Function commitUpdate

packages/react-dom/src/hostConfig.ts:31–44

(fiber: FiberNode)

export const appendChildToContainer = appendInitialChild;

export function commitUpdate(fiber: FiberNode) {
	switch (fiber.tag) {
		case HostText:
			const text = fiber.memoizedProps?.content;
			return commitTextUpdate(fiber.stateNode, text);
		case HostComponent:
			return updateFiberProps(fiber.stateNode, fiber.memoizedProps);
		default:
			if (__DEV__) {
				console.warn('未实现的Update类型', fiber);
			}
			break;
	}
}

export function commitTextUpdate(textInstance: TextInstance, content: string) {
	textInstance.textContent = content;