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node_modules/rxjs/_esm5/observable/NeverObservable.js

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+/** PURE_IMPORTS_START .._Observable,.._util_noop PURE_IMPORTS_END */
+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 __());
+};
+import { Observable } from '../Observable';
+import { noop } from '../util/noop';
+/**
+ * We need this JSDoc comment for affecting ESDoc.
+ * @extends {Ignored}
+ * @hide true
+ */
+export var NeverObservable = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
+    __extends(NeverObservable, _super);
+    function NeverObservable() {
+        _super.call(this);
+    }
+    /**
+     * Creates an Observable that emits no items to the Observer.
+     *
+     * <span class="informal">An Observable that never emits anything.</span>
+     *
+     * <img src="./img/never.png" width="100%">
+     *
+     * This static operator is useful for creating a simple Observable that emits
+     * neither values nor errors nor the completion notification. It can be used
+     * for testing purposes or for composing with other Observables. Please note
+     * that by never emitting a complete notification, this Observable keeps the
+     * subscription from being disposed automatically. Subscriptions need to be
+     * manually disposed.
+     *
+     * @example <caption>Emit the number 7, then never emit anything else (not even complete).</caption>
+     * function info() {
+     *   console.log('Will not be called');
+     * }
+     * var result = Rx.Observable.never().startWith(7);
+     * result.subscribe(x => console.log(x), info, info);
+     *
+     * @see {@link create}
+     * @see {@link empty}
+     * @see {@link of}
+     * @see {@link throw}
+     *
+     * @return {Observable} A "never" Observable: never emits anything.
+     * @static true
+     * @name never
+     * @owner Observable
+     */
+    NeverObservable.create = function () {
+        return new NeverObservable();
+    };
+    /** @deprecated internal use only */ NeverObservable.prototype._subscribe = function (subscriber) {
+        noop();
+    };
+    return NeverObservable;
+}(Observable));
+//# sourceMappingURL=NeverObservable.js.map