aspnetcore/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-FSharp/Program.fs

open System
open Microsoft.AspNetCore.Builder
open Microsoft.Extensions.Hosting

[<EntryPoint>]
let main args =
    let builder = WebApplication.CreateBuilder(args)
    use app = builder.Build()

    if app.Environment.IsDevelopment() then
        app.UseDeveloperExceptionPage() |> ignore

    app.MapGet("/", Func<string>(fun () -> "Hello World!")) |> ignore

    app.Run()

    0 // Exit code