JSPM

Detects clicks outside React components, and also handles keypresses.

Language detection for Javascript. Based on the CLD2 (Compact Language Detector) library from Google. Highly optimized for space and speed. Runs about 10x faster than other libraries. Detects over 160 languages. Full test coverage. Runs on Linux, OS X, an

Checks the filesystem for potential license files and attempts to detect what they are

Offline and Online components for React

check if an AST node is a call to require()

Checks if the given value is an array or array-like object.

Detect the MIME type of a Buffer, Uint8Array, ArrayBuffer, ReadableStream, file path and file name, with async method.

Count syllables in English words

Detect native Symbol.iterator support.

Get the language associated with a file extension or the extensions associated with a language using the data from GitHub's [Linguist YAML file](https://github.com/github/linguist/blob/master/lib/linguist/languages.yml)

Arcjet runtime detection

It's FuckAdBlock with a minimalist API.

Check whether a file can be executed

Check if a JavaScript environment has a DOM

Check if a file path is a video file

Detect native function name support.

Provides utilities to check if ad block is enabled on a page via both a React hook and a wrapper component.

Check if a String/Buffer is TTF

Check if an Array is sorted

Get document, if there’s DOM.

Regex for matching dot-directories, like `.git/`

Check if something is a Node.js stream. This is a fork of sindresorhus/is-stream, but with CommonJS support.

Executes a command when a change is detected in specified files. Not an active file watcher.

A Svelte action that monitors an element enters or leaves the viewport or a parent element. Performant and efficient thanks to using Intersection Observer under the hood.

Check if a String/Buffer/ArrayBuffer is OTF

Utility to check if internet is connected or not

check browser and browser's version from userAgent

Detect whether the code is running in TS Node

Detects if a file is binary based on its content

Check if a Buffer is a STUN message.

Get the version of the package.json file found in the given directory or in one of its parents.

detect in-app browsers

🃏 Minimalistic isomorphic library for detection of platform, runtime, APIs and more.

Detect if the network is up (do we have connectivity?)

Detects active internet connection, and API server status in Angular application.

Check if a Buffer/Uint8Array is WOFF

JavaScript module to check if user agent to return the device and browser.

Check if a Buffer/Uint8Array is EOT

find and identify a cycle in a directed graph

Check if a buffer/Uint8Array is a woff2 file

Detect the language of text

Detect Node.JS (as opposite to browser environment) (reliable)

Check if a Buffer/Uint8Array is a FLAC file.

Detect character encoding using ICU

Regular expression matching for email addresses. Maintained, configurable, more accurate, and browser-friendly alternative to email-regex. Works in Node v14+ and browsers. Made for Spam Scanner and Forward Email.

Checks if the given value is a valid array-like index.

Detect file type by signature

Check if a Buffer/Uint8Array is a MP3 file.

Check if a Buffer/Uint8Array is a m4a file.

Check if a Buffer/Uint8Array is a wav file.

Detect structural similarities in your code

Determine whether an element is completely within the browser viewport

Discover the variable names chosen for each of a file's top-level required modules

Check if a Buffer/Uint8Array is an OGG file.

Read a glob of files, dynamically choosing the reader or requiring the files based on the file extension.

Lint HTML and template source files for hardcoded (untranslated) strings

detect available port

Detect if DevTools is open and its orientation

Quickly detect the EOL used in a string.

JavaScript/TypeScript filter and checker for bad words aka profanity

A simple, performant, and cross-browser hook for handling scroll in your next react app.

Detect native DataView support.

A small and simple utility package that can validate any kind of image. It can detect corrupt files, or invalid image urls

Detect when an element is ready in the DOM

Glin-Profanity is a lightweight and efficient npm package designed to detect and filter profane language in text inputs across multiple languages. Whether you’re building a chat application, a comment section, or any platform where user-generated content

Detect browser language

Detect image dimensions via request.

Detect native BigInt support.

Fast and native browser detection on Windows

Detect native ArrayBuffer support.

Get details about the current Continuous Integration environment

Regular expression for matching words in a string. Support for english, CJK and Cyrillic.

Library to check unused resolvers at Ovrsea

Detect the character encoding using Google’s compact_enc_det library

Converts between RSA key formats, detecting input format (PEM, DER, PKCS1, PKCS8). No OpenSSL needed.

Detect the current chrome version in the browser

Regular expresson for matching dotfiles.

Simple module for getting the current mouse position in element or window.

Detects where the current browser extension code is being run. Compatible with Firefox, Chrome and derivates.

