| import { OuterSubscriber } from '../OuterSubscriber'; |
| import { subscribeToResult } from '../util/subscribeToResult'; |
| export function distinct(keySelector, flushes) { |
| return (source) => source.lift(new DistinctOperator(keySelector, flushes)); |
| } |
| class DistinctOperator { |
| constructor(keySelector, flushes) { |
| this.keySelector = keySelector; |
| this.flushes = flushes; |
| } |
| call(subscriber, source) { |
| return source.subscribe(new DistinctSubscriber(subscriber, this.keySelector, this.flushes)); |
| } |
| } |
| export class DistinctSubscriber extends OuterSubscriber { |
| constructor(destination, keySelector, flushes) { |
| super(destination); |
| this.keySelector = keySelector; |
| this.values = new Set(); |
| if (flushes) { |
| this.add(subscribeToResult(this, flushes)); |
| } |
| } |
| notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) { |
| this.values.clear(); |
| } |
| notifyError(error, innerSub) { |
| this._error(error); |
| } |
| _next(value) { |
| if (this.keySelector) { |
| this._useKeySelector(value); |
| } |
| else { |
| this._finalizeNext(value, value); |
| } |
| } |
| _useKeySelector(value) { |
| let key; |
| const { destination } = this; |
| try { |
| key = this.keySelector(value); |
| } |
| catch (err) { |
| destination.error(err); |
| return; |
| } |
| this._finalizeNext(key, value); |
| } |
| _finalizeNext(key, value) { |
| const { values } = this; |
| if (!values.has(key)) { |
| values.add(key); |
| this.destination.next(value); |
| } |
| } |
| } |
| //# sourceMappingURL=distinct.js.map |