One simply can not just attach debugger to Firefox on macOS, > At this time, official builds of Firefox 69 and later are Notarized. As a result, it is not poss

One simply can not just attach debugger to Firefox on macOS, > At this time, official builds of Firefox 69 and later are Notarized. As a result, it is not possible to attach a debugger to these official Firefox releases on macOS 10.14+ without disabling System Integrity Protection (SIP). This is due to Notarization requiring Hardened Runtime to be enabled with the com.apple.security.get-task-allow entitlement disallowed. Rather than disabling SIP (which has security implications), it is recommended to debug with try builds or local builds. The differences are explained below. https://firefox-source-docs.mozilla.org/contributing/debugging/debugging_on_macos.html https://firefox-source-docs.mozilla.org/contributing/debuggi...