Runtime library for TypeScript helper functions

A regex that tokenizes JavaScript.

A small fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding.

A well-tested CSS minifier

Merge multiple objects into one, optionally creating a new cloned object. Similar to the jQuery.extend but more flexible. Works in Node.js and the browser.

Get the visual width of a string - the number of columns required to display it

Get the native type of a value.

Undo history for ProseMirror

Manipulate the HTTP Vary header

A MurmurHash2 implementation

Better streaming static file server with Range and conditional-GET support

> Simple styling in React.

Yet Another Linked List

HTTP status utility

Combines a list of arrays, returning a single array with unique values, using strict equality for comparisons.

Character detector

Standard library

ProseMirror document transformations

Extend an object with the properties of additional objects. node.js/javascript util.

Iterate over the own and inherited enumerable properties of an object, and return an object with properties that evaluate to true from the callback. Exit early by returning `false`. JavaScript/Node.js

Like JSON.stringify, but doesn't blow up on circular refs.

Convert character encodings in pure javascript.

Another JSON Schema Validator

Return true if a file path is (or has) a dotfile. Returns false if the path is a dot directory.