Method moveChildNodes

src/TextSnapshot.ts:273–298

(
      attachTarget: TextSnapshotNode,
      extraNode: TextSnapshotNode,
      descendantIds: Set<number>,
    )

    };

    const moveChildNodes = (
      attachTarget: TextSnapshotNode,
      extraNode: TextSnapshotNode,
      descendantIds: Set<number>,
    ): number => {
      let firstMovedIndex = -1;
      if (descendantIds.size > 0 && attachTarget.children) {
        const remainingChildren: TextSnapshotNode[] = [];
        for (const child of attachTarget.children) {
          if (child.backendNodeId && descendantIds.has(child.backendNodeId)) {
            if (firstMovedIndex === -1) {
              firstMovedIndex = remainingChildren.length;
            }
            extraNode.children.push(child);
          } else {
            remainingChildren.push(child);
          }
        }
        attachTarget.children = remainingChildren;
      }
      return firstMovedIndex !== -1
        ? firstMovedIndex
        : attachTarget.children
          ? attachTarget.children.length
          : 0;
    };

    if (extraHandles.length) {
      page.extraHandles = extraHandles;