Check if something is a generator function

unist utility to check if a node passes a test

A simple tool to check the broken links in your TSDoc comments

A little library for asserting types and values, with zero dependencies.

Check if a value is a plain object

Check whether a binary version satisfies a semver range

Detect whether the terminal supports Unicode

Check if a local or remote port is reachable

Check if a value is a regular expression

Check if the process is running inside Windows Subsystem for Linux (Bash on Windows)

Runtime library to validate data against TypeScript interfaces

A simple Node.js module to check if a TCP port is already bound.

Check if a file path is a text file

Parses and compiles CSS nth-checks to highly optimized functions.

Try to downgrade the permissions of a process with root privileges and block access if it fails

Property based testing for Vitest based on fast-check

Ensure a path doesn't contain null bytes

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

Checks the ECMAScript version of .js glob against a specified version of ECMAScript with a shell command

Property based testing for Jest based on fast-check