Method onLoopReset

packages/core/src/Controller.ts:266–272

* Subscribe to loop iteration restarts on this controller. Returns an * unsubscribe function. Listeners fire synchronously inside `flushUpdate` * just before the next iteration is dispatched. * @internal

(fn: () => void)

   * @internal
   */
  onLoopReset(fn: () => void): () => void {
    const set = (this._onLoopReset ??= new Set())
    set.add(fn)
    return () => {
      set.delete(fn)
    }
  }

  /** @internal Called at the end of every animation frame */
  protected _onFrame() {