Example project written in JavaScript to demonstrate wasi/wasm usage and capabilities.
The project is just a very simple application that displays a message on the console.
In order to generate the wasm bytecode, this project uses Javy from Bytecode Alliance.
I leverage npm to install the javy-cli binary.
The execution of the javy compile instruction is also performed through npm.
To generate a wasi/wasm compatible image I leverage Buildah which doesn't have any additional requirements.
The Buildah command to generate build the image is the following:
buildah build --annotation "module.wasm.image/variant=compat" --platform "wasi/wasm" -t marcnuri/hello-world-of-wasm:js .For the CI pipeline (build+publish) I use the Red Hat provided GitHub actions that simplify the process: