Rebuilding the Tower of Babel – Write Your Own Language Server with Tree-sitter
Ever stared at a niche, domain-specific language in your editor and wished for anything other than plain black-and-white text — no syntax highlighting, no auto-completion, no diagnostics, no code formatting? With the Rust ecosystem, you can change that! Rust-analyzer, ty or pyrefly are great examples of high-quality language servers and they share common crates that make it easy to speak the Language Server Protocol yourself. The secret weapon is Tree-sitter — a fast, robust parser generator that turns out to dramatically cut down the work required to build one. In this talk you'll learn how to write a Tree-sitter grammar for your own niche language, and how that unlocks writing a full custom language server: syntax highlighting, auto-completion, diagnostics, and code formatting - for any language, no matter how obscure.
