Getting Started
with ReasonML
William Beard
🐦 @thewillbeard
⚡️⚡️
5 - 10 mins
Find slides & resources @ gist.github.com/wbeard
Reason
- A thin language/layer on top of OCaml
- Workflow for compiling to JS & bytecode
Why?
- Statically typed
- Functional (but can do side effects)
- Compiles to JavaScript
- Comprehensive tools
Easy to write react components
JS Workflow
Dear future self,
`yarn add` does not work.
Bucklescript
Like babel for reason
reason-react
Don't forget -make-world!
Prebaked
Mental Mapping
- Reason is a superset of OCaml == writing es2025
- Bucklescript compiles it == babel + js bindings
- bsconfig.json == package.json for deps & package info
- reason-react == react, but reason
- BuckleTypes == js bindings (like polyfills, popular node modules, etc.)
Harder parts
- Ecosystem is very new so projects are in broken states at times
- Type errors, especially function signature mismatches can be hard to parse
- Bucklescript API is documented, but not much usage documentation
reasonable-hacker-news
Follow along as I fumble around with reason
Thanks!
Getting Started with ReasonML
By willb
