Check which JavaScript environment your code is running in at runtime: browser, Node.js, Bun, etc

@firebase/app-check Types

Large collection of predicates.

Check the engines and platform fields in package.json

PostHog Node.js integration

Check if stdout or stderr is interactive

JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

Check if a binary is working

Light multi-platform disk space checker without third party for Node.js

Check if a path exists

checks the all of the hyperlinks in a markdown text to determine if they are alive or dead

Build environment checking (a la autoconf) for node.js

Work with IANA language tags.

checks whether a hyperlink is alive (200 OK) or dead

Check if a value is an object

Svelte Code Checker Terminal Interface

Provides functions for detecting if the host environment supports the WebCrypto API

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

Check whether a binary version satisfies a semver range

Module to check latest PM2 version