Function probeFreePort

scripts/probe-port.ts:18–23

(start: number, end: number = start + 100)

 * @throws if no port in `[start, end]` is available.
 */
export async function probeFreePort(start: number, end: number = start + 100): Promise<number> {
  for (let port = start; port <= end; port++) {
    if (await isPortFree(port)) return port
  }
  throw new Error(`probeFreePort: no free port in range ${start}..${end}`)
}

/**
 * A port only counts as free when BOTH the v4 wildcard (0.0.0.0) and the