/
disposables.ts
54 lines (45 loc) · 1.33 KB
/
disposables.ts
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export function disposables() {
let disposables: Function[] = []
let queue: Function[] = []
let api = {
enqueue(fn: Function) {
queue.push(fn)
},
addEventListener<TEventName extends keyof WindowEventMap>(
element: HTMLElement | Window | Document,
name: TEventName,
listener: (event: WindowEventMap[TEventName]) => any,
options?: boolean | AddEventListenerOptions
) {
element.addEventListener(name, listener as any, options)
return api.add(() => element.removeEventListener(name, listener as any, options))
},
requestAnimationFrame(...args: Parameters<typeof requestAnimationFrame>) {
let raf = requestAnimationFrame(...args)
api.add(() => cancelAnimationFrame(raf))
},
nextFrame(...args: Parameters<typeof requestAnimationFrame>) {
api.requestAnimationFrame(() => {
api.requestAnimationFrame(...args)
})
},
setTimeout(...args: Parameters<typeof setTimeout>) {
let timer = setTimeout(...args)
api.add(() => clearTimeout(timer))
},
add(cb: () => void) {
disposables.push(cb)
},
dispose() {
for (let dispose of disposables.splice(0)) {
dispose()
}
},
async workQueue() {
for (let handle of queue.splice(0)) {
await handle()
}
},
}
return api
}