Sindre Sorhus

Empty the Windows recycle bin

User-friendly glob matching

Browser extension - Get notified about new GitHub notifications

Access the system clipboard (copy/paste)

Minify PNG, JPEG, GIF and SVG images

Static asset revisioning by appending content hash to filenames: `unicorn.css` → `unicorn-d41d8cd98f.css`

Map over promises concurrently

Promisify a callback-style function

Move files and folders to the trash

Check if the internet connection is up

Delete files and directories

Convert bytes to a human readable string: 1337 → 1.34 kB

Copy text to the clipboard in modern browsers (0.2 kB)

Compile Sass to CSS

Get your public IP address - very fast!

Retry a promise-returning or async function

Run shell commands

Hashing made simple. Get the hash of a buffer/string/stream/file.

Get an available TCP port

ES2015 Object.assign() ponyfill

Load multiple grunt tasks using globbing patterns

Get, set, or delete a property from a nested object using a dot path

Easily load and persist config without having to think about where and how

Delay function calls until a set time elapses after the last invocation

Linter for Awesome lists

Fabulously kill processes. Cross-platform.

Run grunt tasks concurrently

Simple “Least Recently Used” (LRU) cache

Colored symbols for various log levels

Only pass through changed files

Convert a dash/dot/underscore/space separated string to camelCase: foo-bar → fooBar

Measure the difference between two strings with the fastest JS implementation of the Levenshtein distance algorithm

Global identifiers from different JavaScript environments

Find a file or directory by walking up parent directories

Serialize/deserialize an error into a plain object

Delay a promise a specified amount of time

Escape RegExp special characters

Get the dimensions of an image

Node.js module to help you understand how your tool is being used by anonymously reporting usage metrics to Google Analytics

Stylish reporter for JSHint

&🐐; Escape a string for use in HTML or the inverse

Get Pokémon names

Simple wildcard matching

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

Convert a string to a valid safe filename

Throttle promise-returning & async functions

Access the system clipboard (copy/paste)

Generate the CSS for github-markdown-css

Make a directory and its parents if needed - Think `mkdir -p`

Copy files

Get paths for storing things like data, config, cache, etc

Promisify an event by waiting for it to be emitted

Open stuff like URLs, files, executables. Cross-platform.

Get a random temporary file or directory path

Create a promise that can be canceled

:cow: ASCII cows

Minify SVG

Detect when an element is ready in the DOM

Move an array item to a different position

Generate sparklines ▁▂▃▅▂▇

Detect the image type of a Buffer/Uint8Array

Run Mocha tests

Get superb like words

Useful utilities for working with Fetch

Check if servers are reachable

Kill all Chrome tabs to improve performance, decrease battery usage, and save memory

Get all urls in a string

Parse JSON with more helpful errors

Check whether a website is up or down

Copy files

Get a stream as a string, Buffer, ArrayBuffer or array

Check whether a website is up or down

Convert Windows backslash paths to slash paths

Get your internal IP address

Get stdin as a string or buffer

Clean up error stack traces

Get running processes

Stringify an object/array like JSON.stringify just without all the double-quotes

Delete files and directories

Make an asynchronous function synchronous

Fast CSV parser

Render/precompile Lodash templates

Filter files in a `vinyl` stream

Timeout a promise after a specified amount of time

Run some code when the process exits

Extends minimatch.match() with support for multiple patterns

ZIP compress files

Check whether a package or organization name is available on npm

Import a module while bypassing the cache

Get metadata of a package from the npm registry

Get your public IP address

Create a lazy promise that defers execution until it's awaited or when .then() or .catch() is called

Useful utilities for working with Uint8Array (and Buffer)

Make unhandled promise rejections fail loudly instead of the default silent fail

Get callsites from the V8 stack trace API

Parse yes/no like values

html -> elements

Read and parse a JSON file

Read the closest package.json file

Find the root directory of a Node.js project or npm package

Pluralize a word

Make a synchronous function asynchronous by running it in a worker

Convert a camelized string into a lowercased one with a custom separator: unicornRainbow → unicorn_rainbow

