rxjs/dist/cjs/internal/operators/defaultIfEmpty.js

Reactive Extensions for modern JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.defaultIfEmpty = void 0;
var lift_1 = require("../util/lift");
var OperatorSubscriber_1 = require("./OperatorSubscriber");
function defaultIfEmpty(defaultValue) {
    return lift_1.operate(function (source, subscriber) {
        var hasValue = false;
        source.subscribe(new OperatorSubscriber_1.OperatorSubscriber(subscriber, function (value) {
            hasValue = true;
            subscriber.next(value);
        }, function () {
            if (!hasValue) {
                subscriber.next(defaultValue);
            }
            subscriber.complete();
        }));
    });
}
exports.defaultIfEmpty = defaultIfEmpty;
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