web-test-runner.config.mjs

export default {
	files: 'test/**/*.test.js',
	nodeResolve: true,
	middleware: [
		function rewriteBase(context, next) {
			if (context.url.indexOf('/base') === 0) {
				context.url = context.url.replace('/base', '')
			}
			return next();
		}
	],
	testRunnerHtml: (testFramework) =>
    `<html>
		<body>
		  <script src="node_modules/codemirror/lib/codemirror.js"></script>
		  <script type="module" src="${testFramework}"></script>
		</body>
	  </html>`
};