Detect copy-pasted and structurally similar code. Supports ES2020 standard (and most proposed features), TS and TSX files. Using Babel 8's parser.

Check if a Buffer/Uint8Array is a APNG (Animated PNG) image

migration tool for sequelize & typescript users

A pitch-detection library for node and the browser

A browser detection package that uses feature detection instead of user agent

JS Library to detect browser, os and device based on the UserAgent String, forked by John Carmichael for ease of use.

Match the words in a string. Support for english, CJK and Cyrillic.

Feature detection in the browser before loading polyfill using services like polyfill.io

The React hook to detect if the device is mobile or desktop.

The simplest way for detecting HTML content.

Detect the programming language of any file.

Checks if the browser supports WebP. Cheaply and synchronously.

Adblock detector

Detect unused CSS in angular components

A React component that renders its children if an ad blocker is detected

Checks if internet is available using http2, node v8.4.0+ only

Offline and Online components for Vue

Check if a Buffer/Uint8Array is a 7ZIP file

Checks if the file path is zip file. It does not read the complete file nor it depends upon file extension

Check if Node script is running on AppVeyor

A microlibrary to detect whether Node.js runs inside a Docker container or not

Check whether or not a directory and its descendants are valid

Detects whether browser has an active internet connection or not in Angular application.

Detect the license of node.js projects and their dependencies

Check if a string is XML

Detect if Mocha is running

Scrypted CoreML Object Detection

Check if browser is Safari

Detect environment (native, server side, web, etc.)

Detect support for emoji character sets.

Check if a Buffer/Uint8Array is a RAR file

Identify the network your users are using!

Utility methods to detect runtimes and load modules dynamically.

detects node runtime

4-directional swipe detection for react-native.

Device resolution detection module

React component to detect browser

A path of the currently executed npm CLI

Detectizr is a Modernizr extension to detect device, browser, operating system and screen.

Convert a mime type to a file extension. It works only with popular mime types and it's super lightweight.

Which GitHub page are you on? Is it an issue? Is it a list? Perfect for your WebExtension or userscript.

Check if your code is running on Heroku

Scrypted Video Analysis Plugin. Installed alongside a detection service like OpenCV or TensorFlow.

Check if your code is running as an npm script

Automatically moderate your content with Moderation API

Hunt down `.only`s before it's too late.

Fork of cld with pre-built binaries for OS X and Linux. Language detection for Javascript. Based on the CLD2 (Compact Language Detector) library from Google. Highly optimized for space and speed. Runs about 10x faster than other libraries. Detects over 16

Check whether a string has any emoji

detect the properties in one lib

Superset of RESPONSIVE DIRECTIVES to show or hide items according to the size of the device screen and another features in Angular 9

Convert CSS color strings to RGBA and check whether they are light or dark

Strictly and correctly checks if value is a nodejs stream.

A CommonJS port from the ESM file-type package. Now fixed to not have 'tarHeaderChecksumMatches' error!

Check if a given string is css compatible color value

Check if a value is a Fetch network error

Detect if a Node.js process is in the debug mode.

Detect the current iOS version in the browser

Multi Languages Detection for Text-Mining and Natural Language Processing - True ITK - Open Source

Detects Dependencies In The Source File.

Check if a value is an error constructor

Scrypted OpenVINO Object Detection

Get the users' most preferred locale/language from your app's available translations with zero dependencies

Detect if a visitor is coming through a webview or a native browser using user-agent.

react network detection hooks

Detect if a string contains traditional or simplified Chinese characters.

@wora NetInfo

Modified version of Nick Drewe's tc or sc checker.

Check if a Buffer/Uint8Array is a WebP image

An *Ackchyually* browser compatible file-type hacky replacement of the `file-type` package. Forked from https://github.com/sindresorhus/file-type

Check if a Buffer/Uint8Array is a 7ZIP file

detect container resizing

Check if pnpm is available.

It's FuckAdBlock with a minimalist API.

Parse HTTP headers to detect the device type, model, operating system, browser, and crawler information

Check if a number is a HTTP success status code

Check if a `package-lock.json` is present in the working directory

Detect lockfiles in the working directory

Detect whether a terminal or browser supports ansi colors.

Synchronously check if a file is a symbolic link

Check if a project is using pnpm.

