**
-
-This method will cancel all running async tasks.
-
-```javascript
-window.setTimeout(() => {
-	// This timeout will be canceled
-});
-window.happyDOM.cancelAsync();
-```
-
-**setInnerWidth()**
-
-Sets the property `window.innerWidth` and dispatches a "resize" event.
-
-```javascript
-window.happyDOM.setInnerWidth(1920);
-```
-
-**setInnerHeight()**
-
-Sets the property `window.innerHeight` and dispatches a "resize" event.
-
-```javascript
-window.happyDOM.setInnerHeight(1080);
-```
-
-**setURL()**
-
-Sets the property `window.location.href`.
-
-```javascript
-window.happyDOM.setURL('https://localhost:3000');
-```
-
-## Settings
-
-Settings can be sent to the constructor or by setting them on the "window.happyDOM.settings" property.
-
-Set by constructor:
-
-```javascript
-const window = new Window({
-	innerWidth: 1920,
-	innerHeight: 1080,
-	url: 'https://localhost:8080',
-	settings: {
-		disableJavaScriptFileLoading: true,
-		disableJavaScriptEvaluation: true,
-		disableCSSFileLoading: true,
-		disableIframePageLoading: true,
-		disableComputedStyleRendering: true,
-		enableFileSystemHttpRequests: true,
-        device: {
-            mediaType: 'print',
-            prefersColorScheme = 'dark
-        }
-	}
-});
-```
-
-Set by property:
-
-```javascript
-const window = new Window();
-
-window.happyDOM.settings.disableJavaScriptFileLoading = true;
-window.happyDOM.settings.disableJavaScriptEvaluation = true;
-window.happyDOM.settings.disableCSSFileLoading = true;
-window.happyDOM.settings.disableIframePageLoading = true;
-window.happyDOM.settings.disableComputedStyleRendering = true;
-window.happyDOM.settings.enableFileSystemHttpRequests = true;
-window.happyDOM.settings.device.mediaType = 'print';
-window.happyDOM.settings.device.prefersColorScheme = 'dark';
-```
-
-**disableJavaScriptFileLoading**
-
-Set it to "true" to disable JavaScript file loading. Defaults to "false".
-
-**disableJavaScriptEvaluation**
-
-Set it to "true" to completely disable JavaScript evaluation. Defaults to "false".
-
-**disableCSSFileLoading**
-
-Set it to "true" to disable CSS file loading in HTMLLinkElement. Defaults to "false".
-
-**disableIframePageLoading**
-
-Set it to "true" to disable page loading in HTMLIFrameElement. Defaults to "false".
-
-**disableComputedStyleRendering**
-Set it to "true" to disable the simulation of rendering when calculating computed style. The rendering process will convert values such as "rem", "em", "cm" etc. to pixels. However, it is currently very limited and will therefore not give the same result as the browser. Defaults to "false".
-
-**enableFileSystemHttpRequests**
-
-Set it to "true" to enable file system HTTP requests using XMLHttpRequest. Defaults to "false".
-
-**device.mediaType**
-
-Used by media queries. Acceptable values are "screen" or "print". Defaults to "screen".
-
-**device.prefersColorScheme**
-
-Used by media queries. Acceptable values are "light" or "dark". Defaults to "dark".
+[Read more in our documentation](https://github.com/capricorn86/happy-dom/wiki)
 
 # Performance
 
@@ -334,6 +93,10 @@ Used by media queries. Acceptable values are "light" or "dark". Defaults to "dar
 
 Happy DOM provide with a package called [@happy-dom/jest-environment](https://github.com/capricorn86/happy-dom/tree/master/packages/jest-environment) that makes it possible to use Happy DOM with [Jest](https://jestjs.io/).
 
+# Vitest
+
+[Vitest](https://github.com/vitest-dev/vitest) supports Happy DOM out of the box.
+
 # Global Registration
 
 Happy DOM provide with a package called [@happy-dom/global-registrator](https://github.com/capricorn86/happy-dom/tree/master/packages/global-registrator) that can register Happy DOM globally. It makes it possible to use Happy DOM for testing in a Node environment.

packages/happy-dom/bin/change-file-extension.cjs

@@ -0,0 +1,101 @@
+/* eslint-disable no-console*/
+/* eslint-disable @typescript-eslint/no-var-requires*/
+
+const Path = require('path');
+const FS = require('fs');
+
+process.on('unhandledRejection', (reason) => {
+	console.error(reason);
+	process.exit(1);
+});
+
+main();
+
+function getArguments() {
+	const args = {
+		dir: null,
+		fromExt: null,
+		toExt: null
+	};
+
+	for (const arg of process.argv) {
+		if (arg.startsWith('--dir=')) {
+			args.dir = arg.split('=')[1];
+		} else if (arg.startsWith('--fromExt=')) {
+			args.fromExt = arg.split('=')[1];
+		} else if (arg.startsWith('--toExt=')) {
+			args.toExt = arg.split('=')[1];
+		}
+	}
+
+	return args;
+}
+
+async function readDirectory(directory) {
+	const resolvedDirectory = Path.resolve(directory);
+	const files = await FS.promises.readdir(resolvedDirectory);
+	const statsPromises = [];
+	let allFiles = [];
+
+	for (const file of files) {
+		const filePath = Path.join(resolvedDirectory, file);
+		statsPromises.push(
+			FS.promises.stat(filePath).then((stats) => {
+				if (stats.isDirectory()) {
+					return readDirectory(filePath).then((files) => (allFiles = allFiles.concat(files)));
+				}
+				allFiles.push(filePath);
+			})
+		);
+	}
+
+	await Promise.all(statsPromises);
+
+	return allFiles;
+}
+
+async function renameFiles(files, args) {
+	const newFiles = files.map((file) => ({
+		oldPath: file,
+		newPath: file.replace(args.fromExt, args.toExt)
+	}));
+	const writePromises = [];
+
+	for (const file of newFiles) {
+		writePromises.push(
+			FS.promises.readFile(file.oldPath).then((content) => {
+				debugger;
+				return FS.promises
+					.writeFile(
+						file.newPath,
+						content
+							.toString()
+							.replace(
+								new RegExp(`${args.fromExt.replace('.', '\\.')}\\.map`, 'g'),
+								`${args.toExt}.map`
+							)
+							.replace(
+								new RegExp(`${args.fromExt.replace('.', '\\.')}(["'])`, 'g'),
+								`${args.toExt}$1`
+							)
+					)
+					.then(() => {
+						if (file.oldPath !== file.newPath) {
+							return FS.promises.unlink(file.oldPath);
+						}
+					});
+			})
+		);
+	}
+
+	await Promise.all(writePromises);
+}
+
+async function main() {
+	const args = getArguments();
+	if (!args.dir || !args.fromExt || !args.toExt) {
+		throw new Error('Invalid arguments');
+	}
+	const files = await readDirectory(args.dir);
+	await renameFiles(files, args);
+}

packages/happy-dom/package.json

@@ -7,6 +7,48 @@
 	"author": "David Ortner",
 	"description": "Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.",
 	"main": "lib/index.js",
+	"type": "module",
+	"exports": {
+		".": {
+			"import": "./lib/index.js",
+			"require": "./cjs/index.cjs",
+			"default": "./lib/index.js"
+		},
+		"./lib/*.js": {
+			"import": "./lib/*.js",
+			"require": "./cjs/*.cjs",
+			"default": "./lib/*.js"
+		},
+		"./lib/*.ts": {
+			"import": "./lib/*.ts",
+			"require": "./cjs/*.ts",
+			"default": "./lib/*.ts"
+		},
+		"./lib/*.map": {
+			"import": "./lib/*.map",
+			"require": "./cjs/*.map",
+			"default": "./lib/*.map"
+		},
+		"./cjs/*.js": {
+			"import": "./cjs/*.cjs",
+			"require": "./cjs/*.cjs",
+			"default": "./cjs/*.cjs"
+		},
+		"./cjs/*.ts": {
+			"import": "./cjs/*.ts",
+			"require": "./cjs/*.ts",
+			"default": "./cjs/*.ts"
+		},
+		"./cjs/*.map": {
+			"import": "./cjs/*.map",
+			"require": "./cjs/*.map",
+			"default": "./cjs/*.map"
+		},
+		"./src/*.ts": "./src/*.ts",
+		"./package.json": "./package.json",
+		"./.eslintrc.cjs": "./.eslintrc.cjs",
+		"./.prettierrc.cjs": "./.prettierrc.cjs"
+	},
 	"keywords": [
 		"jsdom",
 		"dom",
@@ -23,28 +65,14 @@
 		"access": "public"
 	},
 	"scripts": {
-		"compile": "tsc",
+		"compile": "tsc && tsc --module CommonJS --outDir cjs && npm run change-cjs-file-extension",
+		"change-cjs-file-extension": "node ./bin/change-file-extension.cjs --dir=./cjs --fromExt=.js --toExt=.cjs",
 		"watch": "tsc -w --preserveWatchOutput",
 		"lint": "eslint --ignore-path .gitignore --max-warnings 0 .",
 		"lint:fix": "eslint --ignore-path .gitignore --max-warnings 0 --fix .",
-		"test": "jest --setupFilesAfterEnv ./test/setup.js",
-		"test:coverage": "jest --setupFilesAfterEnv ./test/setup.js --collectCoverage",
-		"test:watch": "jest --setupFilesAfterEnv ./test/setup.js --watch",
-		"test:debug": "node --inspect-brk ../../node_modules/.bin/jest --setupFilesAfterEnv ./test/setup.js --runInBand"
-	},
-	"jest": {
-		"transform": {
-			"^.+\\.ts?$": [
-				"ts-jest",
-				{
-					"tsconfig": "./test/tsconfig.json"
-				}
-			]
-		},
-		"testMatch": [
-			"**/test/**/*.test.ts"
-		],
-		"testEnvironment": "node"
+		"test": "vitest run",
+		"test:watch": "vitest",
+		"test:debug": "vitest --inspect-brk --threads false"
 	},
 	"dependencies": {
 		"css.escape": "^1.5.1",
@@ -55,23 +83,20 @@
 		"iconv-lite": "^0.6.3"
 	},
 	"devDependencies": {
-		"@types/jest": "^29.4.0",
 		"@types/node": "^15.6.0",
 		"@types/node-fetch": "^2.6.1",
 		"@typescript-eslint/eslint-plugin": "^5.16.0",
 		"@typescript-eslint/parser": "^5.16.0",
 		"eslint": "^8.11.0",
 		"eslint-config-prettier": "^8.5.0",
 		"eslint-plugin-filenames": "^1.3.2",
-		"eslint-plugin-import": "^2.25.4",
-		"eslint-plugin-jest": "^26.1.2",
+		"eslint-plugin-import": "^2.27.5",
 		"eslint-plugin-jsdoc": "^38.0.6",
 		"eslint-plugin-json": "^3.1.0",
 		"eslint-plugin-prettier": "^4.0.0",
 		"eslint-plugin-turbo": "^0.0.7",
-		"jest": "^29.4.0",
+		"vitest": "^0.32.4",
 		"prettier": "^2.6.0",
-		"ts-jest": "^29.0.5",
-		"typescript": "^4.6.2"
+		"typescript": "^5.0.4"
 	}
 }

