Brooks: Earlier this year, WebAssembly components became a reality with the launch of WASI 0.2.0. At the time, I published a blog WASI 0.2.0 and Why I

Leptos and WASI 0.2 for full stack Wasm development | wasmCloud

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2024-12-13 22:30:13

Brooks: Earlier this year, WebAssembly components became a reality with the launch of WASI 0.2.0. At the time, I published a blog WASI 0.2.0 and Why It Matters where we discussed benefits from language support to standard interfaces. In October 30th's wasmCloud Wednesday, community member Enzo Nocera (@raskyld) presented his contribution to Rust's Leptos web framework that added WASI 0.2.0 support.

Since this was such an awesome demonstration of what is possible with Wasm components, we invited Enzo to discuss why he started with this project, and his goals for wasmCloud going forward!

Enzo: In reality, Leptos already leverages WebAssembly: the whole reactive system is not handled by JavaScript like you may be used to. Instead, Leptos compiles your application down into a WebAssembly module, which is loaded by a thin JavaScript shim. This is how Leptos allows you to write pure Rust code for your front-end!

But wait! Leptos is not just a reactive framework—it is also capable of producing a server binary! This binary does Server-Side Rendering (or SSR) and also allows you to define Server Functions.