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