source: trip-planner-front/node_modules/promise-inflight/inflight.js@ eed0bf8

Last change on this file since eed0bf8 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 842 bytes
Line 
1'use strict'
2module.exports = inflight
3
4let Bluebird
5try {
6 Bluebird = require('bluebird')
7} catch (_) {
8 Bluebird = Promise
9}
10
11const active = {}
12inflight.active = active
13function inflight (unique, doFly) {
14 return Bluebird.all([unique, doFly]).then(function (args) {
15 const unique = args[0]
16 const doFly = args[1]
17 if (Array.isArray(unique)) {
18 return Bluebird.all(unique).then(function (uniqueArr) {
19 return _inflight(uniqueArr.join(''), doFly)
20 })
21 } else {
22 return _inflight(unique, doFly)
23 }
24 })
25
26 function _inflight (unique, doFly) {
27 if (!active[unique]) {
28 active[unique] = (new Bluebird(function (resolve) {
29 return resolve(doFly())
30 }))
31 active[unique].then(cleanup, cleanup)
32 function cleanup() { delete active[unique] }
33 }
34 return active[unique]
35 }
36}
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