1 | /** PURE_IMPORTS_START tslib,_innerSubscribe PURE_IMPORTS_END */
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2 | import * as tslib_1 from "tslib";
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3 | import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';
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4 | export function distinct(keySelector, flushes) {
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5 | return function (source) { return source.lift(new DistinctOperator(keySelector, flushes)); };
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6 | }
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7 | var DistinctOperator = /*@__PURE__*/ (function () {
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8 | function DistinctOperator(keySelector, flushes) {
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9 | this.keySelector = keySelector;
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10 | this.flushes = flushes;
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11 | }
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12 | DistinctOperator.prototype.call = function (subscriber, source) {
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13 | return source.subscribe(new DistinctSubscriber(subscriber, this.keySelector, this.flushes));
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14 | };
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15 | return DistinctOperator;
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16 | }());
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17 | var DistinctSubscriber = /*@__PURE__*/ (function (_super) {
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18 | tslib_1.__extends(DistinctSubscriber, _super);
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19 | function DistinctSubscriber(destination, keySelector, flushes) {
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20 | var _this = _super.call(this, destination) || this;
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21 | _this.keySelector = keySelector;
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22 | _this.values = new Set();
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23 | if (flushes) {
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24 | _this.add(innerSubscribe(flushes, new SimpleInnerSubscriber(_this)));
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25 | }
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26 | return _this;
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27 | }
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28 | DistinctSubscriber.prototype.notifyNext = function () {
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29 | this.values.clear();
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30 | };
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31 | DistinctSubscriber.prototype.notifyError = function (error) {
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32 | this._error(error);
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33 | };
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34 | DistinctSubscriber.prototype._next = function (value) {
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35 | if (this.keySelector) {
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36 | this._useKeySelector(value);
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37 | }
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38 | else {
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39 | this._finalizeNext(value, value);
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40 | }
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41 | };
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42 | DistinctSubscriber.prototype._useKeySelector = function (value) {
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43 | var key;
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44 | var destination = this.destination;
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45 | try {
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46 | key = this.keySelector(value);
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47 | }
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48 | catch (err) {
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49 | destination.error(err);
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50 | return;
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51 | }
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52 | this._finalizeNext(key, value);
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53 | };
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54 | DistinctSubscriber.prototype._finalizeNext = function (key, value) {
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55 | var values = this.values;
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56 | if (!values.has(key)) {
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57 | values.add(key);
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58 | this.destination.next(value);
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59 | }
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60 | };
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61 | return DistinctSubscriber;
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62 | }(SimpleOuterSubscriber));
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63 | export { DistinctSubscriber };
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64 | //# sourceMappingURL=distinct.js.map
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