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by ChrisSD 2898 days ago
Could you not use webNavigation[0] to check the url and permissions API to ask for permission[1] if necessary?

EDIT: Or tabs.onUpdated if webNavigation doesn't fire for hash changes[2]

[0] https://developer.mozilla.org/en-US/Add-ons/WebExtensions/AP...

[1] https://developer.mozilla.org/en-US/Add-ons/WebExtensions/AP...

[2] https://developer.mozilla.org/en-US/Add-ons/WebExtensions/AP...