An Elm implementation of the pretty printing library described in Phil Wadler's paper "A Prettier Printer".
Combinators here allow you to specify how a tree gets turned into text (you can choose HTML with custom attributes, or a simple string). You can
groupto specify that a subtree should be on one line if it fits in the given width, or should have newlines if it doesn't.
Documentation is currently lacking; see
Example.elm (pictured above) for usage, or the Wadler paper for description of the combinators.
This needs some optimization — a node with 10 children is quite slow to render on window resize in the example!