27 lines
No EOL
1.1 KiB
JavaScript
27 lines
No EOL
1.1 KiB
JavaScript
import { map } from './map';
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import { innerFrom } from '../observable/innerFrom';
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import { operate } from '../util/lift';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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export function exhaustMap(project, resultSelector) {
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if (resultSelector) {
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return (source) => source.pipe(exhaustMap((a, i) => innerFrom(project(a, i)).pipe(map((b, ii) => resultSelector(a, b, i, ii)))));
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}
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return operate((source, subscriber) => {
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let index = 0;
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let innerSub = null;
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let isComplete = false;
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source.subscribe(createOperatorSubscriber(subscriber, (outerValue) => {
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if (!innerSub) {
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innerSub = createOperatorSubscriber(subscriber, undefined, () => {
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innerSub = null;
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isComplete && subscriber.complete();
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});
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innerFrom(project(outerValue, index++)).subscribe(innerSub);
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}
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}, () => {
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isComplete = true;
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!innerSub && subscriber.complete();
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}));
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});
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}
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//# sourceMappingURL=exhaustMap.js.map
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