Strip console, alert, and debugger statements from JavaScript code

Import a module lazily

Create an error from multiple errors

Get the system locale

Humanize a URL: https://sindresorhus.com → sindresorhus.com

Filter out OS junk files like .DS_Store and Thumbs.db

Debounce promise-returning & async functions

Force V8 to use fast properties for an object

Stringify and write JSON to a file atomically

Get superhero names

Map object keys and values into a new object

Get your public IP address

Debug Vinyl file streams to see what files are run through your Gulp pipeline

Display the size of your project

Convert images to WebP

Make a regular expression time out if it takes too long to execute

Observe changes to the DOM using an async iterable — A nicer API for MutationObserver

Open files in your editor at a specific line and column

Regular expression for matching IP addresses

Detect the indentation of code

List of standard HTML tags

Move a file, directory, or symlink - Even works across devices

Like `Promise.all()` but for `Map` and `Object`

Sort an array on an object property

Chrome extension - Merge windows into the active one

Open the npm page, Yarn page, or GitHub repo of a package

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

Open the GitHub page of the given or current directory repo

Get the gzipped size of a file or stdin

Check if JPEG images are progressive

Markdown to HTML

Check whether a package or organization name is available on npm

Clear a module from the cache

Read a package.json file

Get the latest version of an npm package

Create a multicast stream that lets multiple consumers independently read the same data

Linkify URLs in a string

List of English words

Regular expression for matching semver versions

Delay a promise a minimum amount of time

Get the gzipped size of a string or buffer

Run AppleScript and get the result

Wait for a condition to be true

Get the real length of a string - by correctly counting astral symbols and ignoring ansi escape codes

Finds the common standard cache directory

Ensure a function is only called once

Find the closest package.json file

Use requestAnimationFrame as an async iterable, in any JavaScript environment

Get an available port

Merge objects using their property descriptors

Check if a value is a Fetch network error

Serialize objects to JSON with handling for circular references

Check if a path exists

Round a number to a specific number of decimal places: 1.234 → 1.2

Precompile Nunjucks templates

Create a trayballoon on Windows

Let a globally installed package use a locally installed version of itself if available

Strip leading whitespace from each line in a string

Microservice to get the latest public GitHub repos from a user

Regular expression for matching email addresses

Generate sparklines ▁▂▃▅▂▇

Get the ID of the process that uses a certain port

Run JXA code and get the result

Convert a tilde path to an absolute path: ~/dev => /Users/sindresorhus/dev

Get the username of the current user

Check if a string or buffer is SVG

Parse and stringify the HTML <img> srcset attribute

Resolve the path of a module like require.resolve() but from a given path

Get an unused filename by appending a number if it exists: `file.txt` → `file (1).txt`

Convert HEX color to RGB

Get the hash of an object

Import all modules in a directory

Get yes/no-like words

Debounce a function

Empty the trash

Async mutex lock for managing access to a shared resource

Get a GitHub username from an email address

Empty the trash

A static list of the Node.js builtin modules from the latest Node.js version

Tap into a promise chain without affecting its value or state

Check if GitHub is down

Copy a file

Run Jasmine tests in Node.js

:dog: Get popular dog names

Convert RGB color to HEX

Block the main thread for a given amount of time

Get supervillain names

Read a chunk from a file

Check if a string is an IP address

Make directories and their parents if needed - Like `mkdir -p`, but cross-platform

Check if something is a Node.js stream

Generate random numbers that are consecutively unique

Delay a promise a specified amount of time

Make a synchronous function have a timeout

Strip UTF-8 byte order mark (BOM) from a string

Indent each line in a string

Sort the keys of an object

Get namespaced config from the closest package.json

Check if a local or remote port is reachable

Throttle a function to limit its execution rate

Convert a camelized/dasherized/underscored string into a humanized one: fooBar-Baz_Faz → Foo bar baz faz

Capture website screenshots

Randomize the order of items in an array

Async concurrent iterator (async forEach)

Write data to a random temporary file

Get your PATH prepended with locally installed binaries

Turn your Wi-Fi on and off

Check when the DOM has loaded like `DOMContentLoaded`

Filter object keys and values into a new object

Check if a value is a plain object

Get a random ASCII cow

Create a hash for file revving

Make unhandled promise rejections fail hard right away instead of the default silent fail

Check whether a string has any emoji

Make a function mimic another one

List of SPDX licenses

Check if argv has a specific flag

Check if a file path is an image

Control the AnyBar app

List of binary file extensions

Block users from running your app with root permissions

Remove circular references from objects

Map of nouns to their irregular plural form

Settle promises concurrently and get their fulfillment value or rejection reason with optional limited concurrency

