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sindresorhus repositories

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sindresorhus/is-htmlJavaScript

Check if a string is HTML

Last commit Sep 9, 2025

 (95 stars) (11 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-hyperJavaScript

Check if you're running in Hyper

Last commit Apr 30, 2024

 (24 stars) (2 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-identifierJavaScript

Check if a string is a valid JavaScript identifier

Last commit Jul 12, 2024

 (29 stars) (2 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-imageJavaScript

Check if a file path is an image

Last commit Jul 25, 2023

 (99 stars) (11 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-in-ciJavaScript

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

Last commit Aug 17, 2025

 (39 stars) (3 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-in-sshJavaScript

Check if the process is running in an SSH session

Last commit Feb 13, 2026

 (23 stars) (2 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-inside-containerJavaScript

Check if the process is running inside a container (Docker/Podman)

Last commit Oct 27, 2023

 (76 stars) (2 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-installed-globallyJavaScript

Check if your package was installed globally

Last commit Nov 6, 2023

 (71 stars) (5 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-interactiveJavaScript

Check if stdout or stderr is interactive

Last commit Nov 6, 2023

 (118 stars) (5 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-ioJavaScript

[DEPRECATED] Check if the runtime is io.js instead of Node.js

Last commit May 16, 2017

 (15 stars) (1 fork) (0 indexed issues) (0 open good first issues)
sindresorhus/is-ipJavaScript

Check if a string is an IP address

Last commit Aug 5, 2023

 (118 stars) (16 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-jpgJavaScript

Check if a Buffer/Uint8Array is a JPEG image

Last commit Jul 8, 2022

 (27 stars) (9 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-jxaJavaScript

Check if your code is running in a JXA environment

Last commit Sep 18, 2021

 (33 stars) (3 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-jxrJavaScript

Check if a Buffer/Uint8Array is a JPEG XR image

Last commit Sep 18, 2021

 (9 stars) (3 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-low-power-modeJavaScript

Check if the system is in low power mode

Last commit Jul 25, 2024

 (69 stars) (3 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-mdJavaScript

Check if a filepath is a Markdown file

Last commit May 4, 2021

 (22 stars) (7 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-network-errorJavaScript

Check if a value is a Fetch network error

Last commit May 8, 2026

 (160 stars) (10 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-npmJavaScript

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

Last commit Sep 10, 2025

 (66 stars) (9 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-npm-cliJavaScript

Check if your code is running as an npm script

Last commit Sep 18, 2021

 (54 stars) (3 forks) (0 indexed issues) (0 open good first issues)
sindresorhus/is-objJavaScript

Check if a value is an object

Last commit Apr 16, 2021

 (42 stars) (9 forks) (0 indexed issues) (0 open good first issues)