packages/happy-dom/src/base64/Base64.ts

@@ -1,5 +1,5 @@
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
 
 const BASE64_CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
 

packages/happy-dom/src/config/ElementTag.ts

@@ -1,27 +1,27 @@
-import HTMLElement from '../nodes/html-element/HTMLElement';
-import HTMLTemplateElement from '../nodes/html-template-element/HTMLTemplateElement';
-import HTMLFormElement from '../nodes/html-form-element/HTMLFormElement';
-import HTMLInputElement from '../nodes/html-input-element/HTMLInputElement';
-import HTMLTextAreaElement from '../nodes/html-text-area-element/HTMLTextAreaElement';
-import SVGSVGElement from '../nodes/svg-element/SVGSVGElement';
-import SVGElement from '../nodes/svg-element/SVGElement';
-import HTMLScriptElement from '../nodes/html-script-element/HTMLScriptElement';
-import HTMLImageElement from '../nodes/html-image-element/HTMLImageElement';
-import HTMLLinkElement from '../nodes/html-link-element/HTMLLinkElement';
-import HTMLStyleElement from '../nodes/html-style-element/HTMLStyleElement';
-import HTMLLabelElement from '../nodes/html-label-element/HTMLLabelElement';
-import HTMLSlotElement from '../nodes/html-slot-element/HTMLSlotElement';
-import HTMLMetaElement from '../nodes/html-meta-element/HTMLMetaElement';
-import HTMLBaseElement from '../nodes/html-base-element/HTMLBaseElement';
-import HTMLSelectElement from '../nodes/html-select-element/HTMLSelectElement';
-import HTMLOptionElement from '../nodes/html-option-element/HTMLOptionElement';
-import HTMLOptGroupElement from '../nodes/html-opt-group-element/HTMLOptGroupElement';
-import HTMLDialogElement from '../nodes/html-dialog-element/HTMLDialogElement';
-import HTMLButtonElement from '../nodes/html-button-element/HTMLButtonElement';
-import HTMLAudioElement from '../nodes/html-audio-element/HTMLAudioElement';
-import HTMLVideoElement from '../nodes/html-video-element/HTMLVideoElement';
-import HTMLAnchorElement from '../nodes/html-anchor-element/HTMLAnchorElement';
-import HTMLIFrameElement from '../nodes/html-iframe-element/HTMLIFrameElement';
+import HTMLElement from '../nodes/html-element/HTMLElement.js';
+import HTMLTemplateElement from '../nodes/html-template-element/HTMLTemplateElement.js';
+import HTMLFormElement from '../nodes/html-form-element/HTMLFormElement.js';
+import HTMLInputElement from '../nodes/html-input-element/HTMLInputElement.js';
+import HTMLTextAreaElement from '../nodes/html-text-area-element/HTMLTextAreaElement.js';
+import SVGSVGElement from '../nodes/svg-element/SVGSVGElement.js';
+import SVGElement from '../nodes/svg-element/SVGElement.js';
+import HTMLScriptElement from '../nodes/html-script-element/HTMLScriptElement.js';
+import HTMLImageElement from '../nodes/html-image-element/HTMLImageElement.js';
+import HTMLLinkElement from '../nodes/html-link-element/HTMLLinkElement.js';
+import HTMLStyleElement from '../nodes/html-style-element/HTMLStyleElement.js';
+import HTMLLabelElement from '../nodes/html-label-element/HTMLLabelElement.js';
+import HTMLSlotElement from '../nodes/html-slot-element/HTMLSlotElement.js';
+import HTMLMetaElement from '../nodes/html-meta-element/HTMLMetaElement.js';
+import HTMLBaseElement from '../nodes/html-base-element/HTMLBaseElement.js';
+import HTMLSelectElement from '../nodes/html-select-element/HTMLSelectElement.js';
+import HTMLOptionElement from '../nodes/html-option-element/HTMLOptionElement.js';
+import HTMLOptGroupElement from '../nodes/html-opt-group-element/HTMLOptGroupElement.js';
+import HTMLDialogElement from '../nodes/html-dialog-element/HTMLDialogElement.js';
+import HTMLButtonElement from '../nodes/html-button-element/HTMLButtonElement.js';
+import HTMLAudioElement from '../nodes/html-audio-element/HTMLAudioElement.js';
+import HTMLVideoElement from '../nodes/html-video-element/HTMLVideoElement.js';
+import HTMLAnchorElement from '../nodes/html-anchor-element/HTMLAnchorElement.js';
+import HTMLIFrameElement from '../nodes/html-iframe-element/HTMLIFrameElement.js';
 
 export default {
 	A: HTMLAnchorElement,

packages/happy-dom/src/cookie/Cookie.ts

@@ -1,6 +1,6 @@
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
-import CookieSameSiteEnum from './CookieSameSiteEnum';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
+import CookieSameSiteEnum from './CookieSameSiteEnum.js';
 import { URL } from 'url';
 
 /**

packages/happy-dom/src/cookie/CookieJar.ts

@@ -1,5 +1,5 @@
-import Cookie from './Cookie';
-import CookieSameSiteEnum from './CookieSameSiteEnum';
+import Cookie from './Cookie.js';
+import CookieSameSiteEnum from './CookieSameSiteEnum.js';
 import { URL } from 'url';
 
 /**

packages/happy-dom/src/css/CSS.ts

@@ -1,5 +1,5 @@
-import CSSUnitValue from './CSSUnitValue';
-import CSSUnits from './CSSUnits';
+import CSSUnitValue from './CSSUnitValue.js';
+import CSSUnits from './CSSUnits.js';
 import CSSEscape from 'css.escape';
 
 /**

packages/happy-dom/src/css/CSSParser.ts

@@ -1,11 +1,11 @@
-import CSSRule from './CSSRule';
-import CSSStyleSheet from './CSSStyleSheet';
-import CSSStyleRule from './rules/CSSStyleRule';
-import CSSKeyframeRule from './rules/CSSKeyframeRule';
-import CSSKeyframesRule from './rules/CSSKeyframesRule';
-import CSSMediaRule from './rules/CSSMediaRule';
-import CSSContainerRule from './rules/CSSContainerRule';
-import CSSSupportsRule from './rules/CSSSupportsRule';
+import CSSRule from './CSSRule.js';
+import CSSStyleSheet from './CSSStyleSheet.js';
+import CSSStyleRule from './rules/CSSStyleRule.js';
+import CSSKeyframeRule from './rules/CSSKeyframeRule.js';
+import CSSKeyframesRule from './rules/CSSKeyframesRule.js';
+import CSSMediaRule from './rules/CSSMediaRule.js';
+import CSSContainerRule from './rules/CSSContainerRule.js';
+import CSSSupportsRule from './rules/CSSSupportsRule.js';
 
 const COMMENT_REGEXP = /\/\*[\s\S]*?\*\//gm;
 

packages/happy-dom/src/css/CSSRule.ts

@@ -1,5 +1,5 @@
-import CSSStyleSheet from './CSSStyleSheet';
-import CSSRuleTypeEnum from './CSSRuleTypeEnum';
+import CSSStyleSheet from './CSSStyleSheet.js';
+import CSSRuleTypeEnum from './CSSRuleTypeEnum.js';
 
 /**
  * CSSRule interface.

packages/happy-dom/src/css/CSSStyleSheet.ts

@@ -1,8 +1,8 @@
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
-import CSSParser from './CSSParser';
-import CSSRule from './CSSRule';
-import MediaList from './MediaList';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
+import CSSParser from './CSSParser.js';
+import CSSRule from './CSSRule.js';
+import MediaList from './MediaList.js';
 
 /**
  * CSS StyleSheet.

packages/happy-dom/src/css/CSSUnitValue.ts

@@ -1,4 +1,4 @@
-import CSSUnits from './CSSUnits';
+import CSSUnits from './CSSUnits.js';
 
 /**
  * CSS unit value.

packages/happy-dom/src/css/declaration/AbstractCSSStyleDeclaration.ts

@@ -1,10 +1,10 @@
-import IElement from '../../nodes/element/IElement';
-import Attr from '../../nodes/attr/Attr';
-import CSSRule from '../CSSRule';
-import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum';
-import DOMException from '../../exception/DOMException';
-import CSSStyleDeclarationElementStyle from './element-style/CSSStyleDeclarationElementStyle';
-import CSSStyleDeclarationPropertyManager from './property-manager/CSSStyleDeclarationPropertyManager';
+import IElement from '../../nodes/element/IElement.js';
+import Attr from '../../nodes/attr/Attr.js';
+import CSSRule from '../CSSRule.js';
+import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum.js';
+import DOMException from '../../exception/DOMException.js';
+import CSSStyleDeclarationElementStyle from './element-style/CSSStyleDeclarationElementStyle.js';
+import CSSStyleDeclarationPropertyManager from './property-manager/CSSStyleDeclarationPropertyManager.js';
 
 /**
  * CSS Style Declaration.

packages/happy-dom/src/css/declaration/CSSStyleDeclaration.ts

@@ -1,4 +1,4 @@
-import AbstractCSSStyleDeclaration from './AbstractCSSStyleDeclaration';
+import AbstractCSSStyleDeclaration from './AbstractCSSStyleDeclaration.js';
 
 /* eslint-disable jsdoc/require-jsdoc */
 

packages/happy-dom/src/css/declaration/element-style/CSSStyleDeclarationElementStyle.ts

@@ -1,21 +1,21 @@
-import IShadowRoot from '../../../nodes/shadow-root/IShadowRoot';
-import IElement from '../../../nodes/element/IElement';
-import IDocument from '../../../nodes/document/IDocument';
-import IHTMLStyleElement from '../../../nodes/html-style-element/IHTMLStyleElement';
-import INodeList from '../../../nodes/node/INodeList';
-import CSSStyleDeclarationPropertyManager from '../property-manager/CSSStyleDeclarationPropertyManager';
-import NodeTypeEnum from '../../../nodes/node/NodeTypeEnum';
-import CSSRuleTypeEnum from '../../CSSRuleTypeEnum';
-import CSSMediaRule from '../../rules/CSSMediaRule';
-import CSSRule from '../../CSSRule';
-import CSSStyleRule from '../../rules/CSSStyleRule';
-import CSSStyleDeclarationElementDefaultCSS from './config/CSSStyleDeclarationElementDefaultCSS';
-import CSSStyleDeclarationElementInheritedProperties from './config/CSSStyleDeclarationElementInheritedProperties';
-import CSSStyleDeclarationElementMeasurementProperties from './config/CSSStyleDeclarationElementMeasurementProperties';
-import CSSStyleDeclarationCSSParser from '../css-parser/CSSStyleDeclarationCSSParser';
-import QuerySelector from '../../../query-selector/QuerySelector';
-import CSSMeasurementConverter from '../measurement-converter/CSSMeasurementConverter';
-import MediaQueryList from '../../../match-media/MediaQueryList';
+import IShadowRoot from '../../../nodes/shadow-root/IShadowRoot.js';
+import IElement from '../../../nodes/element/IElement.js';
+import IDocument from '../../../nodes/document/IDocument.js';
+import IHTMLStyleElement from '../../../nodes/html-style-element/IHTMLStyleElement.js';
+import INodeList from '../../../nodes/node/INodeList.js';
+import CSSStyleDeclarationPropertyManager from '../property-manager/CSSStyleDeclarationPropertyManager.js';
+import NodeTypeEnum from '../../../nodes/node/NodeTypeEnum.js';
+import CSSRuleTypeEnum from '../../CSSRuleTypeEnum.js';
+import CSSMediaRule from '../../rules/CSSMediaRule.js';
+import CSSRule from '../../CSSRule.js';
+import CSSStyleRule from '../../rules/CSSStyleRule.js';
+import CSSStyleDeclarationElementDefaultCSS from './config/CSSStyleDeclarationElementDefaultCSS.js';
+import CSSStyleDeclarationElementInheritedProperties from './config/CSSStyleDeclarationElementInheritedProperties.js';
+import CSSStyleDeclarationElementMeasurementProperties from './config/CSSStyleDeclarationElementMeasurementProperties.js';
+import CSSStyleDeclarationCSSParser from '../css-parser/CSSStyleDeclarationCSSParser.js';
+import QuerySelector from '../../../query-selector/QuerySelector.js';
+import CSSMeasurementConverter from '../measurement-converter/CSSMeasurementConverter.js';
+import MediaQueryList from '../../../match-media/MediaQueryList.js';
 
 const CSS_VARIABLE_REGEXP = /var\( *(--[^) ]+)\)/g;
 const CSS_MEASUREMENT_REGEXP = /[0-9.]+(px|rem|em|vw|vh|%|vmin|vmax|cm|mm|in|pt|pc|Q)/g;

packages/happy-dom/src/css/declaration/measurement-converter/CSSMeasurementConverter.ts

@@ -1,4 +1,4 @@
-import IWindow from '../../../window/IWindow';
+import IWindow from '../../../window/IWindow.js';
 
 /**
  * CSS Measurement Converter.

packages/happy-dom/src/css/declaration/property-manager/CSSStyleDeclarationPropertyGetParser.ts

@@ -1,5 +1,5 @@
-import CSSStyleDeclarationValueParser from './CSSStyleDeclarationValueParser';
-import ICSSStyleDeclarationPropertyValue from './ICSSStyleDeclarationPropertyValue';
+import CSSStyleDeclarationValueParser from './CSSStyleDeclarationValueParser.js';
+import ICSSStyleDeclarationPropertyValue from './ICSSStyleDeclarationPropertyValue.js';
 
 /**
  * Computed style property parser.

packages/happy-dom/src/css/declaration/property-manager/CSSStyleDeclarationPropertyManager.ts

@@ -1,8 +1,8 @@
-import ICSSStyleDeclarationPropertyValue from './ICSSStyleDeclarationPropertyValue';
-import CSSStyleDeclarationPropertySetParser from './CSSStyleDeclarationPropertySetParser';
-import CSSStyleDeclarationValueParser from './CSSStyleDeclarationValueParser';
-import CSSStyleDeclarationPropertyGetParser from './CSSStyleDeclarationPropertyGetParser';
-import CSSStyleDeclarationCSSParser from '../css-parser/CSSStyleDeclarationCSSParser';
+import ICSSStyleDeclarationPropertyValue from './ICSSStyleDeclarationPropertyValue.js';
+import CSSStyleDeclarationPropertySetParser from './CSSStyleDeclarationPropertySetParser.js';
+import CSSStyleDeclarationValueParser from './CSSStyleDeclarationValueParser.js';
+import CSSStyleDeclarationPropertyGetParser from './CSSStyleDeclarationPropertyGetParser.js';
+import CSSStyleDeclarationCSSParser from '../css-parser/CSSStyleDeclarationCSSParser.js';
 
 const TO_STRING_SHORTHAND_PROPERTIES = [
 	['margin'],

packages/happy-dom/src/css/declaration/property-manager/CSSStyleDeclarationPropertySetParser.ts

