JS Restrictions door Indigotime

This addon allows you to control JavaScript API permissions at per-script basis.
You may use it to protect your privacy against fingerprinting.
Use options page to specify JavaScript API restrictions. Choose feature name, context (first-party or third-party) and permission level.

TL:DR; this addon may do the same things as WebAPI Manager, but at per-script basis.

PLEASE NOTE: I cannot guarantee that extension script will be executed before page scripts. If you want this to be fixed ASAP, please vote for https://bugzilla.mozilla.org/show_bug.cgi?id=1739587 and https://bugzilla.mozilla.org/show_bug.cgi?id=1446231