How To Check If Your Extensions Will Stop Working With Firefox 57
With Firefox 57, scheduled for release in November 14, 2017, Mozilla will end support for legacy extensions, and only support newer WebExtensions. Here’s how to check if your extensions will stop working—and how to keep using them after November, if you need to. Why XUL Extensions Are Going Away All traditional extensions, including XUL extensions, are being discontinued. They were very powerful, but that was both a strength and a weakness....