Function deleteChild

packages/react-reconciler/src/ReactChildFiber.js:430–442

(returnFiber: Fiber, childToDelete: Fiber)

  shouldTrackSideEffects: boolean,
): ChildReconciler {
  function deleteChild(returnFiber: Fiber, childToDelete: Fiber): void {
    if (!shouldTrackSideEffects) {
      // Noop.
      return;
    }
    const deletions = returnFiber.deletions;
    if (deletions === null) {
      returnFiber.deletions = [childToDelete];
      returnFiber.flags |= ChildDeletion;
    } else {
      deletions.push(childToDelete);
    }
  }

  function deleteRemainingChildren(
    returnFiber: Fiber,