This repo contains two examples.
They are minimal in the sense of doing the smallest amount of stuff in the source code. However they are not minimal in terms of size - various things could be done to reduce the output size dramatically, such as stripping debug info or running wasm-opt.
- .NET 8 SDK
- To run the output on the command line, get wasmtime and put it on your PATH
The default "Hello World" app
To build:
cd ConsoleAppdotnet build(note: takes a few mins on the first run to acquire the SDKs, but is fast after)- You now have
bin/Debug/net8.0/wasi-wasm/publish/ConsoleApp.wasm
To run:
wasmtime bin/Debug/net8.0/wasi-wasm/publish/ConsoleApp.wasm
This produces a wasm module with an export called add you can invoke from some host environment.
To build:
cd StandaloneLibrarydotnet build- You now have
bin/Debug/net8.0/wasi-wasm/publish/StandaloneLibrary.wasm
Note that this is a "reactor" module, i.e., one with imports and exports but no entrypoint. So to run code from it, you have to call a named export and pass whatever parameters it wants, e.g., to run on the CLI:
wasmtime bin/Debug/net8.0/wasi-wasm/publish/StandaloneLibrary.wasm --invoke add 123 456wasmtime bin/Debug/net8.0/wasi-wasm/publish/StandaloneLibrary.wasm --invoke subtract 123 456
... but more commonly, reactor modules are consumed by some hosting environment such as a web server that makes calls to your module's exports.