refactor: simplify async function calls in asyncCall and Vm class

src/vm/modules/async.js

@@ -4,9 +4,13 @@ async function asyncCall(reference, args) {
     args = [args];
   }
 
-  const resJson = await reference.apply(undefined, args, {
+  const res = await reference.apply(undefined, args, {
     result: { promise: true },
   });
 
-  return JSON.parse(resJson);
+  if (typeof res === "string") {
+    return JSON.parse(res);
+  }
+
+  return res;
 }

src/vm/vm.class.ts

@@ -35,9 +35,7 @@ export class Vm {
       this.jail.setSync(
         plugin.getName(),
         new ivm.Reference(async (...args) => {
-          const res = await plugin.run(...args);
+          return await plugin.run(...args);
-
-          return res;
         })
       );
     }