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

@@ -14,6 +14,7 @@ enum DOMExceptionNameEnum {
 	invalidAccessError = 'InvalidAccessError',
 	unknownError = 'UnknownError',
 	abortError = 'AbortError',
+	timeoutError = 'TimeoutError',
 	encodingError = 'EncodingError',
 	uriMismatchError = 'URIMismatchError'
 }

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

@@ -87,6 +87,24 @@ export default class AbortSignal extends EventTarget {
 		return signal;
 	}
 
+	/**
+	 * Returns an AbortSignal that will automatically abort after a specified
+	 * time.
+	 *
+	 * @param [time] Time in milliseconds.
+	 * @returns AbortSignal instance.
+	 */
+	public static timeout(time: number): AbortSignal {
+		const window = this[PropertySymbol.window];
+		const signal = new this();
+		window.setTimeout(() => {
+			signal[PropertySymbol.abort](
+				new window.DOMException('signal timed out', DOMExceptionNameEnum.timeoutError)
+			);
+		}, time);
+		return signal;
+	}
+
 	/**
 	 * Takes an iterable of abort signals and returns an AbortSignal that is
 	 * aborted when any of the input iterable abort signals are aborted.

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

@@ -3,6 +3,7 @@ import { describe, it, expect, beforeEach } from 'vitest';
 import * as PropertySymbol from '../../src/PropertySymbol.js';
 import BrowserWindow from '../../src/window/BrowserWindow.js';
 import Window from '../../src/window/Window.js';
+import DOMException from '../../src/exception/DOMException.js';
 
 describe('AbortSignal', () => {
 	let window: BrowserWindow;
@@ -50,6 +51,20 @@ describe('AbortSignal', () => {
 		});
 	});
 
+	describe('AbortSignal.timeout()', () => {
+		it('Returns a new instance of AbortSignal that aborts with a "TimeoutError" after a timeout.', async () => {
+			const signal = window.AbortSignal.timeout(10);
+
+			expect(signal.aborted).toBe(false);
+
+			await new Promise((resolve) => setTimeout(resolve, 100));
+
+			expect(signal.aborted).toBe(true);
+			expect(signal.reason).toBeInstanceOf(DOMException);
+			expect(signal.reason?.name).toBe('TimeoutError');
+		});
+	});
+
 	describe('AbortSignal.any()', () => {
 		it('Returns a signal that is asynchronously aborted when one of the supplied signals is asynchronously aborted.', () => {
 			const signal1 = new window.AbortSignal();