Show HN: I released a Language Server for mruby static type analyzer

3 weeks ago 2

Language Server Protocol (LSP) implementation for Ruby-TI static type analyzer.

Ruby-TI LSP provides IDE features for Ruby code using the Ruby-TI type analyzer:

Code Lens: Inline type signature display
Code Completion: Auto-complete method suggestions based on type inference
Go to Definition: Jump to method and class definitions
Diagnostics: Real-time type error detection

This project is currently in beta stage. Please do not use it in production environments. There may be bugs, incomplete features, or breaking changes in future releases.

Go 1.24.5 or later
Ruby-TI installed and available in PATH as ti command

git clone https://github.com/engneer-hamachan/ruby-ti-lsp cd ruby-ti-lsp # This will build the `ti-lsp` binary and install it to `./bin/ti-lsp`. make install

# setting binary path # fish example set -x PATH "/path/to/ruby-ti-lsp/bin:$PATH"

Use your preferred LSP plugin. Example configuration for coc.nvim(coc-settings.json):

{ "codeLens.enable": true, "codeLens.position": "eol", "codeLens.separator": " #", "languageserver": { "ruby-ti": { "command": "ti-lsp", "filetypes": ["ruby"] } } }

Install the VSCode extension:

code --install-extension /path/to/ruby-ti-lsp/vscode/ruby-ti-lsp-0.1.0.vsix

Displays inferred type signatures inline at method definitions.

Type-aware method suggestions powered by Ruby-TI's static type inference.

Navigate to method and class definitions across your codebase, following inheritance hierarchies.

Real-time type error detection. The LSP server automatically runs Ruby-TI on document changes and displays type errors inline.

MIT License - see LICENSE file for details.

This project uses the following third-party libraries: