This repository is mainly intended to try out some things with browser extensions in order to debug / test how some functionality works. Currently it contains the following:

• reading/writing from storage across multiple pages
• background worker event registration
• content script injection
• basic message passing from content script to background worker

• built on web technologies - Manifest v3 should be fairly cross browser
• run in a separate, sandboxed execution environment

• some code runs in your 'extension code' / some code (potentially) runs in a window/tab context
• seems like it's not that straightforward to 'import' code (to investigate further) => it is possible to import a background service worker as a module
• with a 'standard' integration your extension code will not be running anymore on page refresh / page navigations
• when working with storage there are several constraints/considerations. To provide a consistent experience some form of storage will be required however
  • ensure to use the same key value in 'get' as the item you actually need on the returned items object
  • access is possible across multiple pages if the page is run in the context of the extension (for example through chrome.runtime.getURL)
  • 'sync' storage has very strict quota

• console.log will be written out depending on the execution context. By default they will not be consolidated
  • from extension context: visible in chrome://extensions 'Errors' view
  • from window/tab context: visible in DevTools of the webpage itself

• Chrome Developer Docs: https://developer.chrome.com/docs/extensions/
• Chrome API Reference: https://developer.chrome.com/docs/extensions/reference/