capricorn86 / happy-dom-without-node Goto Github PK

Describe the bug

Using an append method (append, before, afer, etc.) on a DOM Node (element, comment, etc.) with a non string value throws an error. Should coerce value to string and use it.

To Reproduce

Stackblitz repo

import { Window } from 'happy-dom';
const window = new Window({ url: 'https://localhost:8080' });
const document = window.document;
const div = document.createElement('div');
div.append(42); // fails here
console.log(div.outerHTML);

Yields:

Error: Cannot read properties of undefined (reading 'length')
    at _0xb418b8._evaluate (https://stackblitzstartersjzbfyn-4b51.w-credentialless.staticblitz.com/blitz.69a3aa37.js:352:377970)
    at async ModuleJob.run (https://stackblitzstartersjzbfyn-4b51.w-credentialless.staticblitz.com/blitz.69a3aa37.js:181:2372)

Expected behavior

Converts the value to a string and appends to target node

Screenshots

Browser behavior:

Device:

Standard library using node

Additional context

For me, road block to using happy-dom as a vitest environment runner