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.

small debugging utility

JSON Schema for HTTP Archive (HAR)

Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.

JavaScript parser and stringifier for YAML

fs read and write streams based on minipass

A custom build of Stylis

Parse JSON with more helpful errors

internal utils for emotion

simplified stream construction

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

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

node's assert.deepEqual algorithm except for NaN being equal to NaN

React is a JavaScript library for building user interfaces.

Infer the content-type of a request.

Adds a static `extend` method to a class, to simplify inheritance. Extends the static properties, prototype properties, and descriptors from a `Parent` constructor onto `Child` constructors.

Execute shell command forwarding all stdio.

An object of css properties that don't accept values with units

A querystring parser that supports nesting and arrays, with a depth limit

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

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

Recursively mkdir, like `mkdir -p`

Regular expression for matching file names, with or without extension.

A module to smooth-scroll web pages and scrollable elements (like DIVs)