Function useFiber

packages/react-reconciler/src/childFibers.ts:309–314

(fiber: FiberNode, pendingProps: Props)

}

function useFiber(fiber: FiberNode, pendingProps: Props): FiberNode {
	const clone = createWorkInProgress(fiber, pendingProps);
	clone.index = 0;
	clone.sibling = null;
	return clone;
}

function updateFragment(
	returnFiber: FiberNode,