Check if a project is using Yarn

Generate a random integer

Check if a string is HTML

Check if a Mac camera is on

Convert an absolute path to tilde path: /Users/sindresorhus/dev => ~/dev

Get XDG Base Directory paths

Get environment variables from the shell

Convert URLs to Markdown links: Extracts URLs from text → Gets their article title → Creates Markdown links

Encode & decode strings, bytes, and integers to Base62

Write a package.json file

Ensures a value is a valid error by making it one if not

Replace all substring matches in a string

Strip console, alert, and debugger statements from JavaScript code

Generate a unique random string

Get the command history of the user's shell

Find multiple RegExp matches in a string

Parse Server-Sent Events (SSE) from a Response

Detect the file type of a file or stdin

Create a deferred promise

Turn your Wi-Fi on and off

Check whether a request can be retried based on the `error.code`

Check if a path is a file, directory, or symlink

Check if a string is a URL

Import a module like with `require()` but from a given path

Get a random temporary file path

Parse text columns, like the output of unix commands

Filter promises concurrently

Simplified high resolution timing

Get the real path of the system temp directory

Check if a URL is absolute

Get the $PATH from the shell

Get the first fulfilled promise that satisfies the provided testing function

Check if it's the first time the process is run

Strip comments from JSON. Lets you use comments in your JSON files!

Convert a URL to a valid filename

Lazy number range generator

Get the directory of globally installed packages and binaries

Find a file or directory by walking up parent directories — Zero dependencies

Create an array without duplicates

Get the path of the parent module

Hashing made simple. Get the hash of text or stdin.

Check if the process is running as root user, for example, one started with `sudo`

Wrapper for the Windows `tasklist` command. Returns a list of apps and services with their Process ID (PID) for all tasks running on either a local or a remote computer.

Get consecutively unique elements from an array

Decompress a HTTP response if needed

Embed data in other data and easily extract it when needed

Powerful ESLint rules for package.json

Simple micro templating

Easily handle defaults for your options

Boilerplate to kickstart creating Gulp plugins

Get your internal IP address

Reduce a list of values using promises into a promise for a value

Compare URLs by first normalizing them

Get a random English word

Measure the time a promise takes to resolve

Check if your package was installed globally

Prepend `https://` to humanized URLs like `sindresorhus.com` and `localhost`

Resolve the path of a module like `require.resolve()` but from the current working directory

Trim newlines from the start and/or end of a string

Get the path of the caller module

Kap plugin - Export to high-quality GIFs using Gifski

Get the first path that exists on disk of multiple paths

Split buffers and streams into smaller chunks

Utilities for working with Windows Subsystem for Linux (WSL)

Returns a promise resolved in the next event loop - think `setImmediate()`

Run promise-returning & async functions in series

Get metadata about the active window (title, id, bounds, owner, URL, etc)

Create a lazily evaluated value

Convert bytes to a human readable string: 1337 → 1.34 kB

Check if your code is running as an npm or yarn script

Check if the system is in low power mode

Markdown to PDF

Get free disk space info from `df -kP`

Define a lazily evaluated property on an object

Create a transform stream using await instead of callbacks

Change the skin tone of an emoji

Reveal a file in the system file manager (Finder, Explorer, etc.)

Get the set npm registry URL

Convert a file path to a file URL: `unicorn.jpg` → `file:///Users/sindresorhus/unicorn.jpg`

Extract the actual stack of an error

Get the default browser

Start a promise chain

Mimic a Node.js HTTP response stream

List of text file extensions

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

Get user info of an npm user

Truncate a URL to a specific length

Check if a project is using Yarn

Get a pretty output of the original, minified, gzipped size of a string or buffer: 130 B → 91 B → 53 B (gzip)

Merge multiple streams into a unified stream

List of video file extensions

Convert matching double-quotes to single-quotes: `I "love" unicorns` → `I 'love' unicorns`

Get all email addresses in a string

Check if a string is a valid filename

ESLint rules for the Node.js built-in test runner (`node:test`)

Ponyfill for Error#captureStackTrace

Check if a process is running

Get the file paths in a `vinyl` stream

Timeout HTTP/HTTPS requests

Pick random items from a list

Get the latest version of an npm package

Bind all methods in an object to itself or a specified context

While a condition returns true, calls a function repeatedly, and then resolves the promise

