PureScript開発の環境構築
from
PureScript
PureScript & Halogenで最小のプロジェクトを作成する
も参考
VSCode Extension
https://marketplace.visualstudio.com/items?itemName=nwolverson.ide-purescript
go to definition
https://marketplace.visualstudio.com/items?itemName=nwolverson.language-purescript
purty