Function delay

packages/ai-sandbox-sprites/src/client.ts:756–769

Abortable delay: resolves after `ms`, or rejects with AbortError if aborted.

(ms: number, signal?: AbortSignal)

/** Abortable delay: resolves after `ms`, or rejects with AbortError if aborted. */
function delay(ms: number, signal?: AbortSignal): Promise<void> {
  if (signal?.aborted) return Promise.reject(signalReason(signal))
  return new Promise<void>((resolve, reject) => {
    const timer = setTimeout(() => {
      signal?.removeEventListener('abort', onAbort)
      resolve()
    }, ms)
    const onAbort = (): void => {
      clearTimeout(timer)
      reject(signalReason(signal))
    }
    signal?.addEventListener('abort', onAbort, { once: true })
  })
}

function signalReason(signal: AbortSignal | undefined): Error {
  const reason = signal?.reason