# T-Ruby

11 Hacker News commenters recommended T-Ruby and 6 criticized it, November 2025 to November 2026. It was recommended in 2 of 13 months.

**Verdict:** Adds TypeScript-style static types to Ruby, transpiling to RBS, and people praise the idea and the documentation. Common caveat: the playground and compiler sometimes report no errors.

## Why people recommend it

- Brings TypeScript-style types to Ruby (2 comments): "it looks like they are taking the very positive lessons from Typescript and applying them to Ruby" ([source](https://news.ycombinator.com/item?id=46407086)) "IF you already know Ruby, and want the same safety as C# for instance, then this makes sense." ([source](https://news.ycombinator.com/item?id=46398373))
- Welcome change for Ruby (3 comments): "an even deeper connection, like this, looks wonderful" ([source](https://news.ycombinator.com/item?id=46398768)) "This is very cool! I like this a lot." ([source](https://news.ycombinator.com/item?id=46401202)) "this is a welcoming change with a" ([source](https://news.ycombinator.com/item?id=46399000))
- Interesting new approach to Ruby (3 comments): "hey this is pretty cool! very interesting concept to transpile to rbs." ([source](https://news.ycombinator.com/item?id=46404105)) "good on them for trying something different in the Ruby ecosystem" ([source](https://news.ycombinator.com/item?id=46398555)) "TRuby is an interesting project in that regard though" ([source](https://news.ycombinator.com/item?id=49395529))

## What people warn about

- Playground and compiler report no errors (2 comments): "The playground seems broken, I can't get it to report any kind of error." ([source](https://news.ycombinator.com/item?id=46398758)) "it doesn't compile anything or report any errors" ([source](https://news.ycombinator.com/item?id=46553614))
- Syntax seen as ugly or unwanted (2 comments): "I'd wish these guys would stop trying to ruin existing languages." ([source](https://news.ycombinator.com/item?id=46398635)) "This is objectively uglier Ruby code." ([source](https://news.ycombinator.com/item?id=46399944))

## Alternatives hackers recommend

- [Eurydice](https://hackerapproved.com/p/eurydice.md): 8 recommend
- [crustc](https://hackerapproved.com/p/crustc.md): 8 recommend
- [Scala.js](https://hackerapproved.com/p/scala-js.md): 7 recommend
- [TeaVM](https://hackerapproved.com/p/teavm.md): 7 recommend
- [C2Rust](https://hackerapproved.com/p/c2rust.md): 6 recommend

## Cite as

Hacker Approved, "T-Ruby", https://hackerapproved.com/p/t-ruby/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).