/* c8 ignore start */
/**
 * If `promise` is resolved before `t` ms elapse, the timeout is cleared and the result of the
 * promise is returned. If the timeout ends first, a `TimeoutError` is thrown.
 */
export const withTimeout = async <T>(
  promise: Promise<T>,
  t: number
): Promise<T> => {
  let timeoutId: ReturnType<typeof setTimeout> | undefined
  const timeoutPromise = new Promise<never>((_, reject) => {
    timeoutId = setTimeout(
      () => reject(new TimeoutError(`withTimeout: timed out after ${t}ms`)),
      t
    )
  })
  try {
    return await Promise.race([promise, timeoutPromise])
  } finally {
    clearTimeout(timeoutId)
  }
}

export class TimeoutError extends Error {
  constructor(message: string) {
    super(message)
    this.name = "TimeoutError"
  }
}
/* c8 ignore end */