@zeix/ui-element/test/web-test-runner.config.js

UIElement - a HTML-first library for reactive Web Components

import { playwrightLauncher } from '@web/test-runner-playwright'

export default {
	files: [
		'test/*-test.html',
		'test/core/*-test.html',
		'test/lib/*-test.html',
	],
	nodeResolve: true,
	browsers: [
		playwrightLauncher({ product: 'chromium' }),
		playwrightLauncher({ product: 'firefox' }),
		playwrightLauncher({ product: 'webkit' }),
	],
	testsStartTimeout: 1000,
	testsFinishTimeout: 120000,
	browserStartTimeout: 2000,
	concurrency: 1,
	watch: false,
}