Function commitUnmount

docs/external/js/react-dom.development.js:20186–20287

(finishedRoot, current, renderPriorityLevel)

  function commitUnmount(finishedRoot, current, renderPriorityLevel) {
    onCommitUnmount(current);

    switch (current.tag) {
      case FunctionComponent:
      case ForwardRef:
      case MemoComponent:
      case SimpleMemoComponent:
      case Block:
        {
          var updateQueue = current.updateQueue;

          if (updateQueue !== null) {
            var lastEffect = updateQueue.lastEffect;

            if (lastEffect !== null) {
              var firstEffect = lastEffect.next;

              {
                // When the owner fiber is deleted, the destroy function of a passive
                // effect hook is called during the synchronous commit phase. This is
                // a concession to implementation complexity. Calling it in the
                // passive effect phase (like they usually are, when dependencies
                // change during an update) would require either traversing the
                // children of the deleted fiber again, or including unmount effects
                // as part of the fiber effect list.
                //
                // Because this is during the sync commit phase, we need to change
                // the priority.
                //
                // TODO: Reconsider this implementation trade off.
                var priorityLevel = renderPriorityLevel > NormalPriority ? NormalPriority : renderPriorityLevel;
                runWithPriority$1(priorityLevel, function () {
                  var effect = firstEffect;

                  do {
                    var _destroy = effect.destroy;

                    if (_destroy !== undefined) {
                      safelyCallDestroy(current, _destroy);
                    }

                    effect = effect.next;
                  } while (effect !== firstEffect);
                });
              }
            }
          }

          return;
        }

      case ClassComponent:
        {
          safelyDetachRef(current);
          var instance = current.stateNode;

          if (typeof instance.componentWillUnmount === 'function') {