artichokie

Okie dokie artichokie

Mutual callable worker thread pool with fallback. Based on okie.

Features

• worker pool
• calling functions in the main thread from the worker
• falling back to run the code in the main thread

Examples

const parent = async () => 1
const worker = new Worker(
  () => async () => {
    return (await parent()) + 1
  },
  {
    parentFunctions: { parent }
  }
)

const result = await worker.run()
console.log(result) // 2

worker.stop()

const infSymbol = Symbol('inf')
const isInf = async (n: number | symbol) => n === infSymbol

const worker = new WorkerWithFallback(
  () => async (n: number | symbol) => {
    return await isInf(n) ? Infinity : 0
  },
  {
    parentFunctions: { isInf },
    shouldUseFake(n) {
      // symbol cannot be passed to a worker
      // fallback to run the code in main thread in that case
      return typeof n === 'symbol'
    }
  }
)

const results = await Promise.all([
  worker.run(1),
  worker.run(infSymbol)
])

console.log(results) // [0, Infinity]

worker.stop()