Bring F# to WebAssembly — and beyond.

fsharp-wasm is an experimental project to build a modern:

👉 F# → WebAssembly toolchain

Including:

• Compiler pipeline
• WASM code generation
• Runtime integration
• Tooling & developer experience

WebAssembly is becoming the universal runtime for:

• 🌍 Web applications
• ⚡ Edge computing
• ☁️ Cloud-native systems

F# brings:

• strong typing
• functional programming
• safety + expressiveness

👉 Combining both unlocks a powerful new stack.

This project aims to cover:

• F# → WASM compilation
• Runtime bindings (browser / node / standalone)
• CLI & build tooling
• Example applications

This is not just a compiler.

It’s a foundation for:

• next-gen web platforms
• edge-native applications
• AI/data pipelines
• low-code / no-code systems

👉 Long-term goal: Enable declarative, high-level system design compiled to WASM

• fsharp-wasm: The core compiler (Fable-based) targeting WasmGC.
• fsharp-wasm-runtime: Lightweight helper functions for WasmGC interop.

Traditional Wasm compilation requires shipping a garbage collector in the binary. WasmGC allows us to use the browser's native GC, resulting in:

• 📉 Smaller binaries (KB instead of MB)
• ⚡ Faster startup times
• 🤝 Better integration with the JavaScript heap

We are in an early stage — this is the best time to get involved.

Areas you can help with:

• Compiler internals
  • Compiler backends (Binaryen, WAT)
  • F# AST transformations
• WASM code generation
  • WebAssembly performance optimization
• Runtime integration
• Tooling
• Documentation

👉 Check issues or open a discussion.

Let's make F# the first-class choice for WebAssembly development.

Early contributors don’t just fix bugs —
they shape the architecture and direction of the project.

• Use Discussions for ideas & questions
• Use Issues for bugs & features

🚧 Experimental / Early Stage

👉 https://github.com/fsharp-wasm/fsharp-wasm