Get a random item from an array

Some useful utilities I often need

Pretty time zone: +2 or -9:30

Make presentable errors

Convert object keys from camel case

Import a globally installed module

🐈 Left pad a string with cats

Exit the process when the `esc` key is pressed

Check if the character represented by a given Unicode code point is fullwidth

Convert the result of `process.hrtime()` to seconds, milliseconds, nanoseconds

Make a promise always fulfill with its actual fulfillment value or rejection reason

Get metadata on the default editor or a specific editor

Get the callsite of the caller function

Capitalize every word in string: unicorn cake → Unicorn Cake

Wait for any promise to be fulfilled

Determine the East Asian Width of a Unicode character

Strip redundant indentation and indent the string

Detect the dominant newline character of a string

Get the name of a Windows version from the release number: 5.1.2600 → XP

Lax URL parsing with support for protocol-less URLs and IPs

Open files in your editor at a specific line and column

Resolve the path of a package regardless of it having an entry point

Get tags from a remote git repo. Using only JS. No git binary required.

Check if a Mac camera is on

Get a list of npm packages with keywords

Run promise-returning & async functions repeatedly until you end it

Iterate over promises serially

Turn an object into a string of HTML attributes

Check if your code is running as an npm script

Convert an Observable to a Promise

Get the arguments of a function, arrow function, generator function, async function

Split lines into an array of lines

Import a module like with `require()` but from the current working directory

Get Pokémon names

Regular expression for matching reserved filename characters

Check if a file path is a binary file

A better `Promise.race()`

Regular expression for matching a shebang line

Get the PATH environment variable key cross-platform

Get the fullname of the current user

Map over promises serially

Create a MD5 hash with hex encoding

Chrome extension - Clears the Downloads list 10 seconds after the last download completes to force the download button to disappear

Regular expression for matching issue references

Get the remote origin URL of a Git repository

Wrapper for the Windows `taskkill` command. Ends one or more tasks or processes.

Get a GitHub username from an email address

Get the version of a binary in semver format

Check if a Buffer/Uint8Array is a PNG image

Find semver versions in a string: `unicorn v1.2.3` → `1.2.3`

Get all URLs in a text file or stdin

Check if two arrays are equal

Check if something is a promise

Lowercase the keys of an object

Check if a path is inside another path

Validate the name of a custom element

Check if a value is an Observable

Find a file by walking up parent directories

Linkify GitHub issue references

Remark plugin for adding a custom ID attribute to Markdown headers

Measure the difference between two strings using the Levenshtein distance algorithm

Check if the operating system CPU architecture is 64-bit or 32-bit (Supports browsers)

Create an array with values that are present in the first input array but not additional ones

Rename a function

Get the user's default shell

Get the latest stable semver version from an array of versions

Rotate an array by a given number of steps

Check if a value is an object

Check whether a file can be executed

setTimeout and setInterval that work with delays longer than 24.8 days

Create a Vinyl file from an actual file

Get the operating system CPU architecture

Returns an array filled with the specified input

Check if the process is running with elevated privileges

Resolve the path of a globally installed module

Change permissions of Vinyl files

Strip comments from CSS

Mapping between standard locale identifiers and Windows locale identifiers (LCID)

Alphabetically sort an array of strings

Encode and decode Unicode escapes in a string

Strip the final newline character from a string/buffer

Wait for a specified number of promises to be fulfilled

Run promise-returning & async functions a specific number of times concurrently

Get an array of valid, sorted, and cleaned semver versions from an array of strings

Convert a string to a valid JavaScript identifier

Remove leading, trailing and repeated whitespace from a string

Conditional promise catch handler

Convert RGB color to HEX

An error subclass for wrapping non-error values

Get a Gravatar image from an identifier, such as an email

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

Change the file extension of a path

Repeat a string - fast

Generate a random float

Check if the process is running in a Continuous Integration (CI) environment

A response-like object for mocking a Node.js HTTP response stream

Create tarball from files

Check if the process is running as administrator on Windows

Invert the key/value of an object. Example: {foo: 'bar'} → {bar: 'foo'}

Calls a function repeatedly while a condition returns true and then resolves the promise

