Callink

Callink is a TypeScript library inspired by Comlink, designed to simplify communication from Web Workers to the main thread.

Features

• Worker → Main – If Comlink simplifies calling Workers from the main thread, Callink simplifies calling the main thread from Workers.
• Simple usage – Call main-thread functions directly from a Worker, just like local functions.
• Transferable support – Supports high-performance transfer of ArrayBuffer, OffscreenCanvas, and other transferable objects.

Install

npm install callink

Example

main.ts

import { Callink } from "callink";

const obj = {
  counter: 0,
  inc() {
    this.counter++;
  },
};

const worker = new Worker("worker.js");
Callink.provide(worker, api);

worker.ts

import { Callink } from "callink";

async function init() {
  const main = Callink.connect();
  alert(`Counter: ${await main.counter}`);
  await main.inc();
  alert(`Counter: ${await main.counter}`);
}

init();

Transferable

const data = new Uint8Array([1, 2, 3, 4, 5]);
await main.send(Callink.transfer(data, [data.buffer]));

License

MIT License © 2025 oyc0401