Merge pull request #1100 from ckhampus/task/1099-add-document-current…

…-script

#1099@minor: Add support for currentScript.

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

@@ -68,6 +68,7 @@ export default class Document extends Node implements IDocument {
 	public readonly _readyStateManager: DocumentReadyStateManager;
 	public readonly _children: IHTMLCollection<IElement> = new HTMLCollection<IElement>();
 	public _activeElement: IHTMLElement = null;
+	public _currentScript: IHTMLScriptElement = null;
 
 	// Used as an unique identifier which is updated whenever the DOM gets modified.
 	public _cacheID = 0;
@@ -501,6 +502,15 @@ export default class Document extends Node implements IDocument {
 		return true;
 	}
 
+	/**
+	 * Gets the currently executing script element.
+	 *
+	 * @returns the currently executing script element.
+	 */
+	public get currentScript(): IHTMLScriptElement {
+		return this._currentScript;
+	}
+
 	/**
 	 * Inserts a set of Node objects or DOMString objects after the last child of the ParentNode. DOMString objects are inserted as equivalent Text nodes.
 	 *

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

@@ -47,6 +47,7 @@ export default interface IDocument extends IParentNode {
 	readonly hidden: boolean;
 	readonly links: IHTMLCollection<IHTMLElement>;
 	readonly referrer: string;
+	readonly currentScript: IHTMLScriptElement;
 	cookie: string;
 	title: string;
 

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

@@ -31,6 +31,7 @@ import EventPhaseEnum from '../../event/EventPhaseEnum.js';
 import CSSStyleDeclaration from '../../css/declaration/CSSStyleDeclaration.js';
 import DocumentFragment from '../document-fragment/DocumentFragment.js';
 import ElementNamedNodeMap from './ElementNamedNodeMap.js';
+import WindowErrorUtility from '../../window/WindowErrorUtility.js';
 
 /**
  * Element.
@@ -931,7 +932,13 @@ export default class Element extends Node implements IElement {
 			const attribute = this.getAttribute('on' + event.type);
 
 			if (attribute && !event._immediatePropagationStopped) {
-				this.ownerDocument.defaultView.eval(attribute);
+				if (this.ownerDocument.defaultView.happyDOM.settings.disableErrorCapturing) {
+					this.ownerDocument.defaultView.eval(attribute);
+				} else {
+					WindowErrorUtility.captureError(this.ownerDocument.defaultView, () =>
+						this.ownerDocument.defaultView.eval(attribute)
+					);
+				}
 			}
 		}
 

packages/happy-dom/src/nodes/html-script-element/HTMLScriptElement.ts

@@ -189,13 +189,17 @@ export default class HTMLScriptElement extends HTMLElement implements IHTMLScrip
 						type === 'application/x-javascript' ||
 						type.startsWith('text/javascript'))
 				) {
+					this.ownerDocument['_currentScript'] = this;
+
 					if (this.ownerDocument.defaultView.happyDOM.settings.disableErrorCapturing) {
 						this.ownerDocument.defaultView.eval(textContent);
 					} else {
 						WindowErrorUtility.captureError(this.ownerDocument.defaultView, () =>
 							this.ownerDocument.defaultView.eval(textContent)
 						);
 					}
+
+					this.ownerDocument['_currentScript'] = null;
 				}
 			}
 		}

packages/happy-dom/src/nodes/html-script-element/HTMLScriptElementUtility.ts

@@ -56,13 +56,15 @@ export default class HTMLScriptElementUtility {
 					throw error;
 				}
 			} else {
+				element.ownerDocument['_currentScript'] = element;
 				if (element.ownerDocument.defaultView.happyDOM.settings.disableErrorCapturing) {
 					element.ownerDocument.defaultView.eval(code);
 				} else {
 					WindowErrorUtility.captureError(element.ownerDocument.defaultView, () =>
 						element.ownerDocument.defaultView.eval(code)
 					);
 				}
+				element.ownerDocument['_currentScript'] = null;
 				element.dispatchEvent(new Event('load'));
 			}
 		} else {
@@ -81,13 +83,15 @@ export default class HTMLScriptElementUtility {
 					throw error;
 				}
 			} else {
+				element.ownerDocument['_currentScript'] = element;
 				if (element.ownerDocument.defaultView.happyDOM.settings.disableErrorCapturing) {
 					element.ownerDocument.defaultView.eval(code);
 				} else {
 					WindowErrorUtility.captureError(element.ownerDocument.defaultView, () =>
 						element.ownerDocument.defaultView.eval(code)
 					);
 				}
+				element.ownerDocument['_currentScript'] = null;
 				element.dispatchEvent(new Event('load'));
 			}
 		}

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

@@ -36,6 +36,7 @@ import ProcessingInstruction from '../../../src/nodes/processing-instruction/Pro
 import DOMException from '../../../src/exception/DOMException.js';
 import { beforeEach, afterEach, describe, it, expect, vi } from 'vitest';
 import IRequestInit from '../../../src/fetch/types/IRequestInit.js';
+import IShadowRoot from '../../../src/nodes/shadow-root/IShadowRoot.js';
 
 /* eslint-disable jsdoc/require-jsdoc */
 
@@ -277,7 +278,7 @@ describe('Document', () => {
 		it('Returns and sets title.', () => {
 			document.title = 'test title';
 			expect(document.title).toBe('test title');
-			const title = document.head.querySelector('title');
+			const title = <Element>document.head.querySelector('title');
 			expect(title.textContent).toBe('test title');
 			document.title = 'new title';
 			expect(document.title).toBe('new title');
@@ -405,7 +406,7 @@ describe('Document', () => {
 				}
 
 				public connectedCallback(): void {
-					this.shadowRoot.innerHTML = `
+					(<IShadowRoot>this.shadowRoot).innerHTML = `
 						<div>
 							<custom-element-b></custom-element-b>
 						</div>
@@ -419,7 +420,7 @@ describe('Document', () => {
 				}
 
 				public connectedCallback(): void {
-					this.shadowRoot.innerHTML = `
+					(<IShadowRoot>this.shadowRoot).innerHTML = `
 						<div>
 							<button tabindex="0"></button>
 						</div>
@@ -1290,4 +1291,20 @@ describe('Document', () => {
 			}
 		});
 	});
+
+	describe('currentScript', () => {
+		it('Returns the currently executing script element.', () => {
+			expect(document.currentScript).toBe(null);
+			const script1 = document.createElement('script');
+			script1.textContent = 'window.test = document.currentScript;';
+			document.body.appendChild(script1);
+			expect(window['test']).toBe(script1);
+			expect(document.currentScript).toBe(null);
+			const script2 = document.createElement('script');
+			script2.textContent = 'window.test = document.currentScript;';
+			document.body.appendChild(script2);
+			expect(window['test']).toBe(script2);
+			expect(document.currentScript).toBe(null);
+		});
+	});
 });

packages/happy-dom/test/nodes/html-script-element/HTMLScriptElement.test.ts

@@ -141,17 +141,18 @@ describe('HTMLScriptElement', () => {
 	describe('set isConnected()', () => {
 		it('Evaluates the text content as code when appended to an element that is connected to the document.', () => {
 			const element = <IHTMLScriptElement>document.createElement('script');
-			element.text = 'globalThis.test = "test";';
+			element.text = 'globalThis.test = "test";globalThis.currentScript = document.currentScript;';
 			document.body.appendChild(element);
 			expect(window['test']).toBe('test');
+			expect(window['currentScript']).toBe(element);
 		});
 
 		it('Evaluates the text content as code when inserted before an element that is connected to the document.', () => {
 			const element = <IHTMLScriptElement>document.createElement('script');
 			const div1 = document.createElement('div');
 			const div2 = document.createElement('div');
 
-			element.text = 'globalThis.test = "test";';
+			element.text = 'globalThis.test = "test";globalThis.currentScript = document.currentScript;';
 
 			div1.appendChild(element);
 
@@ -160,6 +161,7 @@ describe('HTMLScriptElement', () => {
 			document.body.appendChild(element);
 
 			expect(window['test']).toBe('test');
+			expect(window['currentScript']).toBe(element);
 		});
 
 		it('Loads external script asynchronously.', async () => {
@@ -169,7 +171,8 @@ describe('HTMLScriptElement', () => {
 			vi.spyOn(window, 'fetch').mockImplementation((url: IRequestInfo) => {
 				fetchedURL = <string>url;
 				return Promise.resolve(<IResponse>{
-					text: async () => 'globalThis.test = "test";',
+					text: async () =>
+						'globalThis.test = "test";globalThis.currentScript = document.currentScript;',
 					ok: true
 				});
 			});
@@ -188,6 +191,7 @@ describe('HTMLScriptElement', () => {
 			expect((<Event>(<unknown>loadEvent)).target).toBe(script);
 			expect(fetchedURL).toBe('path/to/script/');
 			expect(window['test']).toBe('test');
+			expect(window['currentScript']).toBe(script);
 		});
 
 		it('Triggers error event when loading external script asynchronously.', async () => {
@@ -228,7 +232,7 @@ describe('HTMLScriptElement', () => {
 				(document: IDocument, url: string) => {
 					fetchedDocument = document;
 					fetchedURL = url;
-					return 'globalThis.test = "test";';
+					return 'globalThis.test = "test";globalThis.currentScript = document.currentScript;';
 				}
 			);
 
@@ -244,6 +248,7 @@ describe('HTMLScriptElement', () => {
 			expect(fetchedDocument).toBe(document);
 			expect(fetchedURL).toBe('path/to/script/');
 			expect(window['test']).toBe('test');
+			expect(window['currentScript']).toBe(script);
 		});
 
 		it('Triggers error event when loading external script synchronously with relative URL.', () => {