I'm too dumb to understand how would this work. Can anyone explain please. Wordpress server side is where all the magic happens data is stored and retrieved from the database. How would it look like in wasm? Will the wasm communicate with database? If so wouldn't it expose db credentials? What would the backend look like? I have so many questions
https://make.wordpress.org/core/2022/09/23/client-side-webas...
To answer your questions directly:
WebAssembly is the magic sauce that transforms server-side code into client-side code. MySQL unfortunately is not yet supported by WebAssembly, so I applied a plugin that adds SQLite supports to WordPress [0]. The WebAssembly application has its own in-memory filesystem that lives in a specific browser tab and is scraped as soon as you close it.
So – technically it exposes db credentials, and even the entire DB, but that you are the only user of that DB so it's okay.
> What would the backend look like
The only backend is a static file server where the code and the database live. Your browser downloads a copy of the database and allows you to modify it in the current tab, but the updates are never saved back to the server.