Improving the Developer Experience with the Ruby LSP - Shopify

This post details the development of the Ruby LSP, a new language server designed to enhance the developer experience for Ruby and Rails developers. It explains the motivation for a new server, focusing on performance and stability without requiring type annotations. The post outlines how language servers work using the LSP specification and JSON communication. It then dives into the Ruby LSP's implementation, explaining document synchronization and how it parses Ruby code into Abstract Syntax Trees (ASTs) using the Syntax Tree gem. Finally, it describes the use of the visitor pattern to analyze ASTs for features like Folding Range.