Function whenDOMUpdated

packages/base/src/Render.ts:107–123

()

 * return a promise that will be resolved once all invalidated web components are rendered
 */
const whenDOMUpdated = () => {
	if (renderTaskPromise) {
		return renderTaskPromise;
	}

	renderTaskPromise = new Promise<void>(resolve => {
		renderTaskPromiseResolve = resolve;
		window.requestAnimationFrame(() => {
			if (invalidatedWebComponents.isEmpty()) {
				renderTaskPromise = undefined;
				resolve();
			}
		});
	});

	return renderTaskPromise;
};

const whenAllCustomElementsAreDefined = () => {
	const definedPromises = getAllRegisteredTags().map(tag => customElements.whenDefined(tag));