@@ -1,5 +1,5 @@
-import CSSStyleDeclarationValueParser from './CSSStyleDeclarationValueParser';
-import ICSSStyleDeclarationPropertyValue from './ICSSStyleDeclarationPropertyValue';
+import CSSStyleDeclarationValueParser from './CSSStyleDeclarationValueParser.js';
+import ICSSStyleDeclarationPropertyValue from './ICSSStyleDeclarationPropertyValue.js';
 
 const RECT_REGEXP = /^rect\((.*)\)$/i;
 const BORDER_STYLE = [

packages/happy-dom/src/css/rules/CSSContainerRule.ts

@@ -1,4 +1,4 @@
-import CSSRule from '../CSSRule';
+import CSSRule from '../CSSRule.js';
 
 /**
  * CSSRule interface.

packages/happy-dom/src/css/rules/CSSFontFaceRule.ts

@@ -1,5 +1,5 @@
-import CSSRule from '../CSSRule';
-import CSSStyleDeclaration from '../declaration/CSSStyleDeclaration';
+import CSSRule from '../CSSRule.js';
+import CSSStyleDeclaration from '../declaration/CSSStyleDeclaration.js';
 
 /**
  * CSSRule interface.

packages/happy-dom/src/css/rules/CSSKeyframeRule.ts

@@ -1,5 +1,5 @@
-import CSSRule from '../CSSRule';
-import CSSStyleDeclaration from '../declaration/CSSStyleDeclaration';
+import CSSRule from '../CSSRule.js';
+import CSSStyleDeclaration from '../declaration/CSSStyleDeclaration.js';
 
 /**
  * CSSRule interface.

packages/happy-dom/src/css/rules/CSSKeyframesRule.ts

@@ -1,6 +1,6 @@
-import CSSRule from '../CSSRule';
-import CSSStyleDeclaration from '../declaration/CSSStyleDeclaration';
-import CSSKeyframeRule from './CSSKeyframeRule';
+import CSSRule from '../CSSRule.js';
+import CSSStyleDeclaration from '../declaration/CSSStyleDeclaration.js';
+import CSSKeyframeRule from './CSSKeyframeRule.js';
 
 const CSS_RULE_REGEXP = /([^{]+){([^}]+)}/;
 

packages/happy-dom/src/css/rules/CSSMediaRule.ts

@@ -1,5 +1,5 @@
-import CSSRule from '../CSSRule';
-import MediaList from '../MediaList';
+import CSSRule from '../CSSRule.js';
+import MediaList from '../MediaList.js';
 
 /**
  * CSSRule interface.

packages/happy-dom/src/css/rules/CSSStyleRule.ts

@@ -1,5 +1,5 @@
-import CSSRule from '../CSSRule';
-import CSSStyleDeclaration from '../declaration/CSSStyleDeclaration';
+import CSSRule from '../CSSRule.js';
+import CSSStyleDeclaration from '../declaration/CSSStyleDeclaration.js';
 
 /**
  * CSSRule interface.

packages/happy-dom/src/css/rules/CSSSupportsRule.ts

@@ -1,4 +1,4 @@
-import CSSRule from '../CSSRule';
+import CSSRule from '../CSSRule.js';
 
 /**
  * CSSRule interface.

packages/happy-dom/src/custom-element/CustomElementRegistry.ts

@@ -1,6 +1,6 @@
-import DOMException from '../exception/DOMException';
-import HTMLElement from '../nodes/html-element/HTMLElement';
-import Node from '../nodes/node/Node';
+import DOMException from '../exception/DOMException.js';
+import HTMLElement from '../nodes/html-element/HTMLElement.js';
+import Node from '../nodes/node/Node.js';
 
 /**
  * Custom elements registry.

packages/happy-dom/src/dom-implementation/DOMImplementation.ts

@@ -1,5 +1,5 @@
-import DocumentType from '../nodes/document-type/DocumentType';
-import IDocument from '../nodes/document/IDocument';
+import DocumentType from '../nodes/document-type/DocumentType.js';
+import IDocument from '../nodes/document/IDocument.js';
 
 /**
  * The DOMImplementation interface represents an object providing methods which are not dependent on any particular document. Such an object is returned by the.

packages/happy-dom/src/dom-parser/DOMParser.ts

@@ -1,11 +1,11 @@
-import IDocument from '../nodes/document/IDocument';
-import XMLParser from '../xml-parser/XMLParser';
-import Node from '../nodes/node/Node';
-import DOMException from '../exception/DOMException';
-import HTMLDocument from '../nodes/html-document/HTMLDocument';
-import XMLDocument from '../nodes/xml-document/XMLDocument';
-import SVGDocument from '../nodes/svg-document/SVGDocument';
-import IWindow from '../window/IWindow';
+import IDocument from '../nodes/document/IDocument.js';
+import XMLParser from '../xml-parser/XMLParser.js';
+import Node from '../nodes/node/Node.js';
+import DOMException from '../exception/DOMException.js';
+import HTMLDocument from '../nodes/html-document/HTMLDocument.js';
+import XMLDocument from '../nodes/xml-document/XMLDocument.js';
+import SVGDocument from '../nodes/svg-document/SVGDocument.js';
+import IWindow from '../window/IWindow.js';
 
 /**
  * DOM parser.

packages/happy-dom/src/dom-token-list/DOMTokenList.ts

@@ -1,5 +1,5 @@
-import Element from '../nodes/element/Element';
-import IDOMTokenList from './IDOMTokenList';
+import Element from '../nodes/element/Element.js';
+import IDOMTokenList from './IDOMTokenList.js';
 
 /**
  * DOM Token List.

packages/happy-dom/src/event/DataTransfer.ts

@@ -1,5 +1,5 @@
-import File from '../file/File';
-import DataTransferItemList from './DataTransferItemList';
+import File from '../file/File.js';
+import DataTransferItemList from './DataTransferItemList.js';
 
 /**
  *

packages/happy-dom/src/event/DataTransferItem.ts

@@ -1,4 +1,4 @@
-import File from '../file/File';
+import File from '../file/File.js';
 
 /**
  *

packages/happy-dom/src/event/DataTransferItemList.ts

@@ -1,5 +1,5 @@
-import File from '../file/File';
-import DataTransferItem from './DataTransferItem';
+import File from '../file/File.js';
+import DataTransferItem from './DataTransferItem.js';
 
 /**
  *

packages/happy-dom/src/event/Event.ts

@@ -1,12 +1,12 @@
-import IEventInit from './IEventInit';
-import INode from '../nodes/node/INode';
-import IWindow from '../window/IWindow';
-import IShadowRoot from '../nodes/shadow-root/IShadowRoot';
-import IEventTarget from './IEventTarget';
-import NodeTypeEnum from '../nodes/node/NodeTypeEnum';
+import IEventInit from './IEventInit.js';
+import INode from '../nodes/node/INode.js';
+import IWindow from '../window/IWindow.js';
+import IShadowRoot from '../nodes/shadow-root/IShadowRoot.js';
+import IEventTarget from './IEventTarget.js';
+import NodeTypeEnum from '../nodes/node/NodeTypeEnum.js';
 import { performance } from 'perf_hooks';
-import EventPhaseEnum from './EventPhaseEnum';
-import IDocument from '../nodes/document/IDocument';
+import EventPhaseEnum from './EventPhaseEnum.js';
+import IDocument from '../nodes/document/IDocument.js';
 
 /**
  * Event.

packages/happy-dom/src/event/EventTarget.ts

@@ -1,11 +1,11 @@
-import IEventListener from './IEventListener';
-import Event from './Event';
-import IEventTarget from './IEventTarget';
-import IEventListenerOptions from './IEventListenerOptions';
-import EventPhaseEnum from './EventPhaseEnum';
-import INode from '../nodes/node/INode';
-import IDocument from '../nodes/document/IDocument';
-import IWindow from '../window/IWindow';
+import IEventListener from './IEventListener.js';
+import Event from './Event.js';
+import IEventTarget from './IEventTarget.js';
+import IEventListenerOptions from './IEventListenerOptions.js';
+import EventPhaseEnum from './EventPhaseEnum.js';
+import INode from '../nodes/node/INode.js';
+import IDocument from '../nodes/document/IDocument.js';
+import IWindow from '../window/IWindow.js';
 
 /**
  * Handles events.

packages/happy-dom/src/event/IEventListener.ts

@@ -1,4 +1,4 @@
-import Event from './Event';
+import Event from './Event.js';
 
 /**
  * Event listener.

packages/happy-dom/src/event/IEventTarget.ts

@@ -1,6 +1,6 @@
-import IEventListener from './IEventListener';
-import Event from './Event';
-import IEventListenerOptions from './IEventListenerOptions';
+import IEventListener from './IEventListener.js';
+import Event from './Event.js';
+import IEventListenerOptions from './IEventListenerOptions.js';
 
 /**
  * Handles events.

packages/happy-dom/src/event/IMessagePort.ts

@@ -1,4 +1,4 @@
-import IEventTarget from './IEventTarget';
+import IEventTarget from './IEventTarget.js';
 
 /**
  * Message port.

packages/happy-dom/src/event/IUIEventInit.ts

@@ -1,5 +1,5 @@
-import IWindow from '../window/IWindow';
-import IEventInit from './IEventInit';
+import IWindow from '../window/IWindow.js';
+import IEventInit from './IEventInit.js';
 
 export default interface IUIEventInit extends IEventInit {
 	detail?: number;

packages/happy-dom/src/event/MessagePort.ts

@@ -1,5 +1,5 @@
-import EventTarget from './EventTarget';
-import IMessagePort from './IMessagePort';
+import EventTarget from './EventTarget.js';
+import IMessagePort from './IMessagePort.js';
 
 /**
  * Message port.

packages/happy-dom/src/event/UIEvent.ts

@@ -1,6 +1,6 @@
-import IWindow from '../window/IWindow';
-import Event from './Event';
-import IUIEventInit from './IUIEventInit';
+import IWindow from '../window/IWindow.js';
+import Event from './Event.js';
+import IUIEventInit from './IUIEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/AnimationEvent.ts

@@ -1,5 +1,5 @@
-import Event from '../Event';
-import IAnimationEventInit from './IAnimationEventInit';
+import Event from '../Event.js';
+import IAnimationEventInit from './IAnimationEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/CustomEvent.ts

@@ -1,5 +1,5 @@
-import Event from '../Event';
-import ICustomEventInit from './ICustomEventInit';
+import Event from '../Event.js';
+import ICustomEventInit from './ICustomEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/ErrorEvent.ts

@@ -1,5 +1,5 @@
-import UIEvent from '../UIEvent';
-import IErrorEventInit from './IErrorEventInit';
+import UIEvent from '../UIEvent.js';
+import IErrorEventInit from './IErrorEventInit.js';
 
 /**
  *
@@ -9,7 +9,7 @@ export default class ErrorEvent extends UIEvent {
 	public readonly filename: string = '';
 	public readonly lineno: number = 0;
 	public readonly colno: number = 0;
-	public readonly error: object = null;
+	public readonly error: Error | null = null;
 
 	/**
 	 * Constructor.

packages/happy-dom/src/event/events/FocusEvent.ts

@@ -1,6 +1,6 @@
-import UIEvent from '../UIEvent';
-import EventTarget from '../EventTarget';
-import IFocusEventInit from './IFocusEventInit';
+import UIEvent from '../UIEvent.js';
+import EventTarget from '../EventTarget.js';
+import IFocusEventInit from './IFocusEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/IAnimationEventInit.ts

@@ -1,4 +1,4 @@
-import IEventInit from '../IEventInit';
+import IEventInit from '../IEventInit.js';
 
 export default interface IAnimationEventInit extends IEventInit {
 	animationName?: string;

packages/happy-dom/src/event/events/ICustomEventInit.ts

@@ -1,5 +1,5 @@
-import IEventInit from '../IEventInit';
+import IEventInit from '../IEventInit.js';
 
 export default interface ICustomEventInit extends IEventInit {
-	detail?: object;
+	detail?: object | null;
 }

packages/happy-dom/src/event/events/IErrorEventInit.ts

@@ -1,9 +1,9 @@
-import IEventInit from '../IEventInit';
+import IEventInit from '../IEventInit.js';
 
 export default interface IErrorEventInit extends IEventInit {
 	message?: string;
 	filename?: string;
 	lineno?: number;
 	colno?: number;
-	error?: object;
+	error?: Error;
 }

packages/happy-dom/src/event/events/IFocusEventInit.ts

@@ -1,5 +1,5 @@
-import EventTarget from '../EventTarget';
-import IUIEventInit from '../IUIEventInit';
+import EventTarget from '../EventTarget.js';
+import IUIEventInit from '../IUIEventInit.js';
 
 export default interface IFocusEventInit extends IUIEventInit {
 	relatedTarget?: EventTarget;

packages/happy-dom/src/event/events/IInputEventInit.ts

@@ -1,5 +1,5 @@
-import DataTransfer from '../DataTransfer';
-import IUIEventInit from '../IUIEventInit';
+import DataTransfer from '../DataTransfer.js';
+import IUIEventInit from '../IUIEventInit.js';
 
 export default interface IInputEventInit extends IUIEventInit {
 	inputType?: string;

packages/happy-dom/src/event/events/IKeyboardEventInit.ts

@@ -1,4 +1,4 @@
-import IUIEventInit from '../IUIEventInit';
+import IUIEventInit from '../IUIEventInit.js';
 
 export default interface IKeyboardEventInit extends IUIEventInit {
 	key?: string;

