Function diff

packages/rrdom/src/diff.ts:104–121

(
  oldTree: Node,
  newTree: IRRNode,
  replayer: ReplayerHandler,
  rrnodeMirror: Mirror = (newTree as RRDocument).mirror ||
    (newTree.ownerDocument as RRDocument).mirror,
)

 * @param rrnodeMirror - The mirror of the new tree.
 */
export function diff(
  oldTree: Node,
  newTree: IRRNode,
  replayer: ReplayerHandler,
  rrnodeMirror: Mirror = (newTree as RRDocument).mirror ||
    (newTree.ownerDocument as RRDocument).mirror,
) {
  oldTree = diffBeforeUpdatingChildren(
    oldTree,
    newTree,
    replayer,
    rrnodeMirror,
  );

  diffChildren(oldTree, newTree, replayer, rrnodeMirror);

  diffAfterUpdatingChildren(oldTree, newTree, replayer);
}

/**
 * Do some preparation work before updating the children of the old tree.