Use remote JS

[AnthoDingo]

using Jint;
...
var engine = new Engine()
    .SetValue("log", new Action<object>(Console.WriteLine))
    .Execute("function hello() { return 'Hello, world!'; }");

var result = engine.Invoke("hello");
Console.WriteLine(result); // Affiche "Hello, world!"

or

using Jint;
using System.IO;
...
var engine = new Engine()
    .SetValue("log", new Action<object>(Console.WriteLine));

string jsCode = File.ReadAllText("chemin_vers_votre_fichier.js");
engine.Execute(jsCode);

var result = engine.Invoke("nom_de_la_fonction");
Console.WriteLine(result); // Affiche le résultat de la fonction JavaScript

Implement Stream