packages/happy-dom/src/event/events/IMediaQueryListInit.ts

@@ -1,4 +1,4 @@
-import IEventInit from '../IEventInit';
+import IEventInit from '../IEventInit.js';
 
 export default interface IMediaQueryListInit extends IEventInit {
 	matches?: boolean;

packages/happy-dom/src/event/events/IMessageEventInit.ts

@@ -1,6 +1,6 @@
-import IEventInit from '../IEventInit';
-import IWindow from '../../window/IWindow';
-import IMessagePort from '../IMessagePort';
+import IEventInit from '../IEventInit.js';
+import IWindow from '../../window/IWindow.js';
+import IMessagePort from '../IMessagePort.js';
 
 export default interface IMessageEventInit extends IEventInit {
 	data?: unknown | null;

packages/happy-dom/src/event/events/IMouseEventInit.ts

@@ -1,5 +1,5 @@
-import EventTarget from '../EventTarget';
-import IUIEventInit from '../IUIEventInit';
+import EventTarget from '../EventTarget.js';
+import IUIEventInit from '../IUIEventInit.js';
 
 export default interface IMouseEventInit extends IUIEventInit {
 	screenX?: number;

packages/happy-dom/src/event/events/IPointerEventInit.ts

@@ -1,4 +1,4 @@
-import IMouseEventInit from './IMouseEventInit';
+import IMouseEventInit from './IMouseEventInit.js';
 
 export default interface IPointerEventInit extends IMouseEventInit {
 	pointerId?: number;

packages/happy-dom/src/event/events/IProgressEventInit.ts

@@ -1,4 +1,4 @@
-import IEventInit from '../IEventInit';
+import IEventInit from '../IEventInit.js';
 
 export default interface IProgressEventInit extends IEventInit {
 	lengthComputable?: boolean;

packages/happy-dom/src/event/events/IStorageEventInit.ts

@@ -1,5 +1,5 @@
-import IEventInit from '../IEventInit';
-import Storage from '../../storage/Storage';
+import IEventInit from '../IEventInit.js';
+import Storage from '../../storage/Storage.js';
 
 export default interface IStorageEventInit extends IEventInit {
 	key?: string;

packages/happy-dom/src/event/events/ISubmitEventInit.ts

@@ -1,5 +1,5 @@
-import IHTMLElement from '../../nodes/html-element/IHTMLElement';
-import IEventInit from '../IEventInit';
+import IHTMLElement from '../../nodes/html-element/IHTMLElement.js';
+import IEventInit from '../IEventInit.js';
 
 export default interface ISubmitEventInit extends IEventInit {
 	submitter?: IHTMLElement;

packages/happy-dom/src/event/events/IWheelEventInit.ts

@@ -1,4 +1,4 @@
-import IUIEventInit from '../IUIEventInit';
+import IUIEventInit from '../IUIEventInit.js';
 
 export default interface IWheelEventInit extends IUIEventInit {
 	deltaX?: number;

packages/happy-dom/src/event/events/InputEvent.ts

@@ -1,6 +1,6 @@
-import DataTransfer from '../DataTransfer';
-import UIEvent from '../UIEvent';
-import IInputEventInit from './IInputEventInit';
+import DataTransfer from '../DataTransfer.js';
+import UIEvent from '../UIEvent.js';
+import IInputEventInit from './IInputEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/KeyboardEvent.ts

@@ -1,5 +1,5 @@
-import UIEvent from '../UIEvent';
-import IKeyboardEventInit from './IKeyboardEventInit';
+import UIEvent from '../UIEvent.js';
+import IKeyboardEventInit from './IKeyboardEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/MediaQueryListEvent.ts

@@ -1,5 +1,5 @@
-import Event from '../Event';
-import IMediaQueryListInit from './IMediaQueryListInit';
+import Event from '../Event.js';
+import IMediaQueryListInit from './IMediaQueryListInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/MessageEvent.ts

@@ -1,7 +1,7 @@
-import IWindow from '../../window/IWindow';
-import Event from '../Event';
-import IMessagePort from '../IMessagePort';
-import IMessageEventInit from './IMessageEventInit';
+import IWindow from '../../window/IWindow.js';
+import Event from '../Event.js';
+import IMessagePort from '../IMessagePort.js';
+import IMessageEventInit from './IMessageEventInit.js';
 
 /**
  * Message event.

packages/happy-dom/src/event/events/MouseEvent.ts

@@ -1,6 +1,6 @@
-import UIEvent from '../UIEvent';
-import EventTarget from '../EventTarget';
-import IMouseEventInit from './IMouseEventInit';
+import UIEvent from '../UIEvent.js';
+import EventTarget from '../EventTarget.js';
+import IMouseEventInit from './IMouseEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/PointerEvent.ts

@@ -1,5 +1,5 @@
-import MouseEvent from './MouseEvent';
-import IPointerEventInit from './IPointerEventInit';
+import MouseEvent from './MouseEvent.js';
+import IPointerEventInit from './IPointerEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/ProgressEvent.ts

@@ -1,5 +1,5 @@
-import Event from '../Event';
-import IProgressEventInit from './IProgressEventInit';
+import Event from '../Event.js';
+import IProgressEventInit from './IProgressEventInit.js';
 
 /**
  *

packages/happy-dom/src/event/events/StorageEvent.ts

@@ -1,6 +1,6 @@
-import Event from '../Event';
-import IStorageEventInit from './IStorageEventInit';
-import Storage from '../../storage/Storage';
+import Event from '../Event.js';
+import IStorageEventInit from './IStorageEventInit.js';
+import Storage from '../../storage/Storage.js';
 
 /**
  *

packages/happy-dom/src/event/events/SubmitEvent.ts

@@ -1,6 +1,6 @@
-import Event from '../Event';
-import ISubmitEventInit from './ISubmitEventInit';
-import IHTMLElement from '../../nodes/html-element/IHTMLElement';
+import Event from '../Event.js';
+import ISubmitEventInit from './ISubmitEventInit.js';
+import IHTMLElement from '../../nodes/html-element/IHTMLElement.js';
 
 /**
  * An event triggered by form submit buttons.

packages/happy-dom/src/event/events/WheelEvent.ts

@@ -1,5 +1,5 @@
-import UIEvent from '../UIEvent';
-import IWheelEventInit from './IWheelEventInit';
+import UIEvent from '../UIEvent.js';
+import IWheelEventInit from './IWheelEventInit.js';
 
 /**
  *

packages/happy-dom/src/exception/DOMException.ts

@@ -1,4 +1,4 @@
-import DOMExceptionNameEnum from './DOMExceptionNameEnum';
+import DOMExceptionNameEnum from './DOMExceptionNameEnum.js';
 
 /**
  * DOM Exception.

packages/happy-dom/src/fetch/AbortController.ts

@@ -1,4 +1,4 @@
-import AbortSignal from './AbortSignal';
+import AbortSignal from './AbortSignal.js';
 
 /**
  * AbortController.

packages/happy-dom/src/fetch/AbortSignal.ts

@@ -1,5 +1,5 @@
-import EventTarget from '../event/EventTarget';
-import Event from '../event/Event';
+import EventTarget from '../event/EventTarget.js';
+import Event from '../event/Event.js';
 
 /**
  * AbortSignal.

packages/happy-dom/src/fetch/Fetch.ts

@@ -1,22 +1,22 @@
-import IRequestInit from './types/IRequestInit';
-import IDocument from '../nodes/document/IDocument';
-import IResponse from './types/IResponse';
-import Request from './Request';
-import IRequestInfo from './types/IRequestInfo';
-import Headers from './Headers';
-import FetchRequestReferrerUtility from './utilities/FetchRequestReferrerUtility';
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
-import Response from './Response';
+import IRequestInit from './types/IRequestInit.js';
+import IDocument from '../nodes/document/IDocument.js';
+import IResponse from './types/IResponse.js';
+import Request from './Request.js';
+import IRequestInfo from './types/IRequestInfo.js';
+import Headers from './Headers.js';
+import FetchRequestReferrerUtility from './utilities/FetchRequestReferrerUtility.js';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
+import Response from './Response.js';
 import HTTP, { IncomingMessage } from 'http';
 import HTTPS from 'https';
 import Zlib from 'zlib';
 import { URL } from 'url';
 import { Socket } from 'net';
 import Stream from 'stream';
-import DataURIParser from './data-uri/DataURIParser';
-import FetchCORSUtility from './utilities/FetchCORSUtility';
-import CookieJar from '../cookie/CookieJar';
+import DataURIParser from './data-uri/DataURIParser.js';
+import FetchCORSUtility from './utilities/FetchCORSUtility.js';
+import CookieJar from '../cookie/CookieJar.js';
 
 const SUPPORTED_SCHEMAS = ['data:', 'http:', 'https:'];
 const REDIRECT_STATUS_CODES = [301, 302, 303, 307, 308];
@@ -195,6 +195,7 @@ export default class Fetch {
 	 */
 	private onError(error: Error): void {
 		this.finalizeRequest();
+		this.ownerDocument.defaultView.console.error(error);
 		this.reject(
 			new DOMException(
 				`Fetch to "${this.request.url}" failed. Error: ${error.message}`,

packages/happy-dom/src/fetch/Headers.ts

@@ -1,7 +1,7 @@
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
-import IHeaders from './types/IHeaders';
-import IHeadersInit from './types/IHeadersInit';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
+import IHeaders from './types/IHeaders.js';
+import IHeadersInit from './types/IHeadersInit.js';
 
 /**
  * Fetch headers.

packages/happy-dom/src/fetch/Request.ts

@@ -1,25 +1,25 @@
-import IBlob from '../file/IBlob';
-import IDocument from '../nodes/document/IDocument';
-import IRequestInit from './types/IRequestInit';
+import IBlob from '../file/IBlob.js';
+import IDocument from '../nodes/document/IDocument.js';
+import IRequestInit from './types/IRequestInit.js';
 import { URL } from 'url';
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
-import IRequestInfo from './types/IRequestInfo';
-import IRequest from './types/IRequest';
-import Headers from './Headers';
-import FetchBodyUtility from './utilities/FetchBodyUtility';
-import AbortSignal from './AbortSignal';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
+import IRequestInfo from './types/IRequestInfo.js';
+import IRequest from './types/IRequest.js';
+import Headers from './Headers.js';
+import FetchBodyUtility from './utilities/FetchBodyUtility.js';
+import AbortSignal from './AbortSignal.js';
 import Stream from 'stream';
-import Blob from '../file/Blob';
+import Blob from '../file/Blob.js';
 import { TextDecoder } from 'util';
-import FetchRequestValidationUtility from './utilities/FetchRequestValidationUtility';
-import IRequestReferrerPolicy from './types/IRequestReferrerPolicy';
-import IRequestRedirect from './types/IRequestRedirect';
-import FetchRequestReferrerUtility from './utilities/FetchRequestReferrerUtility';
-import FetchRequestHeaderUtility from './utilities/FetchRequestHeaderUtility';
-import IRequestCredentials from './types/IRequestCredentials';
-import FormData from '../form-data/FormData';
-import MultipartFormDataParser from './multipart/MultipartFormDataParser';
+import FetchRequestValidationUtility from './utilities/FetchRequestValidationUtility.js';
+import IRequestReferrerPolicy from './types/IRequestReferrerPolicy.js';
+import IRequestRedirect from './types/IRequestRedirect.js';
+import FetchRequestReferrerUtility from './utilities/FetchRequestReferrerUtility.js';
+import FetchRequestHeaderUtility from './utilities/FetchRequestHeaderUtility.js';
+import IRequestCredentials from './types/IRequestCredentials.js';
+import FormData from '../form-data/FormData.js';
+import MultipartFormDataParser from './multipart/MultipartFormDataParser.js';
 
 /**
  * Fetch request.

packages/happy-dom/src/fetch/ResourceFetch.ts

@@ -1,5 +1,5 @@
-import DOMException from '../exception/DOMException';
-import IDocument from '../nodes/document/IDocument';
+import DOMException from '../exception/DOMException.js';
+import IDocument from '../nodes/document/IDocument.js';
 import { URL } from 'url';
 
 /**

packages/happy-dom/src/fetch/Response.ts

@@ -1,19 +1,19 @@
-import IResponse from './types/IResponse';
-import IBlob from '../file/IBlob';
-import IDocument from '../nodes/document/IDocument';
-import IResponseInit from './types/IResponseInit';
-import IResponseBody from './types/IResponseBody';
-import Headers from './Headers';
-import IHeaders from './types/IHeaders';
+import IResponse from './types/IResponse.js';
+import IBlob from '../file/IBlob.js';
+import IDocument from '../nodes/document/IDocument.js';
+import IResponseInit from './types/IResponseInit.js';
+import IResponseBody from './types/IResponseBody.js';
+import Headers from './Headers.js';
+import IHeaders from './types/IHeaders.js';
 import { URL, URLSearchParams } from 'url';
-import Blob from '../file/Blob';
+import Blob from '../file/Blob.js';
 import Stream from 'stream';
-import FormData from '../form-data/FormData';
-import FetchBodyUtility from './utilities/FetchBodyUtility';
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
+import FormData from '../form-data/FormData.js';
+import FetchBodyUtility from './utilities/FetchBodyUtility.js';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
 import { TextDecoder } from 'util';
-import MultipartFormDataParser from './multipart/MultipartFormDataParser';
+import MultipartFormDataParser from './multipart/MultipartFormDataParser.js';
 
 const REDIRECT_STATUS_CODES = [301, 302, 303, 307, 308];
 

packages/happy-dom/src/fetch/multipart/MultipartFormDataParser.ts

@@ -1,8 +1,8 @@
-import FormData from '../../form-data/FormData';
+import FormData from '../../form-data/FormData.js';
 import Stream from 'stream';
-import MultipartReader from './MultipartReader';
-import DOMException from '../../exception/DOMException';
-import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum';
+import MultipartReader from './MultipartReader.js';
+import DOMException from '../../exception/DOMException.js';
+import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum.js';
 
