Okie dokie artichokie
Mutual callable worker thread pool with fallback. Based on okie.
- worker pool
- calling functions in the main thread from the worker
- falling back to run the code in the main thread
const parent = async () => 1
const syncParent = () => 2
const worker = new Worker(
() => async () => {
return (await parent()) + syncParent() + 1
},
{
parentFunctions: { parent, syncParent }
}
)
const result = await worker.run()
console.log(result) // 4
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()