Awesome
make-asynchronous
Make a synchronous function asynchronous by running it in a worker
This makes it super simple to offload some expensive work without having to deal with the complex Web Workers API.
Please upvote this Node.js issue 🙏 It would let us reduce the amount of dependencies and simplify the code.
Works in Node.js and browsers.
Install
npm install make-asynchronous
Usage
import makeAsynchronous from 'make-asynchronous';
const fn = makeAsynchronous(number => {
return performExpensiveOperation(number);
});
console.log(await fn(2));
//=> 345342
API
makeAsynchronous(function)
Returns a wrapped version of the given function which executes asynchronously in a background thread (meaning it will not block the main thread).
The given function is serialized, so you cannot use any variables or imports from outside the function scope. You can instead pass in arguments to the function.
makeAsynchronousIterable(function)
Make the iterable returned by a function asynchronous by running it in a worker.
import {makeAsynchronousIterable} from 'make-asynchronous';
const fn = makeAsynchronousIterable(function * (number) {
yield * performExpensiveOperation(number);
});
for await (const number of fn(2)) {
console.log(number);
}
fn.withSignal(signal)
The function returned by makeAsynchronous
and makeAsynchronousIterable
has an additional method which allows an AbortSignal
to be provided.
import makeAsynchronous from 'make-asynchronous';
const fn = makeAsynchronous(number => {
return performExpensiveOperation(number);
});
const controller = new AbortController();
const timeoutId = setTimeout(() => {
controller.abort();
}, 1000); // 1 second timeout
const result = await fn.withSignal(controller.signal)(2);
clearTimeout(timeoutId);
console.log(result);
//=> 345342
Related
- make-synchronous - Make an asynchronous function synchronous
- sleep-synchronously - Block the main thread for a given amount of time