Sindre Sorhus

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`

Promisify a callback-style function

Map over promises concurrently

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

Fabulously kill processes. Cross-platform.

Linter for Awesome lists

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

Delay a promise a specified amount of time

Serialize/deserialize an error into a plain object

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

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

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

Promisify an event by waiting for it to be emitted

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

Create a promise that can be canceled

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

Get a random temporary file or directory path

Detect when an element is ready in the DOM

Minify SVG

:cow: ASCII cows

Move an array item to a different position

Generate sparklines ▁▂▃▅▂▇

Run Mocha tests

Detect the image type of a Buffer/Uint8Array

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

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

Get running processes

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

Timeout a promise after a specified amount of time

Extends minimatch.match() with support for multiple patterns

ZIP compress files

Import a module while bypassing the cache

Check whether a package or organization name is available on npm

Get your public IP address

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

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

Get metadata of a package from the npm registry

Get callsites from the V8 stack trace API

Parse yes/no like values

Useful utilities for working with Uint8Array (and Buffer)

html -> elements

Read the closest package.json file

Read and parse a JSON file

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

Pluralize a word

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

Make a synchronous function asynchronous by running it in a worker

Get the system locale

Create an error from multiple errors

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

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

Force V8 to use fast properties for an object

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

Open files in your editor at a specific line and column

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

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

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

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

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

Get the latest version of an npm package

Read a package.json file

List of English words

Check whether a package or organization name is available on npm

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

Regular expression for matching semver versions

Linkify URLs in a string

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

Merge objects using their property descriptors

Ensure a function is only called once

Use requestAnimationFrame as an async iterable, in any JavaScript environment

Find the closest package.json file

Check if a path exists

Get an available port

Check if a value is a Fetch network error

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

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

Regular expression for matching email addresses

Strip leading whitespace from each line in a string

Get the ID of the process that uses a certain port

Run JXA code and get the result

Generate sparklines ▁▂▃▅▂▇

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

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

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

Async mutex lock for managing access to a shared resource

Get yes/no-like words

Debounce a function

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

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

Run Jasmine tests in Node.js

Copy a file

Check if GitHub is down

:dog: Get popular dog names

Convert RGB color to HEX

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

Generate random numbers that are consecutively unique

Check if a string is an IP address

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

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

Throttle a function to limit its execution rate

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

Create a hash for file revving

Check if argv has a specific flag

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

Get a random ASCII cow

Check if a value is a plain object

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

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

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

Get XDG Base Directory paths

Get environment variables from the shell

Generate a random integer

Write a package.json file

Encode & decode strings, bytes, and integers to Base62

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

Replace all substring matches in a string

Strip console, alert, and debugger statements from JavaScript code

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

Generate a unique random string

Get the command history of the user's shell

Find multiple RegExp matches in a string

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

Create a deferred promise

Get a random temporary file path

Filter promises concurrently

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

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

Check if a URL is absolute

Get the $PATH from the shell

Detect the file type of a file or stdin

Parse text columns, like the output of unix commands

Simplified high resolution timing

Get the real path of the system temp directory

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

Get the first fulfilled promise that satisfies the provided testing function

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

Convert a URL to a valid filename

Lazy number range generator

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 path of the parent module

Create an array without duplicates

Decompress a HTTP response if needed

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

Get the directory of globally installed packages and binaries

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

Get consecutively unique elements from an array

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

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

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

Measure the time a promise takes to resolve

Get a random English word

Get your internal IP address

Compare URLs by first normalizing them

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

Run promise-returning & async functions in series

Get the first path that exists on disk of multiple paths

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

Get the path of the caller module

Kap plugin - Export to high-quality GIFs using Gifski

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

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

Check if your package was installed globally

Split buffers and streams into smaller chunks

Get free disk space info from `df -kP`

Create a lazily evaluated value

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

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

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

Create a transform stream using await instead of callbacks

Markdown to PDF

Define a lazily evaluated property on an object

Check if the system is in low power mode

Utilities for working with Windows Subsystem for Linux (WSL)

