Create WebAssembly Components with Rust’s cargo component
In this Shortcut, I am going to show you how to use a plug-in to Rust’s cargo tool to generate and build WebAssembly components. In the “Create WebAssembly Components with wasm-tools” Shortcut, I used wasm-tools and a .wat implementation to do this. In doing so, I demonstrated that there are no intrinsic dependencies on a language such as Rust to create these components.
If you have not yet read that Shortcut, you should do so in order to better understand what I am highlighting in this one. That was a general overview of components, whereas this is a more specific way of creating and using them. Go ahead; I’ll wait.
cargo component is intended as a tool to make the interactions between Rust and WebAssembly components even more idiomatic from a Rust perspective. It will generate the project scaffolding, the necessary bindings to bridge .wit types and Rust, and support for building components. It relies on the same underlying principles I introduced in the Shortcut mentioned above, but aligns it with the Rust ecosystem more tightly.
In the GitHub repository for this Shortcut, you should enter the directory 23-Wasm-Components-Rust. In it, you will find a readme.md file describing the installation instructions for the tools so you can follow along below. You will also notice the same example-host directory that we have looked at previously; it contains an application ...
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