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node_modules/rxjs/internal/observable/using.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var Observable_1 = require("../Observable");
+var from_1 = require("./from");
+var empty_1 = require("./empty");
+function using(resourceFactory, observableFactory) {
+    return new Observable_1.Observable(function (subscriber) {
+        var resource;
+        try {
+            resource = resourceFactory();
+        }
+        catch (err) {
+            subscriber.error(err);
+            return undefined;
+        }
+        var result;
+        try {
+            result = observableFactory(resource);
+        }
+        catch (err) {
+            subscriber.error(err);
+            return undefined;
+        }
+        var source = result ? from_1.from(result) : empty_1.EMPTY;
+        var subscription = source.subscribe(subscriber);
+        return function () {
+            subscription.unsubscribe();
+            if (resource) {
+                resource.unsubscribe();
+            }
+        };
+    });
+}
+exports.using = using;
+//# sourceMappingURL=using.js.map