BREAKING CHANGE: [#320] Adds support for ECMAScript modules

.eslintignore

@@ -2,4 +2,5 @@
 **/tmp
 **/lib
 **/cjs
-**/tmp
+**/tmp
+**/test/**/modules-with-compilation-error

packages/happy-dom/src/PropertySymbol.ts

@@ -379,3 +379,15 @@ export const root = Symbol('root');
 export const filterNode = Symbol('filterNode');
 export const customElementReactionStack = Symbol('customElementReactionStack');
 export const dispatching = Symbol('dispatching');
+export const modules = Symbol('modules');
+export const preloads = Symbol('preloads');
+export const body = Symbol('body');
+export const redirect = Symbol('redirect');
+export const referrerPolicy = Symbol('referrerPolicy');
+export const signal = Symbol('signal');
+export const bodyUsed = Symbol('bodyUsed');
+export const credentials = Symbol('credentials');
+export const blocking = Symbol('blocking');
+export const moduleImportMap = Symbol('moduleImportMap');
+export const dispatchError = Symbol('dispatchError');
+export const supports = Symbol('supports');

packages/happy-dom/src/async-task-manager/AsyncTaskManager.ts

@@ -16,11 +16,16 @@ export default class AsyncTaskManager {
 	private runningTaskCount = 0;
 	private runningTimers: NodeJS.Timeout[] = [];
 	private runningImmediates: NodeJS.Immediate[] = [];
+	private debugTrace: Map<number | NodeJS.Timeout | NodeJS.Immediate, string> = new Map();
 	private waitUntilCompleteTimer: NodeJS.Timeout | null = null;
-	private waitUntilCompleteResolvers: Array<() => void> = [];
+	private waitUntilCompleteResolvers: Array<{
+		resolve: () => void;
+		reject: (error: Error) => void;
+	}> = [];
 	private aborted = false;
 	private destroyed = false;
 	#browserFrame: IBrowserFrame;
+	#debugTimeout: NodeJS.Timeout | null;
 
 	/**
 	 * Constructor.
@@ -37,8 +42,8 @@ export default class AsyncTaskManager {
 	 * @returns Promise.
 	 */
 	public waitUntilComplete(): Promise<void> {
-		return new Promise((resolve) => {
-			this.waitUntilCompleteResolvers.push(resolve);
+		return new Promise((resolve, reject) => {
+			this.waitUntilCompleteResolvers.push({ resolve, reject });
 			this.resolveWhenComplete();
 		});
 	}
@@ -48,8 +53,8 @@ export default class AsyncTaskManager {
 	 */
 	public abort(): Promise<void> {
 		if (this.aborted) {
-			return new Promise((resolve) => {
-				this.waitUntilCompleteResolvers.push(resolve);
+			return new Promise((resolve, reject) => {
+				this.waitUntilCompleteResolvers.push({ resolve, reject });
 				this.resolveWhenComplete();
 			});
 		}
@@ -61,8 +66,8 @@ export default class AsyncTaskManager {
 	 */
 	public destroy(): Promise<void> {
 		if (this.aborted) {
-			return new Promise((resolve) => {
-				this.waitUntilCompleteResolvers.push(resolve);
+			return new Promise((resolve, reject) => {
+				this.waitUntilCompleteResolvers.push({ resolve, reject });
 				this.resolveWhenComplete();
 			});
 		}
@@ -84,6 +89,9 @@ export default class AsyncTaskManager {
 			this.waitUntilCompleteTimer = null;
 		}
 		this.runningTimers.push(timerID);
+		if (this.#browserFrame.page?.context?.browser?.settings?.debug?.traceWaitUntilComplete > 0) {
+			this.debugTrace.set(timerID, new Error().stack);
+		}
 	}
 
 	/**
@@ -99,9 +107,10 @@ export default class AsyncTaskManager {
 		const index = this.runningTimers.indexOf(timerID);
 		if (index !== -1) {
 			this.runningTimers.splice(index, 1);
-			if (!this.runningTaskCount && !this.runningTimers.length && !this.runningImmediates.length) {
-				this.resolveWhenComplete();
-			}
+			this.resolveWhenComplete();
+		}
+		if (this.#browserFrame.page?.context?.browser?.settings?.debug?.traceWaitUntilComplete > 0) {
+			this.debugTrace.delete(timerID);
 		}
 	}
 
@@ -120,6 +129,9 @@ export default class AsyncTaskManager {
 			this.waitUntilCompleteTimer = null;
 		}
 		this.runningImmediates.push(immediateID);
+		if (this.#browserFrame.page?.context?.browser?.settings?.debug?.traceWaitUntilComplete > 0) {
+			this.debugTrace.set(immediateID, new Error().stack);
+		}
 	}
 
