deep cloning of objects and arrays

Utilities for determining if characters belong to character classes defined by the XML specs.

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

Allows users to use generators in order to write common functions that can be both sync or async.

Callback wrapping utility

writable stream that concatenates strings or binary data and calls a callback with the result

Md5 typescript

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

Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

deterministic JSON.stringify() with custom sorting to get deterministic hashes from stringified results, with no public domain dependencies

ECMAScript AST recursive visitor

Promisify a callback-based function

JavaScript implementation of the BSER Binary Serialization

Translate ECDSA signatures between ASN.1/DER and JOSE-style concatenation

Determine if an object is a Buffer

type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

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

merge() utility function

Fast (and loose) selective `process.env` replacer using js-tokens instead of an AST

HTTP methods that node supports