Sindre Sorhus

User-friendly glob matching

Browser extension - Get notified about new GitHub notifications

Minify PNG, JPEG, GIF and SVG images

Access the system clipboard (copy/paste)

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

Promisify a callback-style function

Map over promises concurrently

Check if the internet connection is up

Move files and folders to the trash

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

Run grunt tasks concurrently

Fabulously kill processes. Cross-platform.

Colored symbols for various log levels

Simple “Least Recently Used” (LRU) cache

Linter for Awesome lists

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

Find a file or directory by walking up parent directories

Delay a promise a specified amount of time

Global identifiers from different JavaScript environments

Serialize/deserialize an error into a plain object

Escape RegExp special characters

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

Get the dimensions of an image

Stylish reporter for JSHint

Get Pokémon names

Simple wildcard matching

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

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

Throttle promise-returning & async functions

Convert a string to a valid safe filename

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

Promisify an event by waiting for it to be emitted

Create a promise that can be canceled

Minify SVG

Get a random temporary file or directory path

:cow: ASCII cows

Detect when an element is ready in the DOM

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

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

Move an array item to a different position

Generate sparklines ▁▂▃▅▂▇

Run Mocha tests

Get superb like words

Detect the image type of a Buffer/Uint8Array

Check if servers are reachable

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

Get all urls in a string

Check whether a website is up or down

Parse JSON with more helpful errors

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 stdin as a string or buffer

Get your internal IP address

Clean up error stack traces

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

Delete files and directories

Render/precompile Lodash templates

Fast CSV parser

Filter files in a `vinyl` stream

Make an asynchronous function synchronous

Run some code when the process exits

Extends minimatch.match() with support for multiple patterns

Timeout a promise after a specified amount of time

Import a module while bypassing the cache

Get running processes

ZIP compress files

Check whether a package or organization name is available on npm

Get your public IP address

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

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

Get metadata of a package from the npm registry

Parse yes/no like values

Get callsites from the V8 stack trace API

html -> elements

Read the closest package.json file

Useful utilities for working with Uint8Array (and Buffer)

Read and parse a JSON file

Pluralize a word

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

Strip console, alert, and debugger statements from JavaScript code

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

Create an error from multiple errors

Import a module lazily

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

Make a synchronous function asynchronous by running it in a worker

Get the system locale

Force V8 to use fast properties for an object

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

Debounce promise-returning & async functions

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

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

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

Open files in your editor at a specific line and column

Regular expression for matching IP addresses

Detect the indentation of code

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

List of standard HTML tags

Sort an array on an object property

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

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)

Chrome extension - Merge windows into the active one

Check if JPEG images are progressive

Open the GitHub page of the given or current directory repo

Get the gzipped size of a file or stdin

Markdown to HTML

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

Check whether a package or organization name is available on npm

Regular expression for matching semver versions

Linkify URLs in a string

List of English words

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

Use requestAnimationFrame as an async iterable, in any JavaScript environment

Find the closest package.json file

Ensure a function is only called once

Merge objects using their property descriptors

Check if a path exists

Serialize objects to JSON with handling for circular references

Create a trayballoon on Windows

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

Precompile Nunjucks templates

Get an available port

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

Microservice to get the latest public GitHub repos from a user

Check if a value is a Fetch network error

Regular expression for matching email addresses

Check if a string or buffer is SVG

Strip leading whitespace from each line in a string

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

Get the ID of the process that uses a certain port

Run JXA code and get the result

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

Generate sparklines ▁▂▃▅▂▇

Get the username of the current user

Parse and stringify the HTML <img> srcset attribute

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

Get the hash of an object

Convert HEX color to RGB

Import all modules in a directory

Get yes/no-like words

Debounce a function

Async mutex lock for managing access to a shared resource

Empty the trash

Empty the trash

Get a GitHub username from an email address

Tap into a promise chain without affecting its value or state

Run Jasmine tests in Node.js

Copy a file

Check if GitHub is down

:dog: Get popular dog names

Convert RGB color to HEX

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

Block the main thread for a given amount of time

Get supervillain names

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

Read a chunk from a file

Check if something is a Node.js stream

Check if a string is an IP address

Generate random numbers that are consecutively unique

Make a synchronous function have a timeout

Delay a promise a specified amount of time

Get namespaced config from the closest package.json

Indent each line in a string

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

Sort the keys of an object

Check if a local or remote port is reachable

Capture website screenshots

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

Randomize the order of items in an array

Throttle a function to limit its execution rate

Async concurrent iterator (async forEach)