 	/**
@@ -135,9 +147,10 @@ export default class AsyncTaskManager {
 		const index = this.runningImmediates.indexOf(immediateID);
 		if (index !== -1) {
 			this.runningImmediates.splice(index, 1);
-			if (!this.runningTaskCount && !this.runningTimers.length && !this.runningImmediates.length) {
-				this.resolveWhenComplete();
-			}
+			this.resolveWhenComplete();
+		}
+		if (this.#browserFrame.page?.context?.browser?.settings?.debug?.traceWaitUntilComplete > 0) {
+			this.debugTrace.delete(immediateID);
 		}
 	}
 
@@ -163,6 +176,9 @@ export default class AsyncTaskManager {
 		const taskID = this.newTaskID();
 		this.runningTasks[taskID] = abortHandler ? abortHandler : () => {};
 		this.runningTaskCount++;
+		if (this.#browserFrame.page?.context?.browser?.settings?.debug?.traceWaitUntilComplete > 0) {
+			this.debugTrace.set(taskID, new Error().stack);
+		}
 		return taskID;
 	}
 
@@ -178,9 +194,10 @@ export default class AsyncTaskManager {
 		if (this.runningTasks[taskID]) {
 			delete this.runningTasks[taskID];
 			this.runningTaskCount--;
-			if (!this.runningTaskCount && !this.runningTimers.length && !this.runningImmediates.length) {
-				this.resolveWhenComplete();
-			}
+			this.resolveWhenComplete();
+		}
+		if (this.#browserFrame.page?.context?.browser?.settings?.debug?.traceWaitUntilComplete > 0) {
+			this.debugTrace.delete(taskID);
 		}
 	}
 
@@ -207,6 +224,8 @@ export default class AsyncTaskManager {
 	 * Resolves when complete.
 	 */
 	private resolveWhenComplete(): void {
+		this.applyDebugging();
+
 		if (this.runningTaskCount || this.runningTimers.length || this.runningImmediates.length) {
 			return;
 		}
@@ -222,16 +241,58 @@ export default class AsyncTaskManager {
 		this.waitUntilCompleteTimer = TIMER.setTimeout(() => {
 			this.waitUntilCompleteTimer = null;
 			if (!this.runningTaskCount && !this.runningTimers.length && !this.runningImmediates.length) {
+				if (this.#debugTimeout) {
+					TIMER.clearTimeout(this.#debugTimeout);
+				}
 				const resolvers = this.waitUntilCompleteResolvers;
 				this.waitUntilCompleteResolvers = [];
 				for (const resolver of resolvers) {
-					resolver();
+					resolver.resolve();
 				}
 				this.aborted = false;
+			} else {
+				this.applyDebugging();
 			}
 		}, 1);
 	}
 
+	/**
+	 * Applies debugging.
+	 */
+	private applyDebugging(): void {
+		const debug = this.#browserFrame.page?.context?.browser?.settings?.debug;
+		if (!debug?.traceWaitUntilComplete || debug.traceWaitUntilComplete < 1) {
+			return;
+		}
+		if (this.#debugTimeout) {
+			return;
+		}
+		this.#debugTimeout = TIMER.setTimeout(() => {
+			this.#debugTimeout = null;
+
+			let errorMessage = `The maximum time was reached for "waitUntilComplete()".\n\n${
+				this.debugTrace.size
+			} task${
+				this.debugTrace.size === 1 ? '' : 's'
+			} did not end in time.\n\nThe following traces were recorded:\n\n`;
+
+			for (const [key, value] of this.debugTrace.entries()) {
+				const type = typeof key === 'number' ? 'Task' : 'Timer';
+				errorMessage += `${type} #${key}\n‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾${value
+					.replace(/Error:/, '')
+					.replace(/\s+at /gm, '\n> ')}\n\n`;
+			}
+
+			const error = new Error(errorMessage);
+
+			for (const resolver of this.waitUntilCompleteResolvers) {
+				resolver.reject(error);
+			}
+
+			this.abortAll(true);
+		}, debug.traceWaitUntilComplete);
+	}
+
 	/**
 	 * Aborts all tasks.
 	 *
@@ -248,6 +309,7 @@ export default class AsyncTaskManager {
 		this.runningTaskCount = 0;
 		this.runningImmediates = [];
 		this.runningTimers = [];
+		this.debugTrace = new Map();
 
 		if (this.waitUntilCompleteTimer) {
 			TIMER.clearTimeout(this.waitUntilCompleteTimer);
@@ -267,8 +329,8 @@ export default class AsyncTaskManager {
 		}
 
