type schoolPerson = Teacher | Director | Student string;
let greeting stranger =>
switch stranger {
| Teacher => "Hey professor!"
| Director => "Hello director."
| Student "Richard" => "Still here Ricky?"
| Student anyOtherName => "Hey, " ^ anyOtherName ^ "."
};Reason lets you write simple, fast and quality type safe code while leveraging both the JavaScript & OCaml ecosystems.
Types without hassle
Powerful, safe type inference means you rarely have to annotate types, but everything gets checked for you.
Easy JavaScript interop
Use packages from NPM/Yarn with minimum hassle, or even drop in a snippet of raw JavaScript while you're learning!
Flexible & Fun
Make websites, animations, games, servers, cli tools, and more! Take a look at these examples to get inspired.
JavaScript Quick Start
npm install -g bs-platform
bsb -init my-first-app -theme basic-reasonAnd then run it as usual:
cd my-first-app
npm run startIt runs in watch mode, so any changes to files will be picked up and compiled.
That's all! This compiles Reason to Javascript in the lib/js/ folder.
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Read more about how we compile to JavaScript through our partner project, BuckleScript.
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Alternatively, to start a ReasonReact app, try
bsb -init my-react-app -theme react. -
Head over to Editor Setup to get the Reason plugin for your favorite editor!
