Reason (Programming Language)

Reason

Designed by	Jordan Walke
First appeared	May 16, 2016; 7 years ago (2016-05-16)[1]
License	MIT License
Filename extensions	.re, .rei
Website	{{{1}}}

Reason, also known as ReasonML, is a syntax extension and toolchain for OCaml created by Jordan Walke, who also created the React framework, at Facebook.^[2] Reason offers a syntax familiar to JavaScript programmers, and compiles to native code using OCaml's compiler toolchain. Reason code may also be compiled to JavaScript using the ReScript compiler.^[3]

The Reason community officially provides ReasonReact as a solution for React-based web applications.^[4]

BuckleScript and ReScript

Reason was originally compiled to JavaScript using the BuckleScript compiler,^[5] which was created at Bloomberg L.P.

In 2020, BuckleScript was rebranded to ReScript, essentially creating a separate language that had different syntax from Reason and only compiled to JavaScript.^[6]

The ReScript compiler continues to support Reason syntax, and the two languages share that part of the toolchain.

See also

• Elm: a functional language that uses an abstraction called ports to communicate with JavaScript
• PureScript: a strongly-typed, purely-functional programming language that compiles to JavaScript

References

External links

• ReasonReact
• on GitHub

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