1 | "use strict";
|
2 |
|
3 | Object.defineProperty(exports, "__esModule", {
|
4 | value: true
|
5 | });
|
6 | exports.default = mapAsyncIterator;
|
7 |
|
8 | var _iterall = require("iterall");
|
9 |
|
10 | function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
|
11 |
|
12 |
|
13 |
|
14 |
|
15 |
|
16 | function mapAsyncIterator(iterable, callback, rejectCallback) {
|
17 | var iterator = (0, _iterall.getAsyncIterator)(iterable);
|
18 | var $return;
|
19 | var abruptClose;
|
20 |
|
21 | if (typeof iterator.return === 'function') {
|
22 | $return = iterator.return;
|
23 |
|
24 | abruptClose = function abruptClose(error) {
|
25 | var rethrow = function rethrow() {
|
26 | return Promise.reject(error);
|
27 | };
|
28 |
|
29 | return $return.call(iterator).then(rethrow, rethrow);
|
30 | };
|
31 | }
|
32 |
|
33 | function mapResult(result) {
|
34 | return result.done ? result : asyncMapValue(result.value, callback).then(iteratorResult, abruptClose);
|
35 | }
|
36 |
|
37 | var mapReject;
|
38 |
|
39 | if (rejectCallback) {
|
40 |
|
41 | var reject = rejectCallback;
|
42 |
|
43 | mapReject = function mapReject(error) {
|
44 | return asyncMapValue(error, reject).then(iteratorResult, abruptClose);
|
45 | };
|
46 | }
|
47 | |
48 |
|
49 |
|
50 |
|
51 | return _defineProperty({
|
52 | next: function next() {
|
53 | return iterator.next().then(mapResult, mapReject);
|
54 | },
|
55 | return: function _return() {
|
56 | return $return ? $return.call(iterator).then(mapResult, mapReject) : Promise.resolve({
|
57 | value: undefined,
|
58 | done: true
|
59 | });
|
60 | },
|
61 | throw: function _throw(error) {
|
62 |
|
63 | if (typeof iterator.throw === 'function') {
|
64 | return iterator.throw(error).then(mapResult, mapReject);
|
65 | }
|
66 |
|
67 | return Promise.reject(error).catch(abruptClose);
|
68 | }
|
69 | }, _iterall.$$asyncIterator, function () {
|
70 | return this;
|
71 | });
|
72 | }
|
73 |
|
74 | function asyncMapValue(value, callback) {
|
75 | return new Promise(function (resolve) {
|
76 | return resolve(callback(value));
|
77 | });
|
78 | }
|
79 |
|
80 | function iteratorResult(value) {
|
81 | return {
|
82 | value: value,
|
83 | done: false
|
84 | };
|
85 | }
|