Fable generates javascript that throws an exception in the browser

[klofberg]

Having a file named main.fsx with the following code and running dotnet fable:

type Model = unit

let update (model: Model) =
    model, ()

update ()

the fable compiler generates the following javascript:

export function update() {
    return [model, undefined];
}

update();

Running this code in the browser will throw an exception ReferenceError: model is not defined.

This is a problem for me in Elmish Land (https://elmish.land/docs/core-concepts/pages) where I scaffold elmish pages. The reason for the type alias for the Model is because I want to make it is easy for the user to extend the page.

I'm using fable compiler version 4.24.0 and dotnet version 9.0.101 on macos 15.0.