refactor(@angular-devkit/core): adjust rxjs type usage

clydin · hansl · commit 1a3a117b48cb · 2018-09-26T12:57:56.000-04:00
Required for upcoming upgraded to rxjs 6.3
diff --git a/packages/angular_devkit/core/src/json/schema/visitor.ts b/packages/angular_devkit/core/src/json/schema/visitor.ts
@@ -86,7 +86,7 @@ function _visitJsonRecursive<ContextT>(
             }),
             ignoreElements(),
           ),
-          observableOf(value),
+          observableOf<JsonValue>(value),
         );
       } else if (typeof value == 'object' && value !== null) {
         return concat(
