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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
import { toSubscriber } from './util/toSubscriber';
import { observable as Symbol_observable } from '../internal/symbol/observable';
import { pipeFromArray } from './util/pipe';
import { config } from './config';
export class Observable {
constructor(subscribe) {
this._isScalar = false;
if (subscribe) {
this._subscribe = subscribe;
}
}
lift(operator) {
const observable = new Observable();
observable.source = this;
observable.operator = operator;
return observable;
}
subscribe(observerOrNext, error, complete) {
const { operator } = this;
const sink = toSubscriber(observerOrNext, error, complete);
if (operator) {
operator.call(sink, this.source);
}
else {
sink._addParentTeardownLogic(this.source || (config.useDeprecatedSynchronousErrorHandling && !sink.syncErrorThrowable) ?
this._subscribe(sink) :
this._trySubscribe(sink));
}
if (config.useDeprecatedSynchronousErrorHandling) {
if (sink.syncErrorThrowable) {
sink.syncErrorThrowable = false;
if (sink.syncErrorThrown) {
throw sink.syncErrorValue;
}
}
}
return sink;
}
_trySubscribe(sink) {
try {
return this._subscribe(sink);
}
catch (err) {
if (config.useDeprecatedSynchronousErrorHandling) {
sink.syncErrorThrown = true;
sink.syncErrorValue = err;
}
sink.error(err);
}
}
forEach(next, promiseCtor) {
promiseCtor = getPromiseCtor(promiseCtor);
return new promiseCtor((resolve, reject) => {
let subscription;
subscription = this.subscribe((value) => {
try {
next(value);
}
catch (err) {
reject(err);
if (subscription) {
subscription.unsubscribe();
}
}
}, reject, resolve);
});
}
_subscribe(subscriber) {
const { source } = this;
return source && source.subscribe(subscriber);
}
[Symbol_observable]() {
return this;
}
pipe(...operations) {
if (operations.length === 0) {
return this;
}
return pipeFromArray(operations)(this);
}
toPromise(promiseCtor) {
promiseCtor = getPromiseCtor(promiseCtor);
return new promiseCtor((resolve, reject) => {
let value;
this.subscribe((x) => value = x, (err) => reject(err), () => resolve(value));
});
}
}
Observable.create = (subscribe) => {
return new Observable(subscribe);
};
function getPromiseCtor(promiseCtor) {
if (!promiseCtor) {
promiseCtor = config.Promise || Promise;
}
if (!promiseCtor) {
throw new Error('no Promise impl found');
}
return promiseCtor;
}
//# sourceMappingURL=Observable.js.map
|
