WasmScriptPoc

This is a Proof of Concept (POC) for running F# scripts in the browser using WebAssembly (WASM) via Bolero and FSharp.Compiler.Service.

Prerequisites

• .NET 9.0 SDK
• Local build of Bolero and Bolero.FCS.Build (configured in nuget.config and WasmScriptPoc.fsproj)

How to Run

1. Navigate to the project directory:

   cd WasmScriptPoc

2. Run the application:

   dotnet run

3. Open your browser to the URL shown (usually http://localhost:5xxx).

How it Works

1. The application loads.
2. It downloads necessary reference assemblies (DLLs) from the /refs endpoint (served from wwwroot/refs).
3. It initializes the FSharpChecker.
4. When you click "Compile & Run", it sends the code to the in-browser compiler.
5. The compiler parses and checks the code against the downloaded references.
6. If successful, it reports success (and would technically produce an assembly in memory/virtual FS).

Project Structure

• Main.fs: Contains the UI (Elmish), Compiler logic, and EntryPoint.
• WasmScriptPoc.fsproj: Project configuration, references local Bolero source and Bolero.FCS.Build package.
• wwwroot/refs: Directory populated with DLLs during build, used by the compiler for references.

Bolero.FCS is here: https://github.com/ingted/Bolero.FCS.Build

This Bolero FCS is based on commit: 6396a18a707b29f552373b8ff5650c98beb9bcfc of https://github.com/dotnet/fsharp Parallel compilation is removed...

Related: https://github.com/ingted/TryFSharpOnWasm10