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An anonymous reader writes:
Mozilla today launched Firefox 77 for Windows, Mac, and Linux. Firefox 77 includes faster JavaScript debugging, optional permissions for extensions, and Pocket recommendations in the U.K. You can download Firefox 77 for desktop now from Firefox.com, and all existing users should be able to upgrade to it automatically. According to Mozilla, Firefox has about 250 million active users, making it a major platform for web developers to consider. […] Other than Pocket recommendations arriving in the U.K. (they’ve been in Canada, Germany, and the U.S. since April 2018), this is primarily a developer release. Firefox’s Debugger is now better at handling large web apps with all their bundling, live reloading, and dependencies. Mozilla is promising performance improvements that speed up pausing and stepping, as well as cutting down on memory usage over time. Source maps should also see performance boosts – some inline source maps load 10 times faster – and improved reliability for many configurations. The debugger will now also respect the currently selected stack when stepping, which is useful when you’ve stepped into a function call or paused in a library method further down in the stack.