EntregaFinalAV3/node_modules/rxjs/dist/cjs/internal/operators/single.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.single = void 0;
var EmptyError_1 = require("../util/EmptyError");
var SequenceError_1 = require("../util/SequenceError");
var NotFoundError_1 = require("../util/NotFoundError");
var lift_1 = require("../util/lift");
var OperatorSubscriber_1 = require("./OperatorSubscriber");
function single(predicate) {
    return lift_1.operate(function (source, subscriber) {
        var hasValue = false;
        var singleValue;
        var seenValue = false;
        var index = 0;
        source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
            seenValue = true;
            if (!predicate || predicate(value, index++, source)) {
                hasValue && subscriber.error(new SequenceError_1.SequenceError('Too many matching values'));
                hasValue = true;
                singleValue = value;
            }
        }, function () {
            if (hasValue) {
                subscriber.next(singleValue);
                subscriber.complete();
            }
            else {
                subscriber.error(seenValue ? new NotFoundError_1.NotFoundError('No matching values') : new EmptyError_1.EmptyError());
            }
        }));
    });
}
exports.single = single;
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