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[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / rxjs / src / internal / operators / bufferWhen.ts

diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/rxjs/src/internal/operators/bufferWhen.ts b/.config/coc/extensions/node_modules/coc-prettier/node_modules/rxjs/src/internal/operators/bufferWhen.ts
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+import { Operator } from '../Operator';
+import { Subscriber } from '../Subscriber';
+import { Observable } from '../Observable';
+import { Subscription } from '../Subscription';
+import { OuterSubscriber } from '../OuterSubscriber';
+import { InnerSubscriber } from '../InnerSubscriber';
+import { subscribeToResult } from '../util/subscribeToResult';
+import { OperatorFunction } from '../types';
+
+/**
+ * Buffers the source Observable values, using a factory function of closing
+ * Observables to determine when to close, emit, and reset the buffer.
+ *
+ * <span class="informal">Collects values from the past as an array. When it
+ * starts collecting values, it calls a function that returns an Observable that
+ * tells when to close the buffer and restart collecting.</span>
+ *
+ * ![](bufferWhen.png)
+ *
+ * Opens a buffer immediately, then closes the buffer when the observable
+ * returned by calling `closingSelector` function emits a value. When it closes
+ * the buffer, it immediately opens a new buffer and repeats the process.
+ *
+ * ## Example
+ *
+ * Emit an array of the last clicks every [1-5] random seconds
+ *
+ * ```ts
+ * import { fromEvent, interval } from 'rxjs';
+ * import { bufferWhen } from 'rxjs/operators';
+ *
+ * const clicks = fromEvent(document, 'click');
+ * const buffered = clicks.pipe(bufferWhen(() =>
+ *   interval(1000 + Math.random() * 4000)
+ * ));
+ * buffered.subscribe(x => console.log(x));
+ * ```
+ *
+ *
+ * @see {@link buffer}
+ * @see {@link bufferCount}
+ * @see {@link bufferTime}
+ * @see {@link bufferToggle}
+ * @see {@link windowWhen}
+ *
+ * @param {function(): Observable} closingSelector A function that takes no
+ * arguments and returns an Observable that signals buffer closure.
+ * @return {Observable<T[]>} An observable of arrays of buffered values.
+ * @method bufferWhen
+ * @owner Observable
+ */
+export function bufferWhen<T>(closingSelector: () => Observable<any>): OperatorFunction<T, T[]> {
+  return function (source: Observable<T>) {
+    return source.lift(new BufferWhenOperator(closingSelector));
+  };
+}
+
+class BufferWhenOperator<T> implements Operator<T, T[]> {
+
+  constructor(private closingSelector: () => Observable<any>) {
+  }
+
+  call(subscriber: Subscriber<T[]>, source: any): any {
+    return source.subscribe(new BufferWhenSubscriber(subscriber, this.closingSelector));
+  }
+}
+
+/**
+ * We need this JSDoc comment for affecting ESDoc.
+ * @ignore
+ * @extends {Ignored}
+ */
+class BufferWhenSubscriber<T> extends OuterSubscriber<T, any> {
+  private buffer: T[];
+  private subscribing: boolean = false;
+  private closingSubscription: Subscription;
+
+  constructor(destination: Subscriber<T[]>, private closingSelector: () => Observable<any>) {
+    super(destination);
+    this.openBuffer();
+  }
+
+  protected _next(value: T) {
+    this.buffer.push(value);
+  }
+
+  protected _complete() {
+    const buffer = this.buffer;
+    if (buffer) {
+      this.destination.next(buffer);
+    }
+    super._complete();
+  }
+
+  /** @deprecated This is an internal implementation detail, do not use. */
+  _unsubscribe() {
+    this.buffer = null;
+    this.subscribing = false;
+  }
+
+  notifyNext(outerValue: T, innerValue: any,
+             outerIndex: number, innerIndex: number,
+             innerSub: InnerSubscriber<T, any>): void {
+    this.openBuffer();
+  }
+
+  notifyComplete(): void {
+    if (this.subscribing) {
+      this.complete();
+    } else {
+      this.openBuffer();
+    }
+  }
+
+  openBuffer() {
+    let { closingSubscription } = this;
+
+    if (closingSubscription) {
+      this.remove(closingSubscription);
+      closingSubscription.unsubscribe();
+    }
+
+    const buffer = this.buffer;
+    if (this.buffer) {
+      this.destination.next(buffer);
+    }
+
+    this.buffer = [];
+
+    let closingNotifier;
+    try {
+      const { closingSelector } = this;
+      closingNotifier = closingSelector();
+    } catch (err) {
+      return this.error(err);
+    }
+    closingSubscription = new Subscription();
+    this.closingSubscription = closingSubscription;
+    this.add(closingSubscription);
+    this.subscribing = true;
+    closingSubscription.add(subscribeToResult(this, closingNotifier));
+    this.subscribing = false;
+  }
+}