Added test from original issue.

tests/baselines/reference/cloduleWithPriorUninstantiatedModule.errors.txt

@@ -0,0 +1,21 @@
+tests/cases/compiler/cloduleWithPriorUninstantiatedModule.ts(2,8): error TS2434: A module declaration cannot be located prior to a class or function with which it is merged
+
+
+==== tests/cases/compiler/cloduleWithPriorUninstantiatedModule.ts (1 errors) ====
+    // Ambient/uninstantiated module.
+    module Moclodule {
+           ~~~~~~~~~
+!!! error TS2434: A module declaration cannot be located prior to a class or function with which it is merged
+        export interface Someinterface {
+            foo(): void;
+        }
+    }
+    
+    class Moclodule {
+    }
+    
+    // Instantiated module.
+    module Moclodule {
+        export class Manager {
+        }
+    }

tests/baselines/reference/cloduleWithPriorUninstantiatedModule.js

@@ -0,0 +1,33 @@
+//// [cloduleWithPriorUninstantiatedModule.ts]
+// Ambient/uninstantiated module.
+module Moclodule {
+    export interface Someinterface {
+        foo(): void;
+    }
+}
+
+class Moclodule {
+}
+
+// Instantiated module.
+module Moclodule {
+    export class Manager {
+    }
+}
+
+//// [cloduleWithPriorUninstantiatedModule.js]
+var Moclodule = (function () {
+    function Moclodule() {
+    }
+    return Moclodule;
+})();
+// Instantiated module.
+var Moclodule;
+(function (Moclodule) {
+    var Manager = (function () {
+        function Manager() {
+        }
+        return Manager;
+    })();
+    Moclodule.Manager = Manager;
+})(Moclodule || (Moclodule = {}));

tests/cases/compiler/cloduleWithPriorUninstantiatedModule.ts

@@ -0,0 +1,15 @@
+// Ambient/uninstantiated module.
+module Moclodule {
+    export interface Someinterface {
+        foo(): void;
+    }
+}
+
+class Moclodule {
+}
+
+// Instantiated module.
+module Moclodule {
+    export class Manager {
+    }
+}