Roberto Huertas
Roberto Huertas A Barcelona-based web & mobile developer wandering through cyberspace.
Organizer of bcn_rust. Currently working at Telefonica Alpha.

Create your first WebAssembly npm package

Create your first WebAssembly npm package

If you’re curious about WebAssembly probably you’ve heard of Rust and wasm-bingen.

Basically, with wasm-bingen you’re able to easily transform your Rust into WebAssembly and interop between Rust and JavaScript and the other way around.

A few months ago, wasm-pack entered into the scene with the promise of making really easy the process of creating WebAssembly npm packages. And it works. But yet web developers who are not really familiar with all the Rust ecosystem have to deal with installing Rust, setting the proper toolchain, install the wasm32-unknown-unknown target, cargo-generate

Introducing wasm-pack-npm

That’s why I created wasm-pack-npm. To make all this dependency installation a breeze.

The only thing that you have to do is this:

npm i -g wasm-pack-npm

What you’ll get

wasm-pack will check if you have already a Rust installation in your computer and will proceed to install it in case it’s not present.

The same will happen for wasm-pack.

At the moment of writing this post, wasm-pack will only work with beta or nightly toolchain so wasm-pack will set the nightly toolchain as your default and then will install the wasm32-unknown-unknown target.

Finally, as a nice to have, it will install cargo-generate for you.

Once you have everything set up, just head to the wasm-pack documentation to learn more about how to proceed. In less than 1o minutes I bet you’ll have your first WebAssembly npm package ready! :wink:

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