Write data to a random temporary file

Turn your Wi-Fi on and off

Check when the DOM has loaded like `DOMContentLoaded`

Get your PATH prepended with locally installed binaries

Filter object keys and values into a new object

Create a hash for file revving

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

Check if argv has a specific flag

Check if a value is a plain object

Get a random ASCII cow

Check whether a string has any emoji

Make a function mimic another one

Block users from running your app with root permissions

Check if a file path is an image

List of SPDX licenses

Control the AnyBar app

List of binary file extensions

Map of nouns to their irregular plural form

Check if a project is using Yarn

Remove circular references from objects

Check if a string is HTML

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

Check if a Mac camera is on

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

Get XDG Base Directory paths

Useful utilities for working with Fetch

Generate a random integer

Get environment variables from the shell

Encode & decode strings, bytes, and integers to Base62

Write a package.json file

Replace all substring matches in a string

Strip console, alert, and debugger statements from JavaScript code

Generate a unique random string

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

Find multiple RegExp matches in a string

Get the command history of the user's shell

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

Check if a string is a URL

Turn your Wi-Fi on and off

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

Simplified high resolution timing

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

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

Check if a URL is absolute

Create a deferred promise

Get a random temporary file path

Parse text columns, like the output of unix commands

Detect the file type of a file or stdin

Get the real path of the system temp directory

Get the $PATH from the shell

Lazy number range generator

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

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

Get the path of the parent module

Filter promises concurrently

Convert a URL to a valid filename

Create an array without duplicates

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

Get the first fulfilled promise that satisfies the provided testing function

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 the directory of globally installed packages and binaries

Decompress a HTTP response if needed

Get consecutively unique elements from an array

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

Embed data in other data and easily extract it when needed

Simple micro templating

Easily handle defaults for your options

Boilerplate to kickstart creating Gulp plugins

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

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

Get a random English word

Compare URLs by first normalizing them

Kap plugin - Export to high-quality GIFs using Gifski

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

Measure the time a promise takes to resolve

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

Get your internal IP address

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

Get the path of the caller module

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

Get the first path that exists on disk of multiple paths

Check if your package was installed globally

Run promise-returning & async functions in series

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

Create a transform stream using await instead of callbacks

Create a lazily evaluated value

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

Check if the system is in low power mode

Get free disk space info from `df -kP`

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

Define a lazily evaluated property on an object

Split buffers and streams into smaller chunks

Extract the actual stack of an error

Markdown to PDF

Get the set npm registry URL

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

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

Mimic a Node.js HTTP response stream

Change the skin tone of an emoji

Start a promise chain

Check if a project is using Yarn

Truncate a URL to a specific length

Get user info of an npm user

Check if a string is a valid filename

Utilities for working with Windows Subsystem for Linux (WSL)

List of text file extensions

Get the default browser

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

Timeout HTTP/HTTPS requests

Ponyfill for Error#captureStackTrace

Get all email addresses in a string

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

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

List of video file extensions

Get the file paths in a `vinyl` stream

Get a random item from an array

Pick random items from a list

Check if a process is running

Get the latest version of an npm package

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

🐈 Left pad a string with cats

Convert object keys from camel case

Merge multiple streams into a unified stream

Make presentable errors

Pretty time zone: +2 or -9:30

Import a globally installed module

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

Exit the process when the `esc` key is pressed

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

Get the callsite of the caller function

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

Wait for any promise to be fulfilled

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

Detect the dominant newline character of a string

Get metadata on the default editor or a specific editor

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

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

Strip redundant indentation and indent the string

Open files in your editor at a specific line and column

Capitalize every word in string: unicorn cake → Unicorn Cake

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

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

Check if a Mac camera is on

Get a list of npm packages with keywords

Iterate over promises serially

Check if your code is running as an npm script

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

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

Get Pokémon names

Regular expression for matching reserved filename characters

Get the PATH environment variable key cross-platform

Regular expression for matching a shebang line

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

Check if a file path is a binary file

Create a MD5 hash with hex encoding

Convert an Observable to a Promise

A better `Promise.race()`

Get the fullname of the current user

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

Some useful utilities I often need

Turn an object into a string of HTML attributes

Map over promises serially

Split lines into an array of lines

Regular expression for matching issue references

Get a GitHub username from an email address

Determine the East Asian Width of a Unicode character

Get the remote origin URL of a Git repository

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

Get all URLs in a text file or stdin

Check if something is a promise

Get the version of a binary in semver format

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

Check if a Buffer/Uint8Array is a PNG image

Find a file by walking up parent directories

Check if a path is inside another path

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

Validate the name of a custom element

Check whether a file can be executed

Linkify GitHub issue references

Remark plugin for adding a custom ID attribute to Markdown headers

Check if two arrays are equal

Measure the difference between two strings using the Levenshtein distance algorithm

