Function queueHighlightedWork

src/ui/diff/pierre.ts:596–618

Queue highlight rendering so startup work stays serialized without starving input/render timers.

(run: () => T)

/** Queue highlight rendering so startup work stays serialized without starving input/render timers. */
function queueHighlightedWork<T>(run: () => T) {
  const queued = queuedHighlightWork.then(
    () =>
      new Promise<T>((resolve, reject) => {
        // Highlighting is CPU-heavy background work. Scheduling each serialized job as a timer,
        // rather than a microtask, yields back to OpenTUI input and frame timers between files.
        setTimeout(() => {
          try {
            resolve(run());
          } catch (error) {
            reject(error);
          }
        }, 0);
      }),
  );

  queuedHighlightWork = queued.then(
    () => undefined,
    () => undefined,
  );

  return queued;
}

/** Normalize source text the same way expanded-row slicing does before highlighting. */
function normalizeSourceText(text: string) {