Detect Packages

Detect the archive type of a Buffer/Uint8Array

Check if a project is using Yarn

detect available port

Returns true if a file path is absolute. Does not rely on the path module and can be used as a polyfill for node.js native `path.isAbolute`.

Check if a value is an Observable

Check if a number is a redirect HTTP status code

Return true if a file path is (or has) a dotfile. Returns false if the path is a dot directory.

Regular expression for getting the root of a posix or windows filepath.

Check if stdout or stderr is interactive

Node.js implementation of port detector

Check if a file path is a text file

Check if a string matches the name of a Node.js builtin module

Checks if the given value is a window object.

Check if a string only contains alphanumeric characters

Run the Node.js binary no matter what

Detect if your code is running on an AWS Lambda server

Determine if a filename and/or buffer is text or binary. Smarter detection than the other solutions.

Check if a Buffer/Uint8Array is a PNG image

Check if a Buffer/Uint8Array is a JPEG image

Detect Node.JS (as opposite to browser environment). ESM modification