Function detachAlternateSiblings

docs/index.js:12709–12722

(parentFiber)

  }
}
function detachAlternateSiblings(parentFiber) {
  var previousFiber = parentFiber.alternate;
  if (
    null !== previousFiber &&
    ((parentFiber = previousFiber.child), null !== parentFiber)
  ) {
    previousFiber.child = null;
    do
      (previousFiber = parentFiber.sibling),
        (parentFiber.sibling = null),
        (parentFiber = previousFiber);
    while (null !== parentFiber);
  }
}
function recursivelyTraversePassiveUnmountEffects(parentFiber) {
  var deletions = parentFiber.deletions;
  if (0 !== (parentFiber.flags & 16)) {