Function renderInWorker

apps/sim/lib/pptx-renderer/utils/pdf-renderer.ts:133–164

(
  pdfData: Uint8Array,
  width: number,
  height: number,
  pdfjsUrl: string
)

}

function renderInWorker(
  pdfData: Uint8Array,
  width: number,
  height: number,
  pdfjsUrl: string
): Promise<Blob | null> {
  return new Promise((resolve) => {
    const worker = getWorker(pdfjsUrl)
    if (!worker) {
      resolve(null)
      return
    }

    const id = ++_msgId
    _pending.set(id, {
      resolve,
      reject: () => resolve(null),
    })

    // Transfer the buffer to avoid copying
    const copy = pdfData.slice() // copy so caller retains original
    worker.postMessage({ id, pdfData: copy, width, height, pdfjsUrl }, [copy.buffer])

    // Timeout: if worker doesn't respond in 15s, give up
    setTimeout(() => {
      if (_pending.has(id)) {
        _pending.delete(id)
        resolve(null)
      }
    }, 15000)
  })
}

// ---------------------------------------------------------------------------
// Public API