// Created on savesnippets.com · https://savesnippets.com/BcT4t5jerfIeu9
export function withTimeout<T>(p: Promise<T>, ms: number, label = 'operation'): Promise<T> {
  let timer: ReturnType<typeof setTimeout>;
  const timeout = new Promise<never>((_, reject) => {
    timer = setTimeout(() => reject(new Error(`${label} timed out after ${ms}ms`)), ms);
  });
  return Promise.race([p, timeout]).finally(() => clearTimeout(timer));
}

// Usage
try {
  const data = await withTimeout(fetch('/slow-api').then(r => r.json()), 5_000, 'fetch /slow-api');
} catch (e) {
  console.error(e);   // either fetch error OR "fetch /slow-api timed out after 5000ms"
}