40 lines
1.5 KiB
JavaScript
40 lines
1.5 KiB
JavaScript
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/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { Subscriber } from '../Subscriber';
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export function defaultIfEmpty(defaultValue) {
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if (defaultValue === void 0) {
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defaultValue = null;
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}
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return function (source) { return source.lift(new DefaultIfEmptyOperator(defaultValue)); };
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}
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var DefaultIfEmptyOperator = /*@__PURE__*/ (function () {
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function DefaultIfEmptyOperator(defaultValue) {
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this.defaultValue = defaultValue;
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}
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DefaultIfEmptyOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new DefaultIfEmptySubscriber(subscriber, this.defaultValue));
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};
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return DefaultIfEmptyOperator;
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}());
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var DefaultIfEmptySubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(DefaultIfEmptySubscriber, _super);
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function DefaultIfEmptySubscriber(destination, defaultValue) {
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var _this = _super.call(this, destination) || this;
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_this.defaultValue = defaultValue;
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_this.isEmpty = true;
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return _this;
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}
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DefaultIfEmptySubscriber.prototype._next = function (value) {
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this.isEmpty = false;
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this.destination.next(value);
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};
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DefaultIfEmptySubscriber.prototype._complete = function () {
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if (this.isEmpty) {
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this.destination.next(this.defaultValue);
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}
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this.destination.complete();
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};
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return DefaultIfEmptySubscriber;
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}(Subscriber));
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//# sourceMappingURL=defaultIfEmpty.js.map
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