js part compiles

packages/marts/js/stub_deno.ts

@@ -0,0 +1,10 @@
+export class Mize {
+  async get_config(key: string): Promise<any> {
+    return "hiiiiiii";
+  }
+  async add_opts(opts: any): Promise<void> {}
+  async add_part(part: any): Promise<void> {}
+  async report_err(err: MizeError) {}
+}
+
+type MizeError = string;