ReasonML + BuckleScript = 🎉

Javascript is great, because of ecosystem & tools, not because it’s maintainable out-of-the-box

Two approaches

• Flowtype & Typescript
• Elm, ClojureScript, PureScript

Types are useful

• when composing curried functions it's easy to make a mistake

React is functional

• components as functions of state
• preferably immutable
• declarative
• emphasis on first-class and higher-order functions

BuckleScript

Bloomberg

BuckleScript

Why OCaml

• Sound type system.
• Strong type inference.
• Expressive type features, like variants, modules & objects.

BuckleScript features

• dead code elimination,
• compile-time optimizations,
• readable & tiny JS output,
• preservation of code structure,
• fast iteration loop,

Syntax

Pattern matching

Modules

Currying

Mutations

Prettier

refmt

Best of two worlds

Ocaml + Javascript

Reason-React and bs-react-native