The Labeled Effects Extension to PureScript

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.

There's a naive File module, wrapping the Node.FS module. See the usage example.

Mozilla Public License Version 2.0