How to invoke Anonymous arrow function？

[maddemon]

js1

(data, user) => data.userId === user.id;

js2

async ({data}) => {
   const res = await request('/api/user/',{params:{data.userId}})
   return res;
}

js3

list => (list.map(item=>item.id))

engine.Execute(code);
engine.Invoke(functionName??, params);

[maddemon]

modify code

export const func = xxx

import code as modules

engine.Modules.Add("func",code);
var func = engine.Modules.Import("func");
const f = func.Get("func");
engine.Invoke(f, []);

2.Convert the arrow function into a regular function and give it a name？

[maddemon]

var f = engine.Evaluate(code);
engine.Invoke(f,[])