node_modules/rxjs/_esm5/operators/isEmpty.js

/** PURE_IMPORTS_START .._Subscriber PURE_IMPORTS_END */
var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b)
        if (b.hasOwnProperty(p))
            d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
import { Subscriber } from '../Subscriber';
export function isEmpty() {
    return function (source) { return source.lift(new IsEmptyOperator()); };
}
var IsEmptyOperator = /*@__PURE__*/ (/*@__PURE__*/ function () {
    function IsEmptyOperator() {
    }
    IsEmptyOperator.prototype.call = function (observer, source) {
        return source.subscribe(new IsEmptySubscriber(observer));
    };
    return IsEmptyOperator;
}());
/**
 * We need this JSDoc comment for affecting ESDoc.
 * @ignore
 * @extends {Ignored}
 */
var IsEmptySubscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
    __extends(IsEmptySubscriber, _super);
    function IsEmptySubscriber(destination) {
        _super.call(this, destination);
    }
    IsEmptySubscriber.prototype.notifyComplete = function (isEmpty) {
        var destination = this.destination;
        destination.next(isEmpty);
        destination.complete();
    };
    IsEmptySubscriber.prototype._next = function (value) {
        this.notifyComplete(false);
    };
    IsEmptySubscriber.prototype._complete = function () {
        this.notifyComplete(true);
    };
    return IsEmptySubscriber;
}(Subscriber));
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