get type of things

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

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

Wordwrap a string with ANSI escape codes

Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible

Simple RFC 6838 media type parser and formatter

Polyfill of future proposal for `util.parseArgs()`

Get the first path that exists on disk of multiple paths

Traverse JSON Schema passing each schema object to callback

Indent each line in a string

Create and parse HTTP Content-Type header

Strip redundant indentation and indent the string

Utility to parse a string bytes to bytes and vice-versa

Elegant terminal spinner

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

Constants and utilities about visitor keys to traverse AST.

An implementation of the Unicode UTS #46: Unicode IDNA Compatibility Processing

Change text, transform, animations, and even more related to STRING type objects.

Logic-less polyfill to add {{mustache}} templates to String type

JSON.parse with bigints support