fay - Programming language

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fay is an open source programming language created in 2012 by Chris Done.

#519on PLDB

12Years Old

Download source code:

git clone https://github.com/faylang/fay

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A proper subset of Haskell that compiles to JavaScript

Tags: programming language
fay is developed on GitHub and has 1,284 stars
Early development of fay happened in https://github.com/faylang/
fay compiles to JavaScript
fay is written in Haskell, Rescript, HTML, Markdown, YAML, Bourne shell, Bash, JSON, XML

Example from the web:

{-# LANGUAGE EmptyDataDecls #-}
module Hello where

import FFI

data Event

alert :: String -> Fay ()
alert = ffi "alert(%1)"

setBodyHtml :: String -> Fay ()
setBodyHtml = ffi "document.body.innerHTML = %1"

addWindowEvent :: String -> (Event -> Fay ()) -> Fay ()
addWindowEvent = ffi "window.addEventListener(%1, %2)"

greet :: Event -> Fay ()
greet event = do
  putStrLn "The document has loaded"
  setBodyHtml "Hello HTML!"

main :: Fay ()
main = do
  putStrLn "Hello Console!"
  alert "Hello Alert!"
  addWindowEvent "load" greet