if ((getFiberFlags(node) & Placement) !== NoFlags) {
        return MOUNTING;
      }
       Thi
      if ((getFiberFlags(node) & Incomplete) !== NoFlags) {
        return UNMOUNTED;
      }
      while (node.return) {
        prevNode = node;
        node = node.return;
        if ((getFiberFlags(node) & Placement) !== NoFlags) {
          return MOUNTING;
        }
         Thi
        if ((getFiberFlags(node) & Incomplete) !== NoFlags) {
          return UNMOUNTED;
        }
         If 
        const isTimedOutSuspense =
          node.tag === SuspenseComponent && node.memoizedState !== null;
        if (isTimedOutSuspense) {
           Not
          const primaryChildFragment = node.child;
          const fallbackChildFragment = primaryChildFragment
            ? primaryChildFragment.sibling
            : null;
          if (prevNode !== fallbackChildFragment) {
            return UNMOUNTED;
          }
        }