.

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

@@ -0,0 +1,34 @@
+"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