Function getHostSibling

packages/react-reconciler/src/commitWork.ts:446–482

(fiber: FiberNode)

};

function getHostSibling(fiber: FiberNode) {
	let node: FiberNode = fiber;

	findSibling: while (true) {
		while (node.sibling === null) {
			const parent = node.return;

			if (
				parent === null ||
				parent.tag === HostComponent ||
				parent.tag === HostRoot
			) {
				return null;
			}
			node = parent;
		}
		node.sibling.return = node.return;
		node = node.sibling;

		while (node.tag !== HostText && node.tag !== HostComponent) {
			// 向下遍历
			if ((node.flags & Placement) !== NoFlags) {
				continue findSibling;
			}
			if (node.child === null) {
				continue findSibling;
			} else {
				node.child.return = node;
				node = node.child;
			}
		}

		if ((node.flags & Placement) === NoFlags) {
			return node.stateNode;
		}
	}
}

function getHostParent(fiber: FiberNode): Container | null {
	let parent = fiber.return;