 /**
  * Multipart form data factory.

packages/happy-dom/src/fetch/multipart/MultipartReader.ts

@@ -1,7 +1,7 @@
-import DOMException from '../../exception/DOMException';
-import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum';
-import File from '../../file/File';
-import FormData from '../../form-data/FormData';
+import DOMException from '../../exception/DOMException.js';
+import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum.js';
+import File from '../../file/File.js';
+import FormData from '../../form-data/FormData.js';
 
 enum MultiparParserStateEnum {
 	boundary = 0,

packages/happy-dom/src/fetch/types/IHeadersInit.ts

@@ -1,4 +1,4 @@
-import IHeaders from './IHeaders';
+import IHeaders from './IHeaders.js';
 
 type IHeadersInit = string[][] | { [key: string]: string } | IHeaders;
 

packages/happy-dom/src/fetch/types/IRequest.ts

@@ -1,11 +1,11 @@
-import IHeaders from './IHeaders';
-import IBlob from '../../file/IBlob';
-import AbortSignal from '../AbortSignal';
+import IHeaders from './IHeaders.js';
+import IBlob from '../../file/IBlob.js';
+import AbortSignal from '../AbortSignal.js';
 import Stream from 'stream';
-import IRequestReferrerPolicy from './IRequestReferrerPolicy';
-import IRequestRedirect from './IRequestRedirect';
-import IRequestCredentials from './IRequestCredentials';
-import FormData from '../../form-data/FormData';
+import IRequestReferrerPolicy from './IRequestReferrerPolicy.js';
+import IRequestRedirect from './IRequestRedirect.js';
+import IRequestCredentials from './IRequestCredentials.js';
+import FormData from '../../form-data/FormData.js';
 
 /**
  * Fetch request.

packages/happy-dom/src/fetch/types/IRequestBody.ts

@@ -1,6 +1,6 @@
 import { URLSearchParams } from 'url';
-import FormData from '../../form-data/FormData';
-import Blob from '../../file/Blob';
+import FormData from '../../form-data/FormData.js';
+import Blob from '../../file/Blob.js';
 
 type IRequestBody =
 	| ArrayBuffer

packages/happy-dom/src/fetch/types/IRequestInfo.ts

@@ -1,5 +1,5 @@
 import { URL } from 'url';
-import IRequest from './IRequest';
+import IRequest from './IRequest.js';
 
 type IRequestInfo = IRequest | string | URL;
 

packages/happy-dom/src/fetch/types/IRequestInit.ts

@@ -1,10 +1,10 @@
-import IHeadersInit from './IHeadersInit';
-import AbortSignal from '../AbortSignal';
+import IHeadersInit from './IHeadersInit.js';
+import AbortSignal from '../AbortSignal.js';
 import { URL } from 'url';
-import IRequestReferrerPolicy from './IRequestReferrerPolicy';
-import IRequestRedirect from './IRequestRedirect';
-import IRequestBody from './IRequestBody';
-import IRequestCredentials from './IRequestCredentials';
+import IRequestReferrerPolicy from './IRequestReferrerPolicy.js';
+import IRequestRedirect from './IRequestRedirect.js';
+import IRequestBody from './IRequestBody.js';
+import IRequestCredentials from './IRequestCredentials.js';
 
 /**
  * Fetch request init.

packages/happy-dom/src/fetch/types/IResponse.ts

@@ -1,5 +1,5 @@
-import IHeaders from './IHeaders';
-import IBlob from 'src/file/IBlob';
+import IHeaders from './IHeaders.js';
+import IBlob from '../../file/IBlob.js';
 import Stream from 'stream';
 
 /**

packages/happy-dom/src/fetch/types/IResponseBody.ts

@@ -1,6 +1,6 @@
 import { URLSearchParams } from 'url';
-import FormData from '../../form-data/FormData';
-import Blob from '../../file/Blob';
+import FormData from '../../form-data/FormData.js';
+import Blob from '../../file/Blob.js';
 
 type IResponseBody =
 	| ArrayBuffer

packages/happy-dom/src/fetch/types/IResponseInit.ts

@@ -1,4 +1,4 @@
-import IHeadersInit from './IHeadersInit';
+import IHeadersInit from './IHeadersInit.js';
 
 /**
  * Response init.

packages/happy-dom/src/fetch/utilities/FetchBodyUtility.ts

@@ -1,13 +1,13 @@
-import MultipartFormDataParser from '../multipart/MultipartFormDataParser';
+import MultipartFormDataParser from '../multipart/MultipartFormDataParser.js';
 import Stream from 'stream';
 import { URLSearchParams } from 'url';
-import FormData from '../../form-data/FormData';
-import Blob from '../../file/Blob';
-import DOMException from '../../exception/DOMException';
-import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum';
-import IRequestBody from '../types/IRequestBody';
-import IResponseBody from '../types/IResponseBody';
-import Request from '../Request';
+import FormData from '../../form-data/FormData.js';
+import Blob from '../../file/Blob.js';
+import DOMException from '../../exception/DOMException.js';
+import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum.js';
+import IRequestBody from '../types/IRequestBody.js';
+import IResponseBody from '../types/IResponseBody.js';
+import Request from '../Request.js';
 
 /**
  * Fetch body utility.

packages/happy-dom/src/fetch/utilities/FetchRequestHeaderUtility.ts

@@ -1,5 +1,5 @@
-import Headers from '../Headers';
-import IHeaders from '../types/IHeaders';
+import Headers from '../Headers.js';
+import IHeaders from '../types/IHeaders.js';
 
 const FORBIDDEN_HEADER_NAMES = [
 	'accept-charset',

packages/happy-dom/src/fetch/utilities/FetchRequestReferrerUtility.ts

@@ -1,9 +1,9 @@
 import { URL } from 'url';
-import IRequest from '../types/IRequest';
-import IDocument from '../../nodes/document/IDocument';
+import IRequest from '../types/IRequest.js';
+import IDocument from '../../nodes/document/IDocument.js';
 import { isIP } from 'net';
-import Headers from '../Headers';
-import IRequestReferrerPolicy from '../types/IRequestReferrerPolicy';
+import Headers from '../Headers.js';
+import IRequestReferrerPolicy from '../types/IRequestReferrerPolicy.js';
 
 const REQUEST_REFERRER_UNSUPPORTED_PROTOCOL_REGEXP = /^(about|blob|data):$/;
 const REFERRER_POLICIES: IRequestReferrerPolicy[] = [

packages/happy-dom/src/fetch/utilities/FetchRequestValidationUtility.ts

@@ -1,9 +1,9 @@
-import DOMException from '../../exception/DOMException';
-import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum';
-import IRequestReferrerPolicy from '../types/IRequestReferrerPolicy';
-import IRequestRedirect from '../types/IRequestRedirect';
+import DOMException from '../../exception/DOMException.js';
+import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum.js';
+import IRequestReferrerPolicy from '../types/IRequestReferrerPolicy.js';
+import IRequestRedirect from '../types/IRequestRedirect.js';
 import { URL } from 'url';
-import IRequest from '../types/IRequest';
+import IRequest from '../types/IRequest.js';
 
 const VALID_REFERRER_POLICIES = [
 	'',

packages/happy-dom/src/file/Blob.ts

@@ -1,4 +1,4 @@
-import IBlob from './IBlob';
+import IBlob from './IBlob.js';
 
 /**
  * Reference:

packages/happy-dom/src/file/File.ts

@@ -1,4 +1,4 @@
-import Blob from './Blob';
+import Blob from './Blob.js';
 
 /**
  * Reference:

packages/happy-dom/src/file/FileReader.ts

@@ -1,14 +1,14 @@
 import WhatwgMIMEType from 'whatwg-mimetype';
 import WhatwgEncoding from 'whatwg-encoding';
-import IDocument from '../nodes/document/IDocument';
-import ProgressEvent from '../event/events/ProgressEvent';
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
-import Blob from './Blob';
-import FileReaderReadyStateEnum from './FileReaderReadyStateEnum';
-import FileReaderFormatEnum from './FileReaderFormatEnum';
-import EventTarget from '../event/EventTarget';
-import FileReaderEventTypeEnum from './FileReaderEventTypeEnum';
+import IDocument from '../nodes/document/IDocument.js';
+import ProgressEvent from '../event/events/ProgressEvent.js';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
+import Blob from './Blob.js';
+import FileReaderReadyStateEnum from './FileReaderReadyStateEnum.js';
+import FileReaderFormatEnum from './FileReaderFormatEnum.js';
+import EventTarget from '../event/EventTarget.js';
+import FileReaderEventTypeEnum from './FileReaderEventTypeEnum.js';
 
 /**
  * Reference:

packages/happy-dom/src/form-data/FormData.ts

@@ -1,9 +1,9 @@
-import Blob from '../file/Blob';
-import File from '../file/File';
-import IHTMLInputElement from '../nodes/html-input-element/IHTMLInputElement';
-import IHTMLFormElement from '../nodes/html-form-element/IHTMLFormElement';
-import HTMLFormControlsCollection from '../nodes/html-form-element/HTMLFormControlsCollection';
-import RadioNodeList from '../nodes/html-form-element/RadioNodeList';
+import Blob from '../file/Blob.js';
+import File from '../file/File.js';
+import IHTMLInputElement from '../nodes/html-input-element/IHTMLInputElement.js';
+import IHTMLFormElement from '../nodes/html-form-element/IHTMLFormElement.js';
+import HTMLFormControlsCollection from '../nodes/html-form-element/HTMLFormControlsCollection.js';
+import RadioNodeList from '../nodes/html-form-element/RadioNodeList.js';
 
 type FormDataEntry = {
 	name: string;

packages/happy-dom/src/history/History.ts

@@ -1,4 +1,4 @@
-import HistoryScrollRestorationEnum from './HistoryScrollRestorationEnum';
+import HistoryScrollRestorationEnum from './HistoryScrollRestorationEnum.js';
 
 /**
  * History API.

packages/happy-dom/src/location/Location.ts

@@ -1,6 +1,6 @@
 import { URL } from 'url';
-import DOMException from '../exception/DOMException';
-import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum';
+import DOMException from '../exception/DOMException.js';
+import DOMExceptionNameEnum from '../exception/DOMExceptionNameEnum.js';
 
 /**
  *

packages/happy-dom/src/match-media/MediaQueryItem.ts

@@ -1,8 +1,8 @@
-import CSSMeasurementConverter from '../css/declaration/measurement-converter/CSSMeasurementConverter';
-import IWindow from '../window/IWindow';
-import IMediaQueryRange from './IMediaQueryRange';
-import IMediaQueryRule from './IMediaQueryRule';
-import MediaQueryTypeEnum from './MediaQueryTypeEnum';
+import CSSMeasurementConverter from '../css/declaration/measurement-converter/CSSMeasurementConverter.js';
+import IWindow from '../window/IWindow.js';
+import IMediaQueryRange from './IMediaQueryRange.js';
+import IMediaQueryRule from './IMediaQueryRule.js';
+import MediaQueryTypeEnum from './MediaQueryTypeEnum.js';
 
 /**
  * Media query this.

packages/happy-dom/src/match-media/MediaQueryList.ts

@@ -1,10 +1,10 @@
-import EventTarget from '../event/EventTarget';
-import Event from '../event/Event';
-import IWindow from '../window/IWindow';
-import IEventListener from '../event/IEventListener';
-import MediaQueryListEvent from '../event/events/MediaQueryListEvent';
-import IMediaQueryItem from './MediaQueryItem';
-import MediaQueryParser from './MediaQueryParser';
+import EventTarget from '../event/EventTarget.js';
+import Event from '../event/Event.js';
+import IWindow from '../window/IWindow.js';
+import IEventListener from '../event/IEventListener.js';
+import MediaQueryListEvent from '../event/events/MediaQueryListEvent.js';
+import IMediaQueryItem from './MediaQueryItem.js';
+import MediaQueryParser from './MediaQueryParser.js';
 
 /**
  * Media Query List.

packages/happy-dom/src/match-media/MediaQueryParser.ts

@@ -1,6 +1,6 @@
-import MediaQueryItem from './MediaQueryItem';
-import MediaQueryTypeEnum from './MediaQueryTypeEnum';
-import IWindow from '../window/IWindow';
+import MediaQueryItem from './MediaQueryItem.js';
+import MediaQueryTypeEnum from './MediaQueryTypeEnum.js';
+import IWindow from '../window/IWindow.js';
 
 /**
  * Media query RegExp.

