66 lines
2.3 KiB
JavaScript
66 lines
2.3 KiB
JavaScript
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/** PURE_IMPORTS_START tslib,_OuterSubscriber,_util_subscribeToResult PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { OuterSubscriber } from '../OuterSubscriber';
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import { subscribeToResult } from '../util/subscribeToResult';
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export function distinct(keySelector, flushes) {
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return function (source) { return source.lift(new DistinctOperator(keySelector, flushes)); };
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}
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var DistinctOperator = /*@__PURE__*/ (function () {
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function DistinctOperator(keySelector, flushes) {
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this.keySelector = keySelector;
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this.flushes = flushes;
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}
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DistinctOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new DistinctSubscriber(subscriber, this.keySelector, this.flushes));
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};
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return DistinctOperator;
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}());
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var DistinctSubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(DistinctSubscriber, _super);
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function DistinctSubscriber(destination, keySelector, flushes) {
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var _this = _super.call(this, destination) || this;
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_this.keySelector = keySelector;
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_this.values = new Set();
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if (flushes) {
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_this.add(subscribeToResult(_this, flushes));
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}
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return _this;
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}
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DistinctSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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this.values.clear();
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};
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DistinctSubscriber.prototype.notifyError = function (error, innerSub) {
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this._error(error);
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};
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DistinctSubscriber.prototype._next = function (value) {
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if (this.keySelector) {
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this._useKeySelector(value);
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}
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else {
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this._finalizeNext(value, value);
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}
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};
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DistinctSubscriber.prototype._useKeySelector = function (value) {
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var key;
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var destination = this.destination;
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try {
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key = this.keySelector(value);
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}
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catch (err) {
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destination.error(err);
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return;
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}
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this._finalizeNext(key, value);
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};
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DistinctSubscriber.prototype._finalizeNext = function (key, value) {
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var values = this.values;
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if (!values.has(key)) {
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values.add(key);
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this.destination.next(value);
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}
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};
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return DistinctSubscriber;
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}(OuterSubscriber));
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export { DistinctSubscriber };
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//# sourceMappingURL=distinct.js.map
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