Deno Third Party Modules
deno.land/x is a hosting service for Deno scripts. It caches releases of open-source modules stored on GitHub and serves them at an easy-to-remember domain.
Deno can import modules from any location on the web, like GitHub, a personal webserver, or a CDN like esm.sh, Skypack, jspm.io or jsDelivr.
To make it easier to consume third party modules Deno provides some built in tooling like deno info and deno doc.
- is_valid_package_nameValidation for package name
- is_upCheck whether a website is up or down in Deno.
- is_unicode_supported🖥️ Detect whether the terminal supports Unicode
- is_unc_pathWhether the filepath is a windows UNC file path.
- is_sshWhether the process is running inside SSH.
- is_runningReturn true if the given PID is running.
- is_relativeWhether the filepath is a relative file path.
- is_regexRegExp patterns validator 🦕
- is_onlineCheck if the internet connection is up in Deno.
- is_oddis-odd for deno
- is_objectChecks whether given value is an object
- is_mobileCheck if the request is from mobile browser or no, based on user agent
- is_likeFunctions to check if a value is something alike.
- is_khmerKhmer utility functions
- is_jsonJSON validator for deno 🦕
- is_installedNo description
- is_imageChecks if the string is a picture by extension
- is_gitWhether the filepath is a git repository.
- is_free_portReturn true if a port is free.
- is_exetest if a file is executable
Q&A
Can I still publish to deno.land/x?
No. deno.land/x is now read-only. Existing modules and versions remain available and immutable, but no new modules or versions can be published here. New packages should be published to JSR, the modern registry for Deno and the broader JavaScript ecosystem.
How do I use modules on deno.land/x?
The basic format of code URLs is https://deno.land/x/IDENTIFIER@VERSION/FILE_PATH. If you leave out the version it will be defaulted to the most recent version released for the module.
Can I find functionality built-in to Deno here?
No, the built-in runtime is documented in the manual. See /std for the standard modules.
I am getting a warning when importing from deno.land/x!
deno.land/x warns you when you are implicitly importing the latest version of a module (when you do not explicitly specify a version). This is because it can be unsafe to not tag dependencies. To get rid of the warning, explicitly specify a version.
Can I edit or remove a module on deno.land/x?
Module versions are persistent and immutable. It is thus not possible to edit or delete a module (or version), to prevent breaking programs that rely on this module. Modules may be removed if there is a legal reason to do (for example copyright infringement).
A module is name-squatting or its just made as a joke, can I have it?
deno.land/x is now read-only, so module names can no longer be claimed or reassigned. To publish a new, well-maintained module, use JSR instead.