packages/happy-dom/src/mutation-observer/MutationListener.ts

@@ -1,5 +1,5 @@
-import IMutationObserverInit from './IMutationObserverInit';
-import MutationRecord from './MutationRecord';
+import IMutationObserverInit from './IMutationObserverInit.js';
+import MutationRecord from './MutationRecord.js';
 
 /**
  * MutationObserverListener is a model for what to listen for on a Node.

packages/happy-dom/src/mutation-observer/MutationObserver.ts

@@ -1,9 +1,9 @@
-import DOMException from '../exception/DOMException';
-import INode from '../nodes/node/INode';
-import Node from '../nodes/node/Node';
-import IMutationObserverInit from './IMutationObserverInit';
-import MutationObserverListener from './MutationListener';
-import MutationRecord from './MutationRecord';
+import DOMException from '../exception/DOMException.js';
+import INode from '../nodes/node/INode.js';
+import Node from '../nodes/node/Node.js';
+import IMutationObserverInit from './IMutationObserverInit.js';
+import MutationObserverListener from './MutationListener.js';
+import MutationRecord from './MutationRecord.js';
 
 /**
  * The MutationObserver interface provides the ability to watch for changes being made to the DOM tree.

packages/happy-dom/src/mutation-observer/MutationRecord.ts

@@ -1,4 +1,4 @@
-import INode from '../nodes/node/INode';
+import INode from '../nodes/node/INode.js';
 
 /**
  * MutationRecord is a model for a mutation.

packages/happy-dom/src/named-node-map/INamedNodeMap.ts

@@ -1,4 +1,4 @@
-import IAttr from '../nodes/attr/IAttr';
+import IAttr from '../nodes/attr/IAttr.js';
 
 /**
  * NamedNodeMap.

packages/happy-dom/src/named-node-map/NamedNodeMap.ts

@@ -1,6 +1,6 @@
-import type Element from '../nodes/element/Element';
-import IAttr from '../nodes/attr/IAttr';
-import INamedNodeMap from './INamedNodeMap';
+import type Element from '../nodes/element/Element.js';
+import IAttr from '../nodes/attr/IAttr.js';
+import INamedNodeMap from './INamedNodeMap.js';
 
 /**
  * NamedNodeMap.

packages/happy-dom/src/navigator/MimeType.ts

@@ -1,4 +1,4 @@
-import Plugin from './Plugin';
+import Plugin from './Plugin.js';
 
 /**
  * MimeType.

packages/happy-dom/src/navigator/MimeTypeArray.ts

@@ -1,4 +1,4 @@
-import MimeType from './MimeType';
+import MimeType from './MimeType.js';
 
 /**
  * MimeTypeArray.

packages/happy-dom/src/navigator/Navigator.ts

@@ -1,5 +1,5 @@
-import MimeTypeArray from './MimeTypeArray';
-import PluginArray from './PluginArray';
+import MimeTypeArray from './MimeTypeArray.js';
+import PluginArray from './PluginArray.js';
 
 /**
  * Browser Navigator API.

packages/happy-dom/src/navigator/Plugin.ts

@@ -1,4 +1,4 @@
-import MimeType from './MimeType';
+import MimeType from './MimeType.js';
 
 /**
  * Plugin.

packages/happy-dom/src/navigator/PluginArray.ts

@@ -1,4 +1,4 @@
-import Plugin from './Plugin';
+import Plugin from './Plugin.js';
 
 /**
  * PluginArray.

packages/happy-dom/src/nodes/attr/Attr.ts

@@ -1,6 +1,6 @@
-import IElement from '../element/IElement';
-import Node from '../node/Node';
-import IAttr from './IAttr';
+import IElement from '../element/IElement.js';
+import Node from '../node/Node.js';
+import IAttr from './IAttr.js';
 
 /**
  * Attribute node interface.

packages/happy-dom/src/nodes/attr/IAttr.ts

@@ -1,5 +1,5 @@
-import IElement from '../element/IElement';
-import INode from './../node/INode';
+import IElement from '../element/IElement.js';
+import INode from './../node/INode.js';
 
 /**
  * Attr.

packages/happy-dom/src/nodes/character-data/CharacterData.ts

@@ -1,11 +1,11 @@
-import Node from '../node/Node';
-import CharacterDataUtility from './CharacterDataUtility';
-import ICharacterData from './ICharacterData';
-import IElement from '../element/IElement';
-import NonDocumentChildNodeUtility from '../child-node/NonDocumentChildNodeUtility';
-import ChildNodeUtility from '../child-node/ChildNodeUtility';
-import MutationRecord from '../../mutation-observer/MutationRecord';
-import MutationTypeEnum from '../../mutation-observer/MutationTypeEnum';
+import Node from '../node/Node.js';
+import CharacterDataUtility from './CharacterDataUtility.js';
+import ICharacterData from './ICharacterData.js';
+import IElement from '../element/IElement.js';
+import NonDocumentChildNodeUtility from '../child-node/NonDocumentChildNodeUtility.js';
+import ChildNodeUtility from '../child-node/ChildNodeUtility.js';
+import MutationRecord from '../../mutation-observer/MutationRecord.js';
+import MutationTypeEnum from '../../mutation-observer/MutationTypeEnum.js';
 
 /**
  * Character data base class.

packages/happy-dom/src/nodes/character-data/CharacterDataUtility.ts

@@ -1,4 +1,4 @@
-import ICharacterData from './ICharacterData';
+import ICharacterData from './ICharacterData.js';
 
 /**
  * Child node utility.

packages/happy-dom/src/nodes/character-data/ICharacterData.ts

@@ -1,6 +1,6 @@
-import INode from '../node/INode';
-import IChildNode from '../child-node/IChildNode';
-import INonDocumentTypeChildNode from '../child-node/INonDocumentTypeChildNode';
+import INode from '../node/INode.js';
+import IChildNode from '../child-node/IChildNode.js';
+import INonDocumentTypeChildNode from '../child-node/INonDocumentTypeChildNode.js';
 
 export default interface ICharacterData extends INode, IChildNode, INonDocumentTypeChildNode {
 	data: string;

packages/happy-dom/src/nodes/child-node/ChildNodeUtility.ts

@@ -1,9 +1,9 @@
-import DOMException from '../../exception/DOMException';
-import XMLParser from '../../xml-parser/XMLParser';
-import Document from '../document/Document';
-import INode from '../node/INode';
-import IParentNode from '../parent-node/IParentNode';
-import IChildNode from './IChildNode';
+import DOMException from '../../exception/DOMException.js';
+import XMLParser from '../../xml-parser/XMLParser.js';
+import Document from '../document/Document.js';
+import INode from '../node/INode.js';
+import IParentNode from '../parent-node/IParentNode.js';
+import IChildNode from './IChildNode.js';
 
 /**
  * Child node utility.

packages/happy-dom/src/nodes/child-node/IChildNode.ts

@@ -1,4 +1,4 @@
-import INode from '../node/INode';
+import INode from '../node/INode.js';
 
 export default interface IChildNode extends INode {
 	/**

packages/happy-dom/src/nodes/child-node/INonDocumentTypeChildNode.ts

@@ -1,5 +1,5 @@
-import IElement from '../element/IElement';
-import INode from '../node/INode';
+import IElement from '../element/IElement.js';
+import INode from '../node/INode.js';
 
 export default interface INonDocumentTypeChildNode extends INode {
 	readonly previousElementSibling: IElement;

packages/happy-dom/src/nodes/child-node/NonDocumentChildNodeUtility.ts

@@ -1,6 +1,6 @@
-import Element from '../element/Element';
-import IElement from '../element/IElement';
-import INonDocumentTypeChildNode from './INonDocumentTypeChildNode';
+import Element from '../element/Element.js';
+import IElement from '../element/IElement.js';
+import INonDocumentTypeChildNode from './INonDocumentTypeChildNode.js';
 
 /**
  * Non Document Child node utility.

packages/happy-dom/src/nodes/comment/Comment.ts

@@ -1,6 +1,6 @@
-import Node from '../node/Node';
-import CharacterData from '../character-data/CharacterData';
-import IComment from './IComment';
+import Node from '../node/Node.js';
+import CharacterData from '../character-data/CharacterData.js';
+import IComment from './IComment.js';
 
 /**
  * Comment node.

packages/happy-dom/src/nodes/comment/IComment.ts

@@ -1,4 +1,4 @@
-import ICharacterData from '../character-data/ICharacterData';
+import ICharacterData from '../character-data/ICharacterData.js';
 
 export default interface IComment extends ICharacterData {
 	/**

packages/happy-dom/src/nodes/document-fragment/DocumentFragment.ts

@@ -1,13 +1,13 @@
-import Node from '../node/Node';
-import IElement from '../element/IElement';
-import QuerySelector from '../../query-selector/QuerySelector';
-import ParentNodeUtility from '../parent-node/ParentNodeUtility';
-import IDocumentFragment from './IDocumentFragment';
-import INode from '../node/INode';
-import IHTMLCollection from '../element/IHTMLCollection';
-import ElementUtility from '../element/ElementUtility';
-import HTMLCollection from '../element/HTMLCollection';
-import INodeList from '../node/INodeList';
+import Node from '../node/Node.js';
+import IElement from '../element/IElement.js';
+import QuerySelector from '../../query-selector/QuerySelector.js';
+import ParentNodeUtility from '../parent-node/ParentNodeUtility.js';
+import IDocumentFragment from './IDocumentFragment.js';
+import INode from '../node/INode.js';
+import IHTMLCollection from '../element/IHTMLCollection.js';
+import ElementUtility from '../element/ElementUtility.js';
+import HTMLCollection from '../element/HTMLCollection.js';
+import INodeList from '../node/INodeList.js';
 
 /**
  * DocumentFragment.

packages/happy-dom/src/nodes/document-fragment/IDocumentFragment.ts

@@ -1,6 +1,6 @@
-import IElement from '../element/IElement';
-import INode from '../node/INode';
-import INodeList from '../node/INodeList';
+import IElement from '../element/IElement.js';
+import INode from '../node/INode.js';
+import INodeList from '../node/INodeList.js';
 
 export default interface IDocumentFragment extends INode {
 	readonly childElementCount: number;

packages/happy-dom/src/nodes/document-type/DocumentType.ts

@@ -1,4 +1,4 @@
-import Node from '../node/Node';
+import Node from '../node/Node.js';
 
 /**
  * DocumentType.

packages/happy-dom/src/nodes/document-type/IDocumentType.ts

@@ -1,4 +1,4 @@
-import INode from '../node/INode';
+import INode from '../node/INode.js';
 
 /**
  * DocumentType.

