feat: initial commit

node_modules/rxjs/internal/operators/mergeScan.d.ts

@@ -0,0 +1,72 @@
+import { Operator } from '../Operator';
+import { Subscriber } from '../Subscriber';
+import { ObservableInput, OperatorFunction } from '../types';
+import { SimpleOuterSubscriber } from '../innerSubscribe';
+/**
+ * Applies an accumulator function over the source Observable where the
+ * accumulator function itself returns an Observable, then each intermediate
+ * Observable returned is merged into the output Observable.
+ *
+ * <span class="informal">It's like {@link scan}, but the Observables returned
+ * by the accumulator are merged into the outer Observable.</span>
+ *
+ * ## Example
+ * Count the number of click events
+ * ```ts
+ * import { fromEvent, of } from 'rxjs';
+ * import { mapTo, mergeScan } from 'rxjs/operators';
+ *
+ * const click$ = fromEvent(document, 'click');
+ * const one$ = click$.pipe(mapTo(1));
+ * const seed = 0;
+ * const count$ = one$.pipe(
+ *   mergeScan((acc, one) => of(acc + one), seed),
+ * );
+ * count$.subscribe(x => console.log(x));
+ *
+ * // Results:
+ * // 1
+ * // 2
+ * // 3
+ * // 4
+ * // ...and so on for each click
+ * ```
+ *
+ * @param {function(acc: R, value: T): Observable<R>} accumulator
+ * The accumulator function called on each source value.
+ * @param seed The initial accumulation value.
+ * @param {number} [concurrent=Number.POSITIVE_INFINITY] Maximum number of
+ * input Observables being subscribed to concurrently.
+ * @return {Observable<R>} An observable of the accumulated values.
+ * @method mergeScan
+ * @owner Observable
+ */
+export declare function mergeScan<T, R>(accumulator: (acc: R, value: T, index: number) => ObservableInput<R>, seed: R, concurrent?: number): OperatorFunction<T, R>;
+export declare class MergeScanOperator<T, R> implements Operator<T, R> {
+    private accumulator;
+    private seed;
+    private concurrent;
+    constructor(accumulator: (acc: R, value: T, index: number) => ObservableInput<R>, seed: R, concurrent: number);
+    call(subscriber: Subscriber<R>, source: any): any;
+}
+/**
+ * We need this JSDoc comment for affecting ESDoc.
+ * @ignore
+ * @extends {Ignored}
+ */
+export declare class MergeScanSubscriber<T, R> extends SimpleOuterSubscriber<T, R> {
+    private accumulator;
+    private acc;
+    private concurrent;
+    private hasValue;
+    private hasCompleted;
+    private buffer;
+    private active;
+    protected index: number;
+    constructor(destination: Subscriber<R>, accumulator: (acc: R, value: T, index: number) => ObservableInput<R>, acc: R, concurrent: number);
+    protected _next(value: any): void;
+    private _innerSub;
+    protected _complete(): void;
+    notifyNext(innerValue: R): void;
+    notifyComplete(): void;
+}