[sickcodebruh]

Didn’t see it linked in the preview announcement, here’s the RBS syntax guide: https://github.com/ruby/rbs/blob/master/docs/syntax.md

Glanced at it from my phone but it looks good! I’m looking forward to seeing it in RubyMine. Still sad that we can’t write these in .rb files but I wonder if the plan is to go the other way, eventually permit typed code in .rbs?

Does anyone know what the story will be with third-party definitions? Are we headed towards a DefinitelyTyped style repository for Ruby?

[sosodev]

It seems like the intent is for RBS to be auto generated from other tooling. Sorbet for example lets you write inline type definitions and is planned to fully integrate with RBS.

The other good thing about RBS being in separate files is it can be integrated into a library without breaking compatibility with older Ruby versions.

[sandstrom]

I wish they'd allow both external RBS files and inline markup.