## Flatten an array of arrays... ### or an array of arrays of arrays #### or an array of arrays of arrays of arrays ##### ...and so forth

Improved deep equality testing for Node.js and the browser.

return the first event in a set of ee/event pairs

An XML builder for node.js

Promisify a callback-based function

HTTP methods that node supports

Get the native type of a value.

JSON Schema for HTTP Archive (HAR)

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

JSDoc parser

It's react's useEffect hook, except using deep comparison on the inputs, not reference equality

Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives.

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

Check if a protocol requires a certain port number to be added to an URL.

Pluralize and singularize any word

Timing safe string compare using double HMAC

Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.

Returns true if a value is a plain object, array or function.

modernize node.js to current ECMAScript standards

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