maciejsmolinski/purescript.md

## purescript.md

      
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              purescript.md
            
          
    In the project directory:

Install global dependencies https://streamable.com/era9s

yarn global add purescript@0.11.7 psc-package pulp


Generate an example project in the current directory https://streamable.com/gcjih

pulp --psc-package init


Install web application bundler https://streamable.com/f9l56

yarn add parcel


Call purescript from JavaScript https://streamable.com/u5s49

yarn dev and pulp --watch build


package.json
{
  "dependencies": {
    "parcel": "^1.8.1"
  },
  "scripts": {
    "dev": "parcel serve src/index.html"
  }
}
src/index.html
<html>

<head>
    <title>PureScript Application</title>
</head>

<body>
    <script src="./index.js"></script>
</body>

</html>
src/index.js
const Main = require('../output/Main/index');

console.log('Hello from JavaScript');

Main.main();
src/Main.purs
module Main where

import Prelude
import Control.Monad.Eff (Eff)
import Control.Monad.Eff.Console (CONSOLE, log)

main :: forall e. Eff (console :: CONSOLE | e) Unit
main = do
  log "Hello from PureScript!"