34 lines
No EOL
1.3 KiB
JavaScript
34 lines
No EOL
1.3 KiB
JavaScript
"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;
|
|
//# sourceMappingURL=single.js.map
|