blob: 0c0a66a01ef75b083d41aa6180389822b98c6ccf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
// promiseInterval - replacement for setInterval for promises, starts counting
// the interval only after a promise is done instead of immediately.
// - promiseCall is a function that returns a promise, it's called the first
// time after the first interval.
// - interval is the interval delay in ms.
export const promiseInterval = (promiseCall, interval) => {
let stopped = false
let timeout = null
const func = () => {
const promise = promiseCall()
// something unexpected happened and promiseCall did not
// return a promise, abort the loop.
if (!(promise && promise.finally)) {
console.warn('promiseInterval: promise call did not return a promise, stopping interval.')
return
}
promise.finally(() => {
if (stopped) return
timeout = window.setTimeout(func, interval)
})
}
const stopFetcher = () => {
stopped = true
window.clearTimeout(timeout)
}
timeout = window.setTimeout(func, interval)
return { stop: stopFetcher }
}
|
