Awesome
<div align="center"> <h1>Leffe</h1> </div> <p align="center"> <em>The <strong>L</strong>abeled <strong>Eff</strong>ects <strong>E</strong>xtension to PureScript</em> </p> <hr>PureScript's Eff type is really nice. Sometimes, however, you might want to
associate resources with side-effects, such as file descriptors, sockets, or
byte buffer. Manually passing around such resources to related side-effecting
operations is error-prone, and the compiler might not be able to catch your
mistakes. With Leffe, resources are bundled into the monadic side-effecting
operations, and thus safe from being passed around incorrectly.
This library is highly experimental at this stage, and should probably not be used for anything but playful things.
Example
There's a naive File module, wrapping the Node.FS module. See the usage
example.