优化

‘liusuyi’

2023-10-21 ae92b6823499cfab77201b4033922fa373fb37a3

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
import { Subject } from './Subject';
import { Subscription } from './Subscription';
export class AsyncSubject extends Subject {
    constructor() {
        super(...arguments);
        this.value = null;
        this.hasNext = false;
        this.hasCompleted = false;
    }
    _subscribe(subscriber) {
        if (this.hasError) {
            subscriber.error(this.thrownError);
            return Subscription.EMPTY;
        }
        else if (this.hasCompleted && this.hasNext) {
            subscriber.next(this.value);
            subscriber.complete();
            return Subscription.EMPTY;
        }
        return super._subscribe(subscriber);
    }
    next(value) {
        if (!this.hasCompleted) {
            this.value = value;
            this.hasNext = true;
        }
    }
    error(error) {
        if (!this.hasCompleted) {
            super.error(error);
        }
    }
    complete() {
        this.hasCompleted = true;
        if (this.hasNext) {
            super.next(this.value);
        }
        super.complete();
    }
}
//# sourceMappingURL=AsyncSubject.js.map