A wrapper for an object with a dispose function
npm i @hazae41/disposer
- 100% TypeScript and ESM
- No external dependencies
- Create a disposable object from any object
using d = new Disposer(something, () => { ... })
await using d = new AsyncDisposer(something, async () => { ... })
You can get the inner object with .inner
or .get()
and the dispose function with .dispose
This can be useful for waiting for multiple listeners, and remove all listeners when one of them is triggered
import { Future } from "@hazae41/future"
import { Disposer } from "@hazae41/disposer"
function waitA(): Disposer<Promise<"a">> {
const future = new Future<"a">()
const onevent = () => future.resolve("a")
this.addEventListener("a", onevent)
const off = () => this.removeEventListener("a", onevent)
return new Disposer(future.promise, off)
}
function waitB(): Disposer<Promise<"b">> {
const future = new Future<"b">()
const onevent = () => future.resolve()
this.addEventListener("b", onevent)
const off = () => this.removeEventListener("b", onevent)
return new Disposer(future.promise, off)
}
async function wait() {
using a = waitA()
using b = waitB()
const x: "a" | "b" = await Promise.race([a.get(), b.get()])
/**
* All listeners will be removed
*/
}