Detects browser and React Native source-code bundlers

Check if a Buffer/Uint8Array is a TIFF image

Detect raspberry pi revision

Detect the file type of a Buffer/Uint8Array in ES5 (can be used for browser and create-react-app

Check Internet Availability for your vue app

Superset of RESPONSIVE DIRECTIVES to show or hide items according to the size of the device screen and another features in Angular 2

CLI to detect the language of text

A module to verify if there's an active internet connection with Node.js

Check if a string is an IP address. This is a fork of sindresorhus/is-ip, but with CommonJS support.

Report browser settings like whatsmybrowser.org.

Call a callback when an image has loaded - adapted from desandro/imagesloaded

A device detector plugin of Vue 3

Check if a Buffer/Uint8Array is a JPEG XR image

Check if a Buffer/Uint8Array is a BMP image

Check if a Buffer/Uint8Array is a PSD image

Platform detection: NodeJS? React? ReactNative? Expo? etc.

Check if a filepath has extension(s)

A small utility to detect screen (viewport) size (resolution height and width) and listener to resize event with additional features

Server side mrz (Machine Readable Zone) scanner.

Javascript detect retina screen (javascript detect device pixel ratio / density)

Hijacks NodeJS Stream and emits events when newline(s) written to the output.

Detect the width and height of images in a stream

Make detecting user's OS less annoying

React adblock detector

Detect whether you're running on node.js or io.js

ecmascript version detector

Detect the OS from a User-Agent string.

Check if JPEG images are progressive

@wora Detect Network

Magic number detector for javascript

Check if your code is running on Travis

is-real-image is a lightweight and efficient Node.js package that allows you to verify if a file is a real image based on its extension, signature (magic number), or both. This package ensures that the provided image file is valid by checking the file's e

Classify GPU's based on their benchmark score in order to provide an adaptive experience.

Check if a Buffer/Uint8Array is a PDF file.

Check if the current web browser has any ad blockers (AdBlock, Adblock Plus, uBlock, AdGuard, ...) enabled.

JS library that detects new DOM nodes using CSS selectors

Cordova/Phonegap plugin to determine if current device is a tablet.

Scrypted ONNX Object Detection

Check if the internet connection is up. This is a fork of sindresorhus/is-online, but with CommonJS support.

Check if `npm-shrinkwrap.json` is present in the working directory

Detect the file type of a file, stream, or data

检测设备类型，根据设备类型渲染内容

A touchevent swipe detection utility for JavaScript applications.

Scrypted OpenCV Motion Detection Service.

Detects the BPM of a song or audio sample

One-file interface to detect whether your content script have loaded.

VM Detection Library for Nodejs & Electron

Detect device type and render your component according to it

Check if a Buffer is a RTP/RTCP message.

> Detect the file type of a base64 The file type is detected by checking the [magic number] of the base64.

Detect device type and render content based on device type

Uses AST to extract AMD modules, their parts and an optimized output without unused dependencies while keeping the original format.

Tiny developer-friendly JS library that provides information about host browser

0D/1D/2D/3D/4D tensors with extensible polymorphic operations and customizable storage

React componant that renders based on device

Is Env - Environment Detecter

Superset of RESPONSIVE DIRECTIVES to show or hide items according to the size of the device screen and another features in Angular 15

Live request detection for Mocha

An operator for mouse and keyboard in nodejs.

A React Hook Library for Detecting Fonts

Handy Angular package for screen detecting

ECMAScript feature and API detection

Check if a filepath is a video file in a web browser

detects support for rendering PDF in browser

Get the monitor refresh rate.

Is it a touchable device?

Detect which font your system has cherry-picked from font-family.

Detect if the browser supports the pointer events api

Detect if WebGL is enabled in the current environment.

Detect structural similarities in your code

Detects active internet connection in Angular application.

Detect whether $PAGER supports color

ESLint Plugin to forbid rendering hardcoded strings in the JSX tree

Check if a string is HTML

User agent feature detection like Device Orientation, in App Browser Detection, etc

React context provider and hook to check if the internet connection is up

Detect a string or buffer is SVG or not

A CLI tool to detect the node package manager used in a project

Detect the file type of a Buffer/Uint8Array

Detects your browser, device and platform

Detects the nearest preferred locale.

Async module that resolves when a target element has entered the viewport at a threshold, using Intersection Observer API

check if the environment supports { ...a } spread syntax

check if unicode is supported

Check whether you are connected to Network or not

Checks if the given token is an ES keyword.

Detect native WebAssembly support.

Detect SEO Bot Crawler

A JavaScript library designed to simplify the process of detecting if the Adobe Flash Player is installed in a Web Browser.

Checks if the given value is a valid array-like length.

Regular expression for matching the whitespace in a string.