node-serviceworker

Environment for running serviceworkers in node.js, as 'isomorphic' request handlers for clients without SW support.

Features and status

Based on this task.

• Registration to a scope. This introduces a very basic routing scope, but finer-grained routing is normally happening inside the service worker.
• fetch, via https://github.com/gwicke/node-fetch
  • Added ReadableStream support.
  • This also provides a basic Response implementation, wrapping the node HTTP response object.
• Request wrapper for Node's IncomingMessage.
• Cache. On the server, this is useful for in-process caching of frequently-used fragments.
• Accept ReadableStream body responses in FetchEvent.respondWith
• IndexedDB, via https://github.com/dumbmatter/fakeIndexedDB
• Runs basic sw-toolbox based ServiceWorkers.
• Periodic ServiceWorker code refreshs.
• Per-domain configuration support.

Demo

A demo service based on node-serviceworker-proxy is running at https://swproxy.wmflabs.org/wiki/Foobar. This is serving a demo streaming serviceworker, which composes templates and streamed HTML content using web-stream-util and web-html-stream.

TODO

• More closely implement WorkerGlobalScope. Roughly in order of importance:
  • console has a lot more methods in browsers than in node
  • location: done
  • performance object: Lots missing.
  • navigator object: Partly done, but more to do.