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multee

Turn node's multitasking modules, child_process and worker_threads into simple async functions

0.2.4
latest
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npm
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Weekly downloads
300
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1
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multee

multee is a "battery" API. It turns node's multitasking modules, namingly child_process and worker_threads, into simple async functions.

Why multee helps

Without multee, you need to listen to messages from your threads/processes, and it is hard to integrate the listener to other part of your code. Also, when there are multiple operations inside the worker, we have to implement the dispatching logic inside the message listener.

The code will look like below without multee

// worker.js
process.on('message', (msg) => {
  // do heavy load job
  process.send(job_result)
})

// master.js
const child = fork('./worker')

process.on('message', (msg) => {
  // if is job result
  part2(msg)
})

function part1() {
  child.send(payload_for_worker)
}

function part2(result) {
  // do the rest with result
}

And with multee, it's just as easy as calling an async function.

// worker.js
const Multee = require('multee')
const multee = Multee('worker') // worker_threads, use 'child' for child_process

export const jobA = multee.createHandler('jobA', () => {
  // do the heavy load here
})

module.exports = () => {
  const worker = multee.start(__filename)
  return { test: jobA(worker) }
}

// master.js
async function partA() {
  const worker = require('./worker')
  const result = await worker.jobA()
  // do the rest with result
}

Out-of-the-box Typescript support

multee works with Typescript. As you can't directly start worker_threads from Typescript, multee includes the battery to handle that. note: ts-node needed as a peer dependency when using Typescript.

License

MIT

Keywords

child_process

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Package last updated on 06 Feb 2021

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