| 1 | import { map } from './map';
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| 2 | import { from } from '../observable/from';
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| 3 | import { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';
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| 4 | export function exhaustMap(project, resultSelector) {
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| 5 | if (resultSelector) {
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| 6 | return (source) => source.pipe(exhaustMap((a, i) => from(project(a, i)).pipe(map((b, ii) => resultSelector(a, b, i, ii)))));
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| 7 | }
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| 8 | return (source) => source.lift(new ExhaustMapOperator(project));
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| 9 | }
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| 10 | class ExhaustMapOperator {
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| 11 | constructor(project) {
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| 12 | this.project = project;
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| 13 | }
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| 14 | call(subscriber, source) {
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| 15 | return source.subscribe(new ExhaustMapSubscriber(subscriber, this.project));
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| 16 | }
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| 17 | }
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| 18 | class ExhaustMapSubscriber extends SimpleOuterSubscriber {
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| 19 | constructor(destination, project) {
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| 20 | super(destination);
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| 21 | this.project = project;
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| 22 | this.hasSubscription = false;
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| 23 | this.hasCompleted = false;
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| 24 | this.index = 0;
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| 25 | }
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| 26 | _next(value) {
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| 27 | if (!this.hasSubscription) {
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| 28 | this.tryNext(value);
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| 29 | }
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| 30 | }
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| 31 | tryNext(value) {
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| 32 | let result;
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| 33 | const index = this.index++;
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| 34 | try {
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| 35 | result = this.project(value, index);
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| 36 | }
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| 37 | catch (err) {
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| 38 | this.destination.error(err);
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| 39 | return;
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| 40 | }
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| 41 | this.hasSubscription = true;
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| 42 | this._innerSub(result);
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| 43 | }
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| 44 | _innerSub(result) {
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| 45 | const innerSubscriber = new SimpleInnerSubscriber(this);
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| 46 | const destination = this.destination;
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| 47 | destination.add(innerSubscriber);
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| 48 | const innerSubscription = innerSubscribe(result, innerSubscriber);
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| 49 | if (innerSubscription !== innerSubscriber) {
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| 50 | destination.add(innerSubscription);
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| 51 | }
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| 52 | }
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| 53 | _complete() {
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| 54 | this.hasCompleted = true;
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| 55 | if (!this.hasSubscription) {
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| 56 | this.destination.complete();
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| 57 | }
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| 58 | this.unsubscribe();
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| 59 | }
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| 60 | notifyNext(innerValue) {
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| 61 | this.destination.next(innerValue);
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| 62 | }
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| 63 | notifyError(err) {
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| 64 | this.destination.error(err);
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| 65 | }
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| 66 | notifyComplete() {
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| 67 | this.hasSubscription = false;
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| 68 | if (this.hasCompleted) {
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| 69 | this.destination.complete();
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| 70 | }
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| 71 | }
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| 72 | }
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| 73 | //# sourceMappingURL=exhaustMap.js.map |
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