Xcode is Apple's integrated development environment (IDE) for macOS, used to develop software for macOS, iOS, iPadOS, watchOS, and tvOS. It was initially released in late 2003; the latest stable release is version 14.2, released on December 13, 2022, via the Mac App Store with macOS Monterey. The software suite is offered free of charge. Registered developers can download preview releases and prior versions of the suite through the Apple Developer website. Xcode includes command-line tools which enable UNIX-style development via the Terminal app in macOS. They can also be downloaded and installed without the GUI.
To do this downgrade you may need to have a recent backup of the system or an installer package of for example Safari 11.1.2 for Sierra (link might change quickly or disappear altogether. Also, try to use the latest applicable version) ready and an application like Pacifist. (High Sierra users might have to revert to download -http.cdn-apple.com/2018/macos/091-94327-20180709-5409BA12-7C10-11E8-84CF-4F47544C24EB/macOSUpdCombo10.13.6.dmg and extract the files from there. Still quicker than restoring from TimeMachine or a full downgrading re-sinstall.) 1e1e36bf2d