 		// We need to wait for microtasks to complete before resolving.
-		return new Promise((resolve) => {
-			this.waitUntilCompleteResolvers.push(resolve);
+		return new Promise((resolve, reject) => {
+			this.waitUntilCompleteResolvers.push({ resolve, reject });
 			this.resolveWhenComplete();
 		});
 	}

packages/happy-dom/src/browser/BrowserSettingsFactory.ts

@@ -36,6 +36,10 @@ export default class BrowserSettingsFactory {
 			device: {
 				...DefaultBrowserSettings.device,
 				...settings?.device
+			},
+			debug: {
+				...DefaultBrowserSettings.debug,
+				...settings?.debug
 			}
 		};
 	}

packages/happy-dom/src/browser/DefaultBrowserSettings.ts

@@ -39,5 +39,8 @@ export default <IBrowserSettings>{
 	device: {
 		prefersColorScheme: 'light',
 		mediaType: 'screen'
+	},
+	debug: {
+		traceWaitUntilComplete: -1
 	}
 };

packages/happy-dom/src/browser/types/IBrowserSettings.ts

@@ -111,4 +111,11 @@ export default interface IBrowserSettings {
 		prefersColorScheme: string;
 		mediaType: string;
 	};
+
+	/**
+	 * Debug settings.
+	 */
+	debug: {
+		traceWaitUntilComplete: number;
+	};
 }

packages/happy-dom/src/browser/types/IOptionalBrowserSettings.ts

@@ -105,4 +105,11 @@ export default interface IOptionalBrowserSettings {
 		prefersColorScheme?: string;
 		mediaType?: string;
 	};
+
+	/**
+	 * Debug settings.
+	 */
+	debug?: {
+		traceWaitUntilComplete?: number;
+	};
 }

packages/happy-dom/src/browser/utilities/BrowserFrameNavigator.ts

@@ -2,7 +2,6 @@ import IBrowserFrame from '../types/IBrowserFrame.js';
 import * as PropertySymbol from '../../PropertySymbol.js';
 import IGoToOptions from '../types/IGoToOptions.js';
 import Response from '../../fetch/Response.js';
-import DocumentReadyStateManager from '../../nodes/document/DocumentReadyStateManager.js';
 import BrowserWindow from '../../window/BrowserWindow.js';
 import BrowserFrameFactory from './BrowserFrameFactory.js';
 import BrowserFrameURL from './BrowserFrameURL.js';
@@ -61,9 +60,7 @@ export default class BrowserFrameNavigator {
 		// Javascript protocol
 		if (targetURL.protocol === 'javascript:') {
 			if (frame && !frame.page.context.browser.settings.disableJavaScriptEvaluation) {
-				const readyStateManager = (<
-					{ [PropertySymbol.readyStateManager]: DocumentReadyStateManager }
-				>(<unknown>frame.window))[PropertySymbol.readyStateManager];
+				const readyStateManager = frame.window[PropertySymbol.readyStateManager];
 
 				readyStateManager.startTask();
 				const code =
@@ -178,9 +175,7 @@ export default class BrowserFrameNavigator {
 		}
 
 		// Start navigation
-		const readyStateManager = (<{ [PropertySymbol.readyStateManager]: DocumentReadyStateManager }>(
-			(<unknown>frame.window)
-		))[PropertySymbol.readyStateManager];
+		const readyStateManager = frame.window[PropertySymbol.readyStateManager];
 		const abortController = new frame.window.AbortController();
 		const timeout = frame.window.setTimeout(
 			() => abortController.abort(new Error('Request timed out.')),

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

@@ -19,21 +19,29 @@ export default class DOMTokenList {
 		items: [],
 		attributeValue: ''
 	};
+	private [PropertySymbol.supports]: string[];
 
 	/**
 	 * Constructor.
 	 *
 	 * @param illegalConstructorSymbol Illegal constructor symbol.
 	 * @param ownerElement Owner element.
 	 * @param attributeName Attribute name.
+	 * @param [supports] Supports.
 	 */
-	constructor(illegalConstructorSymbol: symbol, ownerElement: Element, attributeName: string) {
+	constructor(
+		illegalConstructorSymbol: symbol,
+		ownerElement: Element,
+		attributeName: string,
+		supports?: string[]
+	) {
 		if (illegalConstructorSymbol !== PropertySymbol.illegalConstructor) {
 			throw new TypeError('Illegal constructor');
 		}
 
 		this[PropertySymbol.ownerElement] = ownerElement;
 		this[PropertySymbol.attributeName] = attributeName;
+		this[PropertySymbol.supports] = supports || [];
 
 		const methodBinder = new ClassMethodBinder(this, [DOMTokenList]);
 
@@ -189,10 +197,10 @@ export default class DOMTokenList {
 	/**
 	 * Supports.
 	 *
-	 * @param _token Token.
+	 * @param token Token.
 	 */
-	public supports(_token: string): boolean {
-		return false;
+	public supports(token: string): boolean {
+		return this[PropertySymbol.supports].includes(token);
 	}
 
 	/**