//using Microsoft.Extensions.DependencyInjection;

var serviceCollection = new ServiceCollection();
var serviceProvider = serviceCollection.AddScriptCompiler().BuildServiceProvider();
var scriptCompiler = serviceProvider.GetRequiredService<IScriptCompiler>();

var sourceCode = @"namespace MyNamespace
{
    public static class MyClass
    {
        public static string MyFunction() => ""Hello world"";
    }
}";
var result = scriptCompiler.LoadScriptToMemory
(
    sourceCode,
    Enumerable.Empty<string>(),
    new[] { "NETStandard.Library,2.0.3,.NETStandard,Version=v2.0" },
    null,
    null,
    null
);