Run native, statically-compiled apps on any platform, using WebAssembly.
Examples include AssemblyScript, Rust, C/C++, TinyGo, Zig, Virgil, WAT, etc.

This does not use Wasm3 engine. The approach is similar to WasmBoxC or RLBox:

1. Compile source code to wasm
2. Translate wasm to C using wasm2c
3. Compile produced C, link with a thin runtime implementation using the native platform toolchain

• Language/toolchain decoupling
• Resilience against attacks (RCE, Control-flow hijacking)
• Sandboxing / SFI (Software Fault Isolation)
• Enables wasm transformations, like instrumentation or gas metering
• Software-based memory virtualization
• Moderate runtime overhead (mostly depends on the source language/runtime)
  • Small performance hit (~10-30% slowdown compared to native modules)
  • Moderate binary size increase
• Highly portable

$ make APP=rust
    Finished release [optimized] target(s) in 0.00s
$ pio run -e esp32 -t upload
$ pio device monitor
Initializing WebAssembly...
🦀 Rust is running!
$ make APP=assemblyscript
    > npm run asbuild:optimized
$ pio run -e esp32 -t upload
$ pio device monitor
Initializing WebAssembly...
🚀 AssemblyScript is running!
$ make APP=tinygo
$ pio run -e esp32 -t upload
$ pio device monitor
Initializing WebAssembly...
🤖 TinyGo is running!

Ensure the required tools are in your PATH:

• WABT v1.0.36
• Binaryen v118

# AssemblyScript v0.27 (needs Node.js)
make APP=assemblyscript
# Rust 1.80.1
rustup target add wasm32-unknown-unknown
make APP=rust
# C/C++ (needs Clang)
make APP=cpp
# C99 Coremark (needs Clang)
make APP=coremark
# TinyGo v0.33.0 + Go v1.23.0
make APP=tinygo
# Zig v0.13.0
make APP=zig
# Virgil (Aeneas III-7.1632)
make APP=virgil
# WAT
make APP=wat

Resulting WASM file comparison:

# For ESP32:
pio run -e esp32 -t upload
# For ESP8266:
pio run -e esp8266 -t upload
# For Raspberry Pi Pico:
pio run -e rpi-pico -t upload
# Open serial monitor
pio device monitor --quiet

Requires particle-cli. Should work on all Particle devices i.e. Spark Core, Photon, Electron, Argon, Boron, P2 / Photon2:

particle flash MyDevice ./src/*
# Open serial monitor
particle serial monitor --follow

This project is released under The MIT License (MIT)