Test: no declare in declaration tmp in namespace

tests/cases/compiler/declarationEmitExpressionInExtends5.ts

@@ -0,0 +1,20 @@
+// @declaration: true
+namespace Test
+{
+	export interface IFace
+	{
+	}
+
+	export class SomeClass implements IFace
+	{
+	}
+
+	export class Derived extends getClass<IFace>()
+	{
+	}
+
+	export function getClass<T>() : new() => T
+	{
+		return SomeClass as (new() => T);
+	}
+}