blob: a34bf0a8ef78d6207eb22cf8742f4a8326e6b244 (
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
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
const breakLoop = require('./breakLoop')
// for async generators
export default function asyncEachOfLimit(generator, limit, iteratee, callback) {
let done = false
let canceled = false
let awaiting = false
let running = 0
let idx = 0
function replenish() {
//console.log('replenish')
if (running >= limit || awaiting) return
//console.log('replenish awaiting')
awaiting = true
generator.next().then(({value, done: iterDone}) => {
//console.log('got value', value)
awaiting = false
if (iterDone) {
done = true;
if (running <= 0) {
callback(null)
}
return;
}
running++
iteratee(value, idx, iterateeCallback)
idx++
replenish()
}).catch(handleError)
}
function iterateeCallback(err, result) {
//console.log('iterateeCallback')
if (canceled) return
running -= 1;
if (err) return handleError(err)
if (err === false) {
done = true;
canceled = true;
}
if (result === breakLoop || (done && running <= 0)) {
done = true;
//console.log('done')
return callback(null);
}
replenish()
}
function handleError(err) {
awaiting = false
done = true
callback(err)
}
replenish()
}
|