import { innerFrom } from '../observable/innerFrom';
|
import { operate } from '../util/lift';
|
import { createOperatorSubscriber } from './OperatorSubscriber';
|
export function switchMap(project, resultSelector) {
|
return operate((source, subscriber) => {
|
let innerSubscriber = null;
|
let index = 0;
|
let isComplete = false;
|
const checkComplete = () => isComplete && !innerSubscriber && subscriber.complete();
|
source.subscribe(createOperatorSubscriber(subscriber, (value) => {
|
innerSubscriber === null || innerSubscriber === void 0 ? void 0 : innerSubscriber.unsubscribe();
|
let innerIndex = 0;
|
const outerIndex = index++;
|
innerFrom(project(value, outerIndex)).subscribe((innerSubscriber = createOperatorSubscriber(subscriber, (innerValue) => subscriber.next(resultSelector ? resultSelector(value, innerValue, outerIndex, innerIndex++) : innerValue), () => {
|
innerSubscriber = null;
|
checkComplete();
|
})));
|
}, () => {
|
isComplete = true;
|
checkComplete();
|
}));
|
});
|
}
|
//# sourceMappingURL=switchMap.js.map
|