Start a promise chain

Extract the actual stack of an error

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

Get the set npm registry URL

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

Truncate a URL to a specific length

Get user info of an npm user

Get the default browser

Check if a project is using Yarn

List of text file extensions

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

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

Merge multiple streams into a unified stream

Check if a string is a valid filename

Get all email addresses in a string

Timeout HTTP/HTTPS requests

Ponyfill for Error#captureStackTrace

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

Check if a process is running

List of video file extensions

Get the file paths in a `vinyl` stream

Get a random item from an array

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

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

Make presentable errors

Pretty time zone: +2 or -9:30

Exit the process when the `esc` key is pressed

Import a globally installed module

🐈 Left pad a string with cats

Convert object keys from camel case

Wait for any promise to be fulfilled

Parse Server-Sent Events (SSE) from a Response

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

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

Some useful utilities I often need

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

Iterate over promises serially

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

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

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

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

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

Check if your code is running as an npm script

A better `Promise.race()`

Get the PATH environment variable key cross-platform

Regular expression for matching a shebang line

Split lines into an array of lines

Turn an object into a string of HTML attributes

Determine the East Asian Width of a Unicode character

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

Convert an Observable to a Promise

Regular expression for matching reserved filename characters

Get the fullname of the current user

Map over promises serially

Get Pokémon names

Create a MD5 hash with hex encoding

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

Regular expression for matching issue references

Get the version of a binary in semver format

Get the remote origin URL of a Git repository

Get all URLs in a text file or stdin

Get a GitHub username from an email address

Check if something is a promise

Remark plugin for adding a custom ID attribute to Markdown headers

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

Check if a Buffer/Uint8Array is a PNG image

Check if a path is inside another path

Find a file by walking up parent directories

Check if two arrays are equal

Validate the name of a custom element

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

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 whether a file can be executed

Linkify GitHub issue references

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

Get the operating system CPU architecture

Create a Vinyl file from an actual file

Returns an array filled with the specified input

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

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

Get the user's default shell

Change permissions of Vinyl files

Resolve the path of a globally installed module

Alphabetically sort an array of strings

Strip the final newline character from a string/buffer

Conditional promise catch handler

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 a string to a valid JavaScript identifier

setTimeout and setInterval that work with delays longer than 24.8 days

Remove leading, trailing and repeated whitespace from a string

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

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

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

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

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

An error subclass for wrapping non-error values

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

Check if an Array is sorted

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

Get the name of a named function

Convert a string index to its line and column position

xterm 256 color palette

Get the revved file path of a file

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

Check if JPEG images are progressive

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

Control the AnyBar app

Clone a Node.js HTTP response stream

ES2015 `Array#findIndex()` ponyfill

Node.js `http.STATUS_CODES` ponyfill

Get the passwd user entry from a username or uid

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

Merge and normalize adjacent or overlapping integer ranges

Simple wildcard matching

Get the email of an npm user

Get the version numbers of a package from the npm registry

Get a random English word

Detect whether the filesystem backing a path is case-sensitive

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

Log the value/error of a promise

Strip console, alert, and debugger statements from JavaScript code

Check if a directory is empty

Check if a Buffer/Uint8Array is a JPEG image

Parse duration strings to milliseconds

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

Regular expression for matching scoped npm package names

Upload files to or download from an FTP-server

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`

Get the default browser

Check if a value is a regular expression

Check if a URL is relative

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

Check if a string is a valid JavaScript identifier

Extracts the repo URL from a package.json object

Check if a number is a redirect HTTP status code

Split a string at one or more indices

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

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

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

Check if a path exists

Expands symbolic links and prints the resolved absolute filepath

Find mapcodes in a string

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

Check if something is a generator function

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 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

Get all emails in a text file or stdin

Check if a path is the current working directory

Exclude certain items from an array

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`

Count bytes passing through a stream

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 your public IP address

Check if a path is in the current working directory

Get user info from a GitHub username

Check if a filepath is a Markdown file

Get the path to this package - Useful for testing

Discard stdin input except for Ctrl+C

Detect the indentation of code

Like Object.keys() but also includes symbols

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

Check if you're running in Hyper

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

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

Strip the authentication part of a URL

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

Check if the current Linux session is using Wayland

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

Truncate a semver version: 1.2.3 → 1.2.0

List of Markdown file extensions

Get your PATH prepended with locally installed binaries