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{"version":3,"file":"concatMap.js","sourceRoot":"","sources":["../../src/operator/concatMap.ts"],"names":[],"mappings":";AAAA,0BAAkD,wBAAwB,CAAC,CAAA;AAM3E,mCAAmC;AAEnC;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GA0DG;AACH,mBAAwD,OAAyD,EAC9E,cAA4F;IAC7H,MAAM,CAAC,qBAAoB,CAAC,OAAO,EAAE,cAAc,CAAC,CAAC,IAAI,CAAC,CAAC;AAC7D,CAAC;AAHe,iBAAS,YAGxB,CAAA","sourcesContent":["import { concatMap as higherOrderConcatMap } from '../operators/concatMap';\nimport { Observable, ObservableInput } from '../Observable';\n\n/* tslint:disable:max-line-length */\nexport function concatMap<T, R>(this: Observable<T>, project: (value: T, index: number) => ObservableInput<R>): Observable<R>;\nexport function concatMap<T, I, R>(this: Observable<T>, project: (value: T, index: number) => ObservableInput<I>, resultSelector: (outerValue: T, innerValue: I, outerIndex: number, innerIndex: number) => R): Observable<R>;\n/* tslint:enable:max-line-length */\n\n/**\n * Projects each source value to an Observable which is merged in the output\n * Observable, in a serialized fashion waiting for each one to complete before\n * merging the next.\n *\n * <span class=\"informal\">Maps each value to an Observable, then flattens all of\n * these inner Observables using {@link concatAll}.</span>\n *\n * <img src=\"./img/concatMap.png\" width=\"100%\">\n *\n * Returns an Observable that emits items based on applying a function that you\n * supply to each item emitted by the source Observable, where that function\n * returns an (so-called \"inner\") Observable. Each new inner Observable is\n * concatenated with the previous inner Observable.\n *\n * __Warning:__ if source values arrive endlessly and faster than their\n * corresponding inner Observables can complete, it will result in memory issues\n * as inner Observables amass in an unbounded buffer waiting for their turn to\n * be subscribed to.\n *\n * Note: `concatMap` is equivalent to `mergeMap` with concurrency parameter set\n * to `1`.\n *\n * @example <caption>For each click event, tick every second from 0 to 3, with no concurrency</caption>\n * var clicks = Rx.Observable.fromEvent(document, 'click');\n * var result = clicks.concatMap(ev => Rx.Observable.interval(1000).take(4));\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // (results are not concurrent)\n * // For every click on the \"document\" it will emit values 0 to 3 spaced\n * // on a 1000ms interval\n * // one click = 1000ms-> 0 -1000ms-> 1 -1000ms-> 2 -1000ms-> 3\n *\n * @see {@link concat}\n * @see {@link concatAll}\n * @see {@link concatMapTo}\n * @see {@link exhaustMap}\n * @see {@link mergeMap}\n * @see {@link switchMap}\n *\n * @param {function(value: T, ?index: number): ObservableInput} project A function\n * that, when applied to an item emitted by the source Observable, returns an\n * Observable.\n * @param {function(outerValue: T, innerValue: I, outerIndex: number, innerIndex: number): any} [resultSelector]\n * A function to produce the value on the output Observable based on the values\n * and the indices of the source (outer) emission and the inner Observable\n * emission. The arguments passed to this function are:\n * - `outerValue`: the value that came from the source\n * - `innerValue`: the value that came from the projected Observable\n * - `outerIndex`: the \"index\" of the value that came from the source\n * - `innerIndex`: the \"index\" of the value from the projected Observable\n * @return {Observable} An Observable that emits the result of applying the\n * projection function (and the optional `resultSelector`) to each item emitted\n * by the source Observable and taking values from each projected inner\n * Observable sequentially.\n * @method concatMap\n * @owner Observable\n */\nexport function concatMap<T, I, R>(this: Observable<T>, project: (value: T, index: number) => ObservableInput<I>,\n resultSelector?: (outerValue: T, innerValue: I, outerIndex: number, innerIndex: number) => R) {\n return higherOrderConcatMap(project, resultSelector