packages/happy-dom/src/nodes/document/Document.ts

@@ -1,53 +1,53 @@
-import Element from '../element/Element';
-import HTMLUnknownElement from '../html-unknown-element/HTMLUnknownElement';
-import Text from '../text/Text';
-import Comment from '../comment/Comment';
-import IWindow from '../../window/IWindow';
-import Node from '../node/Node';
-import NodeIterator from '../../tree-walker/NodeIterator';
-import TreeWalker from '../../tree-walker/TreeWalker';
-import DocumentFragment from '../document-fragment/DocumentFragment';
-import XMLParser from '../../xml-parser/XMLParser';
-import Event from '../../event/Event';
-import DOMImplementation from '../../dom-implementation/DOMImplementation';
-import ElementTag from '../../config/ElementTag';
-import INodeFilter from '../../tree-walker/INodeFilter';
-import Attr from '../attr/Attr';
-import NamespaceURI from '../../config/NamespaceURI';
-import DocumentType from '../document-type/DocumentType';
-import ParentNodeUtility from '../parent-node/ParentNodeUtility';
-import QuerySelector from '../../query-selector/QuerySelector';
-import IDocument from './IDocument';
-import CSSStyleSheet from '../../css/CSSStyleSheet';
-import DOMException from '../../exception/DOMException';
-import CookieJar from '../../cookie/CookieJar';
-import IElement from '../element/IElement';
-import IHTMLScriptElement from '../html-script-element/IHTMLScriptElement';
-import IHTMLElement from '../html-element/IHTMLElement';
-import IDocumentType from '../document-type/IDocumentType';
-import INode from '../node/INode';
-import IComment from '../comment/IComment';
-import IText from '../text/IText';
-import IDocumentFragment from '../document-fragment/IDocumentFragment';
-import INodeList from '../node/INodeList';
-import NodeList from '../node/NodeList';
-import IHTMLCollection from '../element/IHTMLCollection';
-import IHTMLLinkElement from '../html-link-element/IHTMLLinkElement';
-import IHTMLStyleElement from '../html-style-element/IHTMLStyleElement';
-import DocumentReadyStateEnum from './DocumentReadyStateEnum';
-import DocumentReadyStateManager from './DocumentReadyStateManager';
-import Location from '../../location/Location';
-import Selection from '../../selection/Selection';
-import IShadowRoot from '../shadow-root/IShadowRoot';
-import Range from '../../range/Range';
-import IHTMLBaseElement from '../html-base-element/IHTMLBaseElement';
-import IAttr from '../attr/IAttr';
-import IProcessingInstruction from '../processing-instruction/IProcessingInstruction';
-import ProcessingInstruction from '../processing-instruction/ProcessingInstruction';
-import ElementUtility from '../element/ElementUtility';
-import HTMLCollection from '../element/HTMLCollection';
-import VisibilityStateEnum from './VisibilityStateEnum';
-import NodeTypeEnum from '../node/NodeTypeEnum';
+import Element from '../element/Element.js';
+import HTMLUnknownElement from '../html-unknown-element/HTMLUnknownElement.js';
+import Text from '../text/Text.js';
+import Comment from '../comment/Comment.js';
+import IWindow from '../../window/IWindow.js';
+import Node from '../node/Node.js';
+import NodeIterator from '../../tree-walker/NodeIterator.js';
+import TreeWalker from '../../tree-walker/TreeWalker.js';
+import DocumentFragment from '../document-fragment/DocumentFragment.js';
+import XMLParser from '../../xml-parser/XMLParser.js';
+import Event from '../../event/Event.js';
+import DOMImplementation from '../../dom-implementation/DOMImplementation.js';
+import ElementTag from '../../config/ElementTag.js';
+import INodeFilter from '../../tree-walker/INodeFilter.js';
+import Attr from '../attr/Attr.js';
+import NamespaceURI from '../../config/NamespaceURI.js';
+import DocumentType from '../document-type/DocumentType.js';
+import ParentNodeUtility from '../parent-node/ParentNodeUtility.js';
+import QuerySelector from '../../query-selector/QuerySelector.js';
+import IDocument from './IDocument.js';
+import CSSStyleSheet from '../../css/CSSStyleSheet.js';
+import DOMException from '../../exception/DOMException.js';
+import CookieJar from '../../cookie/CookieJar.js';
+import IElement from '../element/IElement.js';
+import IHTMLScriptElement from '../html-script-element/IHTMLScriptElement.js';
+import IHTMLElement from '../html-element/IHTMLElement.js';
+import IDocumentType from '../document-type/IDocumentType.js';
+import INode from '../node/INode.js';
+import IComment from '../comment/IComment.js';
+import IText from '../text/IText.js';
+import IDocumentFragment from '../document-fragment/IDocumentFragment.js';
+import INodeList from '../node/INodeList.js';
+import NodeList from '../node/NodeList.js';
+import IHTMLCollection from '../element/IHTMLCollection.js';
+import IHTMLLinkElement from '../html-link-element/IHTMLLinkElement.js';
+import IHTMLStyleElement from '../html-style-element/IHTMLStyleElement.js';
+import DocumentReadyStateEnum from './DocumentReadyStateEnum.js';
+import DocumentReadyStateManager from './DocumentReadyStateManager.js';
+import Location from '../../location/Location.js';
+import Selection from '../../selection/Selection.js';
+import IShadowRoot from '../shadow-root/IShadowRoot.js';
+import Range from '../../range/Range.js';
+import IHTMLBaseElement from '../html-base-element/IHTMLBaseElement.js';
+import IAttr from '../attr/IAttr.js';
+import IProcessingInstruction from '../processing-instruction/IProcessingInstruction.js';
+import ProcessingInstruction from '../processing-instruction/ProcessingInstruction.js';
+import ElementUtility from '../element/ElementUtility.js';
+import HTMLCollection from '../element/HTMLCollection.js';
+import VisibilityStateEnum from './VisibilityStateEnum.js';
+import NodeTypeEnum from '../node/NodeTypeEnum.js';
 
 const PROCESSING_INSTRUCTION_TARGET_REGEXP = /^[a-z][a-z0-9-]+$/;
 

packages/happy-dom/src/nodes/document/DocumentReadyStateManager.ts

@@ -1,4 +1,4 @@
-import IWindow from '../../window/IWindow';
+import IWindow from '../../window/IWindow.js';
 
 /**
  * Document ready state manager.

packages/happy-dom/src/nodes/document/IDocument.ts

@@ -1,27 +1,27 @@
-import IElement from '../element/IElement';
-import IHTMLElement from '../html-element/IHTMLElement';
-import IWindow from '../../window/IWindow';
-import NodeIterator from '../../tree-walker/NodeIterator';
-import TreeWalker from '../../tree-walker/TreeWalker';
-import Event from '../../event/Event';
-import DOMImplementation from '../../dom-implementation/DOMImplementation';
-import INodeFilter from '../../tree-walker/INodeFilter';
-import IAttr from '../attr/IAttr';
-import IDocumentType from '../document-type/IDocumentType';
-import IParentNode from '../parent-node/IParentNode';
-import INode from '../node/INode';
-import ICharacterData from '../character-data/ICharacterData';
-import IDocumentFragment from '../document-fragment/IDocumentFragment';
-import Selection from '../../selection/Selection';
-import IHTMLCollection from '../element/IHTMLCollection';
-import IHTMLScriptElement from '../html-script-element/IHTMLScriptElement';
-import CSSStyleSheet from '../../css/CSSStyleSheet';
-import Location from '../../location/Location';
-import DocumentReadyStateEnum from './DocumentReadyStateEnum';
-import INodeList from '../node/INodeList';
-import Range from '../../range/Range';
-import IProcessingInstruction from '../processing-instruction/IProcessingInstruction';
-import VisibilityStateEnum from './VisibilityStateEnum';
+import IElement from '../element/IElement.js';
+import IHTMLElement from '../html-element/IHTMLElement.js';
+import IWindow from '../../window/IWindow.js';
+import NodeIterator from '../../tree-walker/NodeIterator.js';
+import TreeWalker from '../../tree-walker/TreeWalker.js';
+import Event from '../../event/Event.js';
+import DOMImplementation from '../../dom-implementation/DOMImplementation.js';
+import INodeFilter from '../../tree-walker/INodeFilter.js';
+import IAttr from '../attr/IAttr.js';
+import IDocumentType from '../document-type/IDocumentType.js';
+import IParentNode from '../parent-node/IParentNode.js';
+import INode from '../node/INode.js';
+import ICharacterData from '../character-data/ICharacterData.js';
+import IDocumentFragment from '../document-fragment/IDocumentFragment.js';
+import Selection from '../../selection/Selection.js';
+import IHTMLCollection from '../element/IHTMLCollection.js';
+import IHTMLScriptElement from '../html-script-element/IHTMLScriptElement.js';
+import CSSStyleSheet from '../../css/CSSStyleSheet.js';
+import Location from '../../location/Location.js';
+import DocumentReadyStateEnum from './DocumentReadyStateEnum.js';
+import INodeList from '../node/INodeList.js';
+import Range from '../../range/Range.js';
+import IProcessingInstruction from '../processing-instruction/IProcessingInstruction.js';
+import VisibilityStateEnum from './VisibilityStateEnum.js';
 
 /**
  * Document.
@@ -227,7 +227,7 @@ export default interface IDocument extends IParentNode {
 	 * @param [whatToShow] What to show.
 	 * @param [filter] Filter.
 	 */
-	createNodeIterator(root: INode, whatToShow: number, filter: INodeFilter): NodeIterator;
+	createNodeIterator(root: INode, whatToShow?: number, filter?: INodeFilter): NodeIterator;
 
 	/**
 	 * Creates a Tree Walker.
@@ -236,7 +236,7 @@ export default interface IDocument extends IParentNode {
 	 * @param [whatToShow] What to show.
 	 * @param [filter] Filter.
 	 */
-	createTreeWalker(root: INode, whatToShow: number, filter: INodeFilter): TreeWalker;
+	createTreeWalker(root: INode, whatToShow?: number, filter?: INodeFilter): TreeWalker;
 
 	/**
 	 * Creates an event.

packages/happy-dom/src/nodes/element/DOMRectListFactory.ts

@@ -1,5 +1,5 @@
-import DOMRect from './DOMRect';
-import IDOMRectList from './IDOMRectList';
+import DOMRect from './DOMRect.js';
+import IDOMRectList from './IDOMRectList.js';
 
 /**
  * DOM rect list factory.

packages/happy-dom/src/nodes/element/Dataset.ts

@@ -1,4 +1,4 @@
-import Element from '../element/Element';
+import Element from '../element/Element.js';
 
 /**
  * Storage type for a dataset proxy.

packages/happy-dom/src/nodes/element/Element.ts

@@ -1,37 +1,37 @@
-import Node from '../node/Node';
-import ShadowRoot from '../shadow-root/ShadowRoot';
-import Attr from '../attr/Attr';
-import NamedNodeMap from '../../named-node-map/NamedNodeMap';
-import DOMRect from './DOMRect';
-import DOMTokenList from '../../dom-token-list/DOMTokenList';
-import IDOMTokenList from '../../dom-token-list/IDOMTokenList';
-import QuerySelector from '../../query-selector/QuerySelector';
-import MutationRecord from '../../mutation-observer/MutationRecord';
-import MutationTypeEnum from '../../mutation-observer/MutationTypeEnum';
-import NamespaceURI from '../../config/NamespaceURI';
-import XMLParser from '../../xml-parser/XMLParser';
-import XMLSerializer from '../../xml-serializer/XMLSerializer';
-import ChildNodeUtility from '../child-node/ChildNodeUtility';
-import ParentNodeUtility from '../parent-node/ParentNodeUtility';
-import NonDocumentChildNodeUtility from '../child-node/NonDocumentChildNodeUtility';
-import IElement from './IElement';
-import DOMException from '../../exception/DOMException';
-import IShadowRoot from '../shadow-root/IShadowRoot';
-import INode from '../node/INode';
-import IDocument from '../document/IDocument';
-import IHTMLCollection from './IHTMLCollection';
-import INodeList from '../node/INodeList';
-import { TInsertAdjacentPositions } from './IElement';
-import IText from '../text/IText';
-import IDOMRectList from './IDOMRectList';
-import DOMRectListFactory from './DOMRectListFactory';
-import IAttr from '../attr/IAttr';
-import INamedNodeMap from '../../named-node-map/INamedNodeMap';
-import Event from '../../event/Event';
-import ElementUtility from './ElementUtility';
-import HTMLCollection from './HTMLCollection';
-import EventPhaseEnum from '../../event/EventPhaseEnum';
-import CSSStyleDeclaration from '../../css/declaration/CSSStyleDeclaration';
+import Node from '../node/Node.js';
+import ShadowRoot from '../shadow-root/ShadowRoot.js';
+import Attr from '../attr/Attr.js';
+import NamedNodeMap from '../../named-node-map/NamedNodeMap.js';
+import DOMRect from './DOMRect.js';
+import DOMTokenList from '../../dom-token-list/DOMTokenList.js';
+import IDOMTokenList from '../../dom-token-list/IDOMTokenList.js';
+import QuerySelector from '../../query-selector/QuerySelector.js';
+import MutationRecord from '../../mutation-observer/MutationRecord.js';
+import MutationTypeEnum from '../../mutation-observer/MutationTypeEnum.js';
+import NamespaceURI from '../../config/NamespaceURI.js';
+import XMLParser from '../../xml-parser/XMLParser.js';
+import XMLSerializer from '../../xml-serializer/XMLSerializer.js';
+import ChildNodeUtility from '../child-node/ChildNodeUtility.js';
+import ParentNodeUtility from '../parent-node/ParentNodeUtility.js';
+import NonDocumentChildNodeUtility from '../child-node/NonDocumentChildNodeUtility.js';
+import IElement from './IElement.js';
+import DOMException from '../../exception/DOMException.js';
+import IShadowRoot from '../shadow-root/IShadowRoot.js';
+import INode from '../node/INode.js';
+import IDocument from '../document/IDocument.js';
+import IHTMLCollection from './IHTMLCollection.js';
+import INodeList from '../node/INodeList.js';
+import { TInsertAdjacentPositions } from './IElement.js';
+import IText from '../text/IText.js';
+import IDOMRectList from './IDOMRectList.js';
+import DOMRectListFactory from './DOMRectListFactory.js';
+import IAttr from '../attr/IAttr.js';
+import INamedNodeMap from '../../named-node-map/INamedNodeMap.js';
+import Event from '../../event/Event.js';
+import ElementUtility from './ElementUtility.js';
+import HTMLCollection from './HTMLCollection.js';
+import EventPhaseEnum from '../../event/EventPhaseEnum.js';
+import CSSStyleDeclaration from '../../css/declaration/CSSStyleDeclaration.js';
 
