Function getWorker

apps/sim/lib/pptx-renderer/utils/pdf-renderer.ts:95–131

(_pdfjsUrl: string)

>()

function getWorker(_pdfjsUrl: string): Worker | null {
  if (_workerFailed) return null
  if (_worker) return _worker

  try {
    const blob = new Blob([WORKER_SRC], { type: 'text/javascript' })
    const url = URL.createObjectURL(blob)
    _worker = new Worker(url, { type: 'module' })

    _worker.onmessage = (e: MessageEvent) => {
      const { id, blob, error } = e.data
      const entry = _pending.get(id)
      if (!entry) return
      _pending.delete(id)
      if (error) {
        entry.resolve(null) // Treat worker-side errors as "no result"
      } else {
        entry.resolve(blob ?? null)
      }
    }

    _worker.onerror = () => {
      // Worker failed to initialize (e.g. module import blocked by CSP)
      _workerFailed = true
      _worker = null
      for (const [, entry] of _pending) {
        entry.resolve(null)
      }
      _pending.clear()
    }

    return _worker
  } catch {
    _workerFailed = true
    return null
  }
}

function renderInWorker(
  pdfData: Uint8Array,