2025-12-24-introducing-t-ruby.md

slug	introducing-t-ruby
title	Introducing T-Ruby
authors	t-ruby-team
tags	announcement

We're excited to introduce T-Ruby, a TypeScript-style static type system for Ruby.

T-Ruby brings the familiar TypeScript development experience to Ruby developers, allowing you to add type annotations directly in your code and catch type errors before runtime.

Key Features

• TypeScript-style syntax: Familiar type annotation syntax for TypeScript developers
• Gradual typing: Add types incrementally to your existing Ruby codebase
• RBS generation: Automatically generate .rbs signature files
• Zero runtime overhead: Types are stripped at compile time

Getting Started

Install T-Ruby and start adding types to your Ruby code:

gem install t-ruby

Create your first .trb file:

def greet(name: String): String
  "Hello, #{name}!"
end

Compile to Ruby:

trc greet.trb

Check out our documentation to learn more!