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