chore(package): re-init package with commitizen and standard-release

node_modules/rxjs/operators/single.js

@@ -0,0 +1,93 @@
+"use strict";
+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 __());
+};
+var Subscriber_1 = require('../Subscriber');
+var EmptyError_1 = require('../util/EmptyError');
+/**
+ * Returns an Observable that emits the single item emitted by the source Observable that matches a specified
+ * predicate, if that Observable emits one such item. If the source Observable emits more than one such item or no
+ * such items, notify of an IllegalArgumentException or NoSuchElementException respectively.
+ *
+ * <img src="./img/single.png" width="100%">
+ *
+ * @throws {EmptyError} Delivers an EmptyError to the Observer's `error`
+ * callback if the Observable completes before any `next` notification was sent.
+ * @param {Function} predicate - A predicate function to evaluate items emitted by the source Observable.
+ * @return {Observable<T>} An Observable that emits the single item emitted by the source Observable that matches
+ * the predicate.
+ .
+ * @method single
+ * @owner Observable
+ */
+function single(predicate) {
+    return function (source) { return source.lift(new SingleOperator(predicate, source)); };
+}
+exports.single = single;
+var SingleOperator = (function () {
+    function SingleOperator(predicate, source) {
+        this.predicate = predicate;
+        this.source = source;
+    }
+    SingleOperator.prototype.call = function (subscriber, source) {
+        return source.subscribe(new SingleSubscriber(subscriber, this.predicate, this.source));
+    };
+    return SingleOperator;
+}());
+/**
+ * We need this JSDoc comment for affecting ESDoc.
+ * @ignore
+ * @extends {Ignored}
+ */
+var SingleSubscriber = (function (_super) {
+    __extends(SingleSubscriber, _super);
+    function SingleSubscriber(destination, predicate, source) {
+        _super.call(this, destination);
+        this.predicate = predicate;
+        this.source = source;
+        this.seenValue = false;
+        this.index = 0;
+    }
+    SingleSubscriber.prototype.applySingleValue = function (value) {
+        if (this.seenValue) {
+            this.destination.error('Sequence contains more than one element');
+        }
+        else {
+            this.seenValue = true;
+            this.singleValue = value;
+        }
+    };
+    SingleSubscriber.prototype._next = function (value) {
+        var index = this.index++;
+        if (this.predicate) {
+            this.tryNext(value, index);
+        }
+        else {
+            this.applySingleValue(value);
+        }
+    };
+    SingleSubscriber.prototype.tryNext = function (value, index) {
+        try {
+            if (this.predicate(value, index, this.source)) {
+                this.applySingleValue(value);
+            }
+        }
+        catch (err) {
+            this.destination.error(err);
+        }
+    };
+    SingleSubscriber.prototype._complete = function () {
+        var destination = this.destination;
+        if (this.index > 0) {
+            destination.next(this.seenValue ? this.singleValue : undefined);
+            destination.complete();
+        }
+        else {
+            destination.error(new EmptyError_1.EmptyError);
+        }
+    };
+    return SingleSubscriber;
+}(Subscriber_1.Subscriber));
+//# sourceMappingURL=single.js.map