Function scheduleFlush

src/core/createRenderCoordinator.ts:2245–2292

(options?: { readonly immediate?: boolean })

  };

  const scheduleFlush = (options?: { readonly immediate?: boolean }): void => {
    if (disposed) return;
    if (flushScheduled && !options?.immediate) return;

    // Cancel any previous schedule so we coalesce to exactly one pending flush.
    if (flushRafId !== null) {
      cancelAnimationFrame(flushRafId);
      flushRafId = null;
    }
    if (flushTimeoutId !== null) {
      clearTimeout(flushTimeoutId);
      flushTimeoutId = null;
    }

    flushScheduled = true;

    flushRafId = requestAnimationFrame(() => {
      flushRafId = null;
      if (disposed) {
        cancelScheduledFlush();
        return;
      }
      // rAF fired first: cancel the fallback timeout.
      if (flushTimeoutId !== null) {
        clearTimeout(flushTimeoutId);
        flushTimeoutId = null;
      }
      flushScheduled = false;
      executeFlush();
    });

    // Fallback: ensure we flush even if rAF is delayed (high-frequency streams > 60Hz).
    flushTimeoutId = (typeof self !== 'undefined' ? self : window).setTimeout(() => {
      if (disposed) {
        cancelScheduledFlush();
        return;
      }
      if (!flushScheduled) return;

      if (flushRafId !== null) {
        cancelAnimationFrame(flushRafId);
        flushRafId = null;
      }
      flushScheduled = false;
      flushTimeoutId = null;
      executeFlush();
    }, 16);
  };

  const scheduleZoomResample = (): void => {
    if (disposed) return;