orca/src/shared/abort-aware-delay.ts

export function delayUnlessAborted(ms: number, signal: AbortSignal): Promise<void> {
  if (signal.aborted) {
    return Promise.resolve()
  }
  return new Promise((resolve) => {
    const onAbort = (): void => {
      clearTimeout(timer)
      resolve()
    }
    const timer = setTimeout(() => {
      signal.removeEventListener('abort', onAbort)
      resolve()
    }, ms)
    signal.addEventListener('abort', onAbort, { once: true })
  })
}