Parse/stringify contact info like `Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)`

xterm 256 color palette

Check if an Array is sorted

Convert a time string to seconds: '00:22:17' → 1337

Get the name of a named function

Get the revved file path of a file

Convert a string index to its line and column position

Control the AnyBar app

Utilities for executing PowerShell commands

Count bytes passing through a stream

Check if JPEG images are progressive

Pretty UTC datetime: `2014-01-09 06:46:01`

ES2015 `Array#findIndex()` ponyfill

Clone a Node.js HTTP response stream

Get the passwd user entry from a username or uid

Node.js `http.STATUS_CODES` ponyfill

Get user info of an npm user

Strip UTF-8 byte order mark (BOM) from a stream

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

Detect whether the filesystem backing a path is case-sensitive

Simple wildcard matching

Get the email of an npm user

Check if a filepath is a video file

Get a random temporary path

Get the version numbers of a package from the npm registry

Get a random English word

Merge and normalize adjacent or overlapping integer ranges

Check if a directory is empty

Simple `setImmediate` shim

Parse duration strings to milliseconds

Check if a value is a function

Regular expression for matching JavaScript comments

Strip console, alert, and debugger statements from JavaScript code

Check if a Buffer/Uint8Array is a JPEG image

Convert milliseconds to a human readable string: 1337000000 → 15d 11h 23m 20s

Regular expression for matching scoped npm package names

Get the user home directory with fallback to the system temp directory

Log the value/error of a promise

Encode, decode, and render GIF files

Convert matching single-quotes to double-quotes: `I 'love' unicorns` → `I "love" unicorns`

Normalize the newline characters in a string to `\n`

Upload files to or download from an FTP-server

Browser-compatible implementations of some of Node.js' URL utilities

Check if a value is a regular expression

Get the default browser

Transform the first chunk in a stream

Convert a path to a file url: `unicorn.jpg` → `file:///Users/sindresorhus/unicorn.jpg`

Check if a URL is relative

Check if a number is a redirect HTTP status code

Extracts the repo URL from a package.json object

Split a string at one or more indices

Convert matching double-quotes to single-quotes: I "love" unicorns → I 'love' unicorns

Check if a path exists

Modify the values of an object

Clone and modify a RegExp instance

Modify the source of an imported module

Find the root directory of a Node.js project or npm package

Expands symbolic links and prints the resolved absolute filepath

Check if something is a generator function

Find mapcodes in a string

Strip comments from JSON. Lets you use comments in your JSON files!

Remove or replace part of a string like Array#splice

The max amount of milliseconds you can pass to `setTimeout()`

Get the number of days in a month

Get an array of parent directories including itself

List of prototype properties for JavaScript types

Check if a string is a scoped npm package name

Check if a string is a valid JavaScript identifier

Parse and stringify file paths with line and column like `unicorn.js:8:14`

Check if a string is email like

Powerful ESLint rules for CSS

Check if a path is the current working directory

Check if a value is a Blob

Get all emails in a text file or stdin

Create a revved file path

Exclude certain items from an array

Get the number of days in a year

Validate JavaScript code and report possible syntax errors

Check if a path is in the current working directory

Get your public IP address

Get user info from a GitHub username

Check if a filepath is a Markdown file

Break out of a promise chain

Discard stdin input except for Ctrl+C

Prepend `https://` to humanized URLs like `sindresorhus.com` and `file://` to file paths

Check whether a binary version satisfies a semver range

Detect the indentation of code

Recursively create nested directories with jsftp, like mkdirp

Convert matching single-quotes to double-quotes: I 'love' unicorns => I "love" unicorns

Returns a stream of English words

Check if an Iterable is empty

List of Markdown file extensions

Check if you're running in Hyper

Strip a substring from the start/end of a string

Check if your code is running on Heroku

Like Object.keys() but also includes symbols

Debug files run through grunt

Check if a JavaScript environment has a DOM

Provides a list of reserved identifiers for JavaScript

Check if a number is in a given range

Check if a Buffer/Uint8Array is a WebP image

Strip UTF-8 byte order mark (BOM)

Check if a file path is a text file

Check if the process is running in an SSH session

Get the path to this package - Useful for testing

Left pad each line in a string

Get the name of the current operating system

Display an error in a GUI dialog

Trim a consecutively repeated substring: foo--bar---baz → foo-bar-baz

Strip the authentication part of a URL

Strip UTF-8 byte order mark (BOM) from a buffer

Find semver versions in a string: `unicorn v1.2.3` → `1.2.3`