Assign the enumerable es6 Symbol properties from an object (or objects) to the first object passed on the arguments. Can be used as a supplement to other extend, assign or merge methods as a polyfill for the Symbols part of the es6 Object.assign method.

Easy error subclassing and stack customization

JSON.parse with context information on error

Normalize file path slashes to be unix-like forward slashes. Also condenses repeat slashes to a single slash and removes and trailing slashes unless disabled.

Caseless object set/get/has, very useful when working with HTTP headers.

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

Make a directory and its parents if needed - Think `mkdir -p`

Modern copy to clipboard. No Flash. Just 2kb

A ridiculously light-weight argument validator (now browser friendly)

Rope-based persistent sequence type

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

Keymap plugin for ProseMirror

JavaScript parser and stringifier for YAML

Add callbacks to requests in flight to avoid async duplication

OAuth 1 signing. Formerly a vendor lib in mikeal/request, now a standalone module.

Tiny milisecond conversion utility

Fuse-Box a bundler that does it right

Returns true if a string has an extglob.

Iterate over the own 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 touch(1) in node

Editing commands for ProseMirror

Cooperative scheduler for the browser environment.

internal utils for emotion

Lightweight fuzzy-search