web-worker-helper

> Forked from @loaders.gl/worker-utils implementation

Time consuming task

``ts
// fibonacci.js
export function fibonacci(n: number) {
let n1 = 1,
n2 = 1,
sum = 1;
for (let i = 3; i <= n; i += 1) {
sum = n1 + n2;
n1 = n2;
n2 = sum;
}
return sum;
}
`

Creating workers for time-consuming task

`ts
// fibonacci.worker.js
import { createWorker } from 'web-worker-helper';
import { fibonacci } from './fibonacci';

createWorker(async (data: number) => {
const result = fibonacci(data);
return result;
});
`

Bundle worker

Main thread call worker

1. parse worker

`ts
import { WorkerFarm } from 'web-worker-helper';

export async function parseWorker(
workerName: string,
data: any,
options?: Record = { maxConcurrency: 3, reuseWorkers: true }
) {
const url = getWorkerURL({ name: workerName });
// const source = fibonacci codeString
const workerFarm = WorkerFarm.getWorkerFarm({
maxConcurrency: options.maxConcurrency,
reuseWorkers: options.reuseWorkers,
});
const workerPool = workerFarm.getWorkerPool({ name: workerName, url });
// const workerPool = workerFarm.getWorkerPool({ name: workerName, source });
const job = await workerPool.startJob(workerName, (job, type, data) => job.done(data));

job.postMessage('process', { input: data });

const result = await job.result;
return result.result;
}
`

2. Call time-consuming task

`ts
import { parseWorker } from './parse-worker';
import { fibonacci } from './fibonacci';

export async function starFibonacci(iskorker, data) {
if (iskorker) {
const result = await parseWorker('fibonacci-worker', data, {});
return result;
}

const result = await fibonacci(data);
return result;
}
``