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Welcome to hurried

hurried is a tiny, modern, fully type-safe library for running CPU-bound JavaScript off the event loop using Node.js worker threads — with a developer experience that doesn't make you want to switch back to plain worker_threads.

import { Thread } from 'hurried';

const t = Thread.fromFunction((n: number) => n * 2);
await t.run(21);    // → 42
await t.terminate();

That's it. Type-safe run(), automatic worker lifecycle, real Promise.

What you get​

  • Inline-function workers — no separate worker file needed for simple cases.
  • A typed event bus — thread.on('progress', payload => ...) with full TypeScript inference both sides of the worker boundary.
  • Pools with task queues, backpressure, and aggregated event streams.
  • Parallel helpers — parallel() and mapParallel() for fire-and-forget concurrency.
  • AbortSignal + timeouts on every primitive.
  • Structured errors — TaskError, TaskTimeoutError, TaskAbortedError, TerminatedError.
  • Dual ESM + CJS with generated .d.ts. Zero runtime dependencies.

Why?​

Raw worker_threads is powerful but ceremonial: separate files, untyped postMessage, no pools, no progress events. hurried wraps that primitive in an API real codebases actually want to use.

Read on: