`ExternalClass` should be foreign
Because of line 45.
@@ -6,7 +6,7 @@ static DOME_API_v0* core;
static WREN_API_v0* wren;
static const char* source = ""
-"class ExternalClass {\n" // Source file for an external module
+"foreign class ExternalClass {\n" // Source file for an external module
"construct init() {} \n"
"foreign alert(text) \n"
"} \n";
