According to a report at 9to5mac citing people familiar with Apple’s plans, several iOS features will come to the Mac in macOS 10.15.
First and foremost among these is Shortcuts, the automation application that Apple built out of its acquisition of Workflow. The app, support for which was introduced in iOS 12, allows iPhone and iPad users to define steps for their devices to perform when they deliver certain user-definable Siri voice commands, tap user-created home screen icons, and so on.
Shortcuts is tightly integrated with Siri, and it was positioned by Apple as a way to make Siri much more powerful than it has been previously. Third-party app developers could develop their own Shortcuts and accompanying Siri commands that could be accessed across the operating system.