 /**
  * Element.
@@ -609,7 +609,7 @@ export default class Element extends Node implements IElement {
 	 * @param namespace Namespace URI.
 	 * @param localName Local name.
 	 */
-	public getAttributeNS(namespace: string, localName: string): string {
+	public getAttributeNS(namespace: string | null, localName: string): string {
 		const attribute = this.getAttributeNodeNS(namespace, localName);
 		if (attribute) {
 			return attribute.value;
@@ -634,7 +634,7 @@ export default class Element extends Node implements IElement {
 	 * @param localName Local name.
 	 * @returns True if attribute exists, false otherwise.
 	 */
-	public hasAttributeNS(namespace: string, localName: string): boolean {
+	public hasAttributeNS(namespace: string | null, localName: string): boolean {
 		for (const name of Object.keys(this._attributes)) {
 			const attribute = this._attributes[name];
 			if (attribute.namespaceURI === namespace && attribute.localName === localName) {
@@ -671,7 +671,7 @@ export default class Element extends Node implements IElement {
 	 * @param namespace Namespace URI.
 	 * @param localName Local name.
 	 */
-	public removeAttributeNS(namespace: string, localName: string): void {
+	public removeAttributeNS(namespace: string | null, localName: string): void {
 		for (const name of Object.keys(this._attributes)) {
 			const attribute = this._attributes[name];
 			if (attribute.namespaceURI === namespace && attribute.localName === localName) {
@@ -914,7 +914,7 @@ export default class Element extends Node implements IElement {
 	 * @param name Name.
 	 * @returns Replaced attribute.
 	 */
-	public getAttributeNodeNS(namespace: string, name: string): IAttr {
+	public getAttributeNodeNS(namespace: string | null, name: string): IAttr {
 		const attributeName = this._getAttributeName(name);
 		if (
 			this._attributes[attributeName] &&

packages/happy-dom/src/nodes/element/ElementUtility.ts

@@ -1,14 +1,14 @@
-import NodeTypeEnum from '../node/NodeTypeEnum';
-import IElement from './IElement';
-import INode from '../node/INode';
-import HTMLCollection from './HTMLCollection';
-import IDocument from '../document/IDocument';
-import IDocumentFragment from '../document-fragment/IDocumentFragment';
-import IHTMLElement from '../html-element/IHTMLElement';
-import Element from './Element';
-import NodeUtility from '../node/NodeUtility';
-import DOMException from '../../exception/DOMException';
-import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum';
+import NodeTypeEnum from '../node/NodeTypeEnum.js';
+import IElement from './IElement.js';
+import INode from '../node/INode.js';
+import HTMLCollection from './HTMLCollection.js';
+import IDocument from '../document/IDocument.js';
+import IDocumentFragment from '../document-fragment/IDocumentFragment.js';
+import IHTMLElement from '../html-element/IHTMLElement.js';
+import Element from './Element.js';
+import NodeUtility from '../node/NodeUtility.js';
+import DOMException from '../../exception/DOMException.js';
+import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum.js';
 
 const NAMED_ITEM_ATTRIBUTES = ['id', 'name'];
 

packages/happy-dom/src/nodes/element/HTMLCollection.ts

@@ -1,4 +1,4 @@
-import IHTMLCollection from './IHTMLCollection';
+import IHTMLCollection from './IHTMLCollection.js';
 
 /**
  * HTML collection.

packages/happy-dom/src/nodes/element/IElement.ts

@@ -1,14 +1,14 @@
-import IShadowRoot from '../shadow-root/IShadowRoot';
-import IAttr from '../attr/IAttr';
-import INamedNodeMap from '../../named-node-map/INamedNodeMap';
-import DOMRect from './DOMRect';
-import IDOMTokenList from '../../dom-token-list/IDOMTokenList';
-import INode from './../node/INode';
-import IChildNode from '../child-node/IChildNode';
-import IParentNode from '../parent-node/IParentNode';
-import INonDocumentTypeChildNode from '../child-node/INonDocumentTypeChildNode';
-import IDOMRectList from './IDOMRectList';
-import Event from '../../event/Event';
+import IShadowRoot from '../shadow-root/IShadowRoot.js';
+import IAttr from '../attr/IAttr.js';
+import INamedNodeMap from '../../named-node-map/INamedNodeMap.js';
+import DOMRect from './DOMRect.js';
+import IDOMTokenList from '../../dom-token-list/IDOMTokenList.js';
+import INode from './../node/INode.js';
+import IChildNode from '../child-node/IChildNode.js';
+import IParentNode from '../parent-node/IParentNode.js';
+import INonDocumentTypeChildNode from '../child-node/INonDocumentTypeChildNode.js';
+import IDOMRectList from './IDOMRectList.js';
+import Event from '../../event/Event.js';
 
 export type TInsertAdjacentPositions = 'beforebegin' | 'afterbegin' | 'beforeend' | 'afterend';
 
@@ -106,7 +106,7 @@ export default interface IElement extends IChildNode, INonDocumentTypeChildNode,
 	 * @param name Name.
 	 * @param value Value.
 	 */
-	setAttributeNS(namespaceURI: string, name: string, value: string): void;
+	setAttributeNS(namespaceURI: string | null, name: string, value: string): void;
 
 	/**
 	 * Returns attribute names.
@@ -128,7 +128,7 @@ export default interface IElement extends IChildNode, INonDocumentTypeChildNode,
 	 * @param namespace Namespace URI.
 	 * @param localName Local name.
 	 */
-	getAttributeNS(namespace: string, localName: string): string;
+	getAttributeNS(namespace: string | null, localName: string): string;
 
 	/**
 	 * Returns a boolean value indicating whether the specified element has the attribute or not.
@@ -145,7 +145,7 @@ export default interface IElement extends IChildNode, INonDocumentTypeChildNode,
 	 * @param localName Local name.
 	 * @returns True if attribute exists, false otherwise.
 	 */
-	hasAttributeNS(namespace: string, localName: string): boolean;
+	hasAttributeNS(namespace: string | null, localName: string): boolean;
 
 	/**
 	 * Returns "true" if the element has attributes.
@@ -167,7 +167,7 @@ export default interface IElement extends IChildNode, INonDocumentTypeChildNode,
 	 * @param namespace Namespace URI.
 	 * @param localName Local name.
 	 */
-	removeAttributeNS(namespace: string, localName: string): void;
+	removeAttributeNS(namespace: string | null, localName: string): void;
 
 	/**
 	 * Toggle an attribute.
@@ -263,7 +263,7 @@ export default interface IElement extends IChildNode, INonDocumentTypeChildNode,
 	 * @param nodeName Node name.
 	 * @returns Replaced attribute.
 	 */
-	getAttributeNodeNS(namespace: string, nodeName: string): IAttr;
+	getAttributeNodeNS(namespace: string | null, nodeName: string): IAttr;
 
 	/**
 	 * Removes an Attr node.

packages/happy-dom/src/nodes/html-anchor-element/HTMLAnchorElement.ts

@@ -1,10 +1,10 @@
-import HTMLElement from '../html-element/HTMLElement';
-import DOMTokenList from '../../dom-token-list/DOMTokenList';
-import IDOMTokenList from '../../dom-token-list/IDOMTokenList';
-import IHTMLAnchorElement from './IHTMLAnchorElement';
+import HTMLElement from '../html-element/HTMLElement.js';
+import DOMTokenList from '../../dom-token-list/DOMTokenList.js';
+import IDOMTokenList from '../../dom-token-list/IDOMTokenList.js';
+import IHTMLAnchorElement from './IHTMLAnchorElement.js';
 import { URL } from 'url';
-import IAttr from '../attr/IAttr';
-import HTMLAnchorElementUtility from './HTMLAnchorElementUtility';
+import IAttr from '../attr/IAttr.js';
+import HTMLAnchorElementUtility from './HTMLAnchorElementUtility.js';
 
 /**
  * HTML Anchor Element.

packages/happy-dom/src/nodes/html-anchor-element/HTMLAnchorElementUtility.ts

@@ -1,4 +1,4 @@
-import IDocument from '../document/IDocument';
+import IDocument from '../document/IDocument.js';
 import { URL } from 'url';
 
 /**

packages/happy-dom/src/nodes/html-anchor-element/IHTMLAnchorElement.ts

@@ -1,6 +1,6 @@
-import IDOMTokenList from '../../dom-token-list/IDOMTokenList';
-import IHTMLElement from '../html-element/IHTMLElement';
-import IHTMLHyperlinkElementUtils from './IHTMLHyperlinkElementUtils';
+import IDOMTokenList from '../../dom-token-list/IDOMTokenList.js';
+import IHTMLElement from '../html-element/IHTMLElement.js';
+import IHTMLHyperlinkElementUtils from './IHTMLHyperlinkElementUtils.js';
 
 /**
  * HTML Anchor Element.

packages/happy-dom/src/nodes/html-audio-element/Audio.ts

@@ -1,4 +1,4 @@
-import HTMLAudioElement from './HTMLAudioElement';
+import HTMLAudioElement from './HTMLAudioElement.js';
 
 /**
  * Image as constructor.

packages/happy-dom/src/nodes/html-audio-element/HTMLAudioElement.ts

@@ -1,5 +1,5 @@
-import HTMLMediaElement from '../html-media-element/HTMLMediaElement';
-import IHTMLAudioElement from './IHTMLAudioElement';
+import HTMLMediaElement from '../html-media-element/HTMLMediaElement.js';
+import IHTMLAudioElement from './IHTMLAudioElement.js';
 
 /**
  * HTML Audio Element.

packages/happy-dom/src/nodes/html-audio-element/IHTMLAudioElement.ts

@@ -1,4 +1,4 @@
-import IHTMLMediaElement from '../html-media-element/IHTMLMediaElement';
+import IHTMLMediaElement from '../html-media-element/IHTMLMediaElement.js';
 
 /**
  * HTML Audio Element.

packages/happy-dom/src/nodes/html-base-element/HTMLBaseElement.ts

@@ -1,5 +1,5 @@
-import HTMLElement from '../html-element/HTMLElement';
-import IHTMLBaseElement from './IHTMLBaseElement';
+import HTMLElement from '../html-element/HTMLElement.js';
+import IHTMLBaseElement from './IHTMLBaseElement.js';
 
 /**
  * HTML Base Element.

packages/happy-dom/src/nodes/html-base-element/IHTMLBaseElement.ts

@@ -1,4 +1,4 @@
-import IHTMLElement from '../html-element/IHTMLElement';
+import IHTMLElement from '../html-element/IHTMLElement.js';
 
 /**
  * HTML Base Element.

packages/happy-dom/src/nodes/html-button-element/HTMLButtonElement.ts

@@ -1,17 +1,17 @@
-import Event from '../../event/Event';
-import EventPhaseEnum from '../../event/EventPhaseEnum';
-import ValidityState from '../../validity-state/ValidityState';
-import IAttr from '../attr/IAttr';
-import IDocument from '../document/IDocument';
-import HTMLElement from '../html-element/HTMLElement';
-import HTMLFormElement from '../html-form-element/HTMLFormElement';
-import IHTMLFormElement from '../html-form-element/IHTMLFormElement';
-import IHTMLLabelElement from '../html-label-element/IHTMLLabelElement';
-import INode from '../node/INode';
-import INodeList from '../node/INodeList';
-import NodeList from '../node/NodeList';
-import IShadowRoot from '../shadow-root/IShadowRoot';
-import IHTMLButtonElement from './IHTMLButtonElement';
+import Event from '../../event/Event.js';
+import EventPhaseEnum from '../../event/EventPhaseEnum.js';
+import ValidityState from '../../validity-state/ValidityState.js';
+import IAttr from '../attr/IAttr.js';
+import IDocument from '../document/IDocument.js';
+import HTMLElement from '../html-element/HTMLElement.js';
+import HTMLFormElement from '../html-form-element/HTMLFormElement.js';
+import IHTMLFormElement from '../html-form-element/IHTMLFormElement.js';
+import IHTMLLabelElement from '../html-label-element/IHTMLLabelElement.js';
+import INode from '../node/INode.js';
+import INodeList from '../node/INodeList.js';
+import NodeList from '../node/NodeList.js';
+import IShadowRoot from '../shadow-root/IShadowRoot.js';
+import IHTMLButtonElement from './IHTMLButtonElement.js';
 
 const BUTTON_TYPES = ['submit', 'reset', 'button', 'menu'];
 

packages/happy-dom/src/nodes/html-button-element/IHTMLButtonElement.ts

@@ -1,8 +1,8 @@
-import ValidityState from '../../validity-state/ValidityState';
-import IHTMLElement from '../html-element/IHTMLElement';
-import IHTMLFormElement from '../html-form-element/IHTMLFormElement';
-import IHTMLLabelElement from '../html-label-element/IHTMLLabelElement';
-import INodeList from '../node/INodeList';
+import ValidityState from '../../validity-state/ValidityState.js';
+import IHTMLElement from '../html-element/IHTMLElement.js';
+import IHTMLFormElement from '../html-form-element/IHTMLFormElement.js';
+import IHTMLLabelElement from '../html-label-element/IHTMLLabelElement.js';
+import INodeList from '../node/INodeList.js';
 
 /**
  * HTML Button Element.

packages/happy-dom/src/nodes/html-dialog-element/HTMLDialogElement.ts

@@ -1,6 +1,6 @@
-import Event from '../../event/Event';
-import HTMLElement from '../html-element/HTMLElement';
-import IHTMLDialogElement from './IHTMLDialogElement';
+import Event from '../../event/Event.js';
+import HTMLElement from '../html-element/HTMLElement.js';
+import IHTMLDialogElement from './IHTMLDialogElement.js';
 
 /**
  * HTML Dialog Element.

packages/happy-dom/src/nodes/html-dialog-element/IHTMLDialogElement.ts

@@ -1,5 +1,5 @@
-import Event from '../../event/Event';
-import IHTMLElement from '../html-element/IHTMLElement';
+import Event from '../../event/Event.js';
+import IHTMLElement from '../html-element/IHTMLElement.js';
 
 /**
  * HTML Dialog Element.

packages/happy-dom/src/nodes/html-document/HTMLDocument.ts

@@ -1,4 +1,4 @@
-import Document from '../document/Document';
+import Document from '../document/Document.js';
 
 /**
  * Document.