Allow string as Namespace

src/parser.ts

@@ -426,7 +426,13 @@ export default function parse(tokens: Token[], file: string): Parsed {
       const idx = eatToken("define");
 
       let [key] = eatText()
-      let [value] = eatText()
+      let value: string = undefined;
+      if(currentToken.type == "string") {
+         value = currentToken.value.slice(1,-1);
+         eatToken();
+      } else {
+         [value] = eatText()
+      }
 
       eatToken(";");