wadge is WebAssembly bridge allowing native applications invoke Wasm functions, normally provided by a Wasm runtime. Main use cases for this project are:

• Testing WebAssembly applications natively, using existing development tools (e.g. debuggers)
• Extending native applications with WebAssembly plugins

wadge provides wadge-bindgen-go utility, which walks the complete AST of your application and generates a binding file, bindings.wadge.go by default.

The bindings file utilizes //go:linkname directives to replace unimplemented functions with //go:wasmimport directives, normally provided by the runtime, using a native implementation, which invokes those imports on a WebAssembly component running in an embedded wadge instance.

For testing, Go library provides RunTest function, which plugs into the Go standard library testing framework.

wadge uses cabish to read and write values over FFI to pass to an embedded WebAssembly runtime (Wasmtime).