Function rebindTimelineFromResolution

packages/core/src/runtime/init.ts:1472–1510

(
    resolution: TimelineResolution,
    reason: "loop_guard" | "manual",
  )

  };

  const rebindTimelineFromResolution = (
    resolution: TimelineResolution,
    reason: "loop_guard" | "manual",
  ): boolean => {
    if (!resolution.timeline) return false;
    const previousTimeline = state.capturedTimeline;
    if (previousTimeline && previousTimeline === resolution.timeline) {
      return false;
    }
    const previousTime = Math.max(0, state.currentTime || 0);
    const wasPlaying = state.isPlaying;
    state.capturedTimeline = resolution.timeline;
    if (typeof state.capturedTimeline.timeScale === "function") {
      state.capturedTimeline.timeScale(state.playbackRate);
    }
    try {
      state.capturedTimeline.pause();
      state.capturedTimeline.seek(previousTime, false);
      if (wasPlaying) {
        state.capturedTimeline.play();
      }
    } catch (err) {
      // keep runtime resilient even if a timeline implementation throws
      swallow("runtime.init.site7", err);
    }
    postRuntimeMessage({
      source: "hf-preview",
      type: "diagnostic",
      code: "timeline_loop_guard_rebind",
      details: {
        reason,
        previousTime,
        selectedTimelineIds: resolution.selectedTimelineIds ?? [],
        selectedDurationSeconds: resolution.selectedDurationSeconds ?? null,
        mediaDurationFloorSeconds: resolution.mediaDurationFloorSeconds ?? null,
      },
    });
    return true;
  };

  let metadataRebindDebounceTimerId: number | null = null;
  let metadataRebindApplied = false;