Rename a function

Lowercase the keys of an object

Check if a value is an Observable

Check if a value is an object

Get the latest stable semver version from an array of versions

Rotate an array by a given number of steps

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

Returns an array filled with the specified input

Convert a string to a valid JavaScript identifier

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

Get the user's default shell

Change permissions of Vinyl files

Create a Vinyl file from an actual file

Alphabetically sort an array of strings

Strip the final newline character from a string/buffer

Wait for a specified number of promises to be fulfilled

Check if the process is running with elevated privileges

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

Conditional promise catch handler

Resolve the path of a globally installed module

Strip comments from CSS

Encode and decode Unicode escapes in a string

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

Convert RGB color to HEX

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

Parse Server-Sent Events (SSE) from a Response

Remove leading, trailing and repeated whitespace from a string

Change the file extension of a path

Generate a random float

Repeat a string - fast

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

Get the operating system CPU architecture

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

Check if an Array is sorted

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

Convert a string index to its line and column position

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

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

Get the name of a named function

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

An error subclass for wrapping non-error values

xterm 256 color palette

Get the revved file path of a file

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

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

Check if JPEG images are progressive

Control the AnyBar app

Clone a Node.js HTTP response stream

ES2015 `Array#findIndex()` ponyfill

Node.js `http.STATUS_CODES` ponyfill

Simple wildcard matching

Get the email of an npm user

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

Get a random temporary path

Get user info of an npm user

Get the passwd user entry from a username or uid

Get the version numbers of a package from the npm registry

Get a random English word

Merge and normalize adjacent or overlapping integer ranges

Utilities for executing PowerShell commands

Simple `setImmediate` shim

Check if a value is a function

Check if a filepath is a video file

Regular expression for matching JavaScript comments

Extracts the repo URL from a package.json object

Strip console, alert, and debugger statements from JavaScript code

Check if a directory is empty

Check if a Buffer/Uint8Array is a JPEG image

Upload files to or download from an FTP-server

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

Log the value/error of a promise

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

Transform the first chunk in a stream

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

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

Regular expression for matching scoped npm package names

Get the default browser

Check if a value is a regular expression

Parse duration strings to milliseconds

Check if a URL is relative

Check if a string is a valid JavaScript identifier

Check if a number is a redirect HTTP status code

List of prototype properties for JavaScript types

Split a string at one or more indices

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

Clone and modify a RegExp instance

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

Modify the source of an imported module

Modify the values of an object

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

Expands symbolic links and prints the resolved absolute filepath

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

Check if something is a generator function

Check if a path exists

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

Find mapcodes in a string

Get an array of parent directories including itself

Check if a string is email like

Check if a string is a scoped npm package name

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

setTimeout and setInterval that work with delays longer than 24.8 days

Check if a path is the current working directory

Get user info from a GitHub username

Create a revved file path

Get the number of days in a year

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

Check whether a binary version satisfies a semver range

Validate JavaScript code and report possible syntax errors

Check if a value is a Blob

Break out of a promise chain

Get all emails in a text file or stdin

Get your public IP address

Like Object.keys() but also includes symbols

Check if a path is in the current working directory

Check if a filepath is a Markdown file

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

Exclude certain items from an array

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

Check if you're running in Hyper

Get the path to this package - Useful for testing

Detect the indentation of code

Debug files run through grunt

Check if a JavaScript environment has a DOM

Check if your code is running on Heroku

Strip a substring from the start/end of a string

Provides a list of reserved identifiers for JavaScript

Strip UTF-8 byte order mark (BOM)

Check if a number is in a given range

Check if the process is running in an SSH session

Check if a file path is a text file

Display an error in a GUI dialog

Left pad each line in a string

Check if a Buffer/Uint8Array is a WebP image

Discard stdin input except for Ctrl+C

Count bytes passing through a stream

Strip the authentication part of a URL

List of Markdown file extensions

Get the name of the current operating system

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

Check if a year is a leap year

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

Open the URL from a web shortcut file in the browser

Truncate a semver version: 1.2.3 → 1.2.0

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

Include only certain items in an array

Get the avatar of a GitHub user

Minify HTML

Get the gulp tasks from a gulp project

Revert the previous `file.path` change

Get the package.json of a package from the npm registry

Check if the current Linux session is using Wayland

Get a random key from an object

Regular expression for matching mapcodes