ServiceWorker

By default, JupyterLite tries to launch a ServiceWorker.

If available, this enables a number of useful features:

• synced content between browser storage and kernels

• a robust, offline-capable caching proxy for all fetched content, including:

  • the JupyterLite application itself

  • content files from the server

  • any requests made by kernel, such as installed packages

Limitations

A ServiceWorker will only be created and used if all of the following are true:

• the extension has not been disabled

• the user’s current browser session supports the ServiceWorker API

  • see supported browsers

  • Private Browsing in Firefox is known to not work

• the HTTP server’s URL starts with one of:

  • https://

  • http://127.0.0.1:{*}/ (any port)

  • http://localhost:{*}/ (any port)