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activities
Handoff on iOS and macOS, for the user activities the page sets and continues.
An app has it by having @crossbind/core-app-host, which lists it as a dependency: there is nothing to install or list.
Use
Options
app.activityTypes lists the types of user activities the app sets and continues, as ['com.example.notes.edit']. The app has this extension only where a type is listed.
Platforms
iOS and macOS. Elsewhere app.setUserActivity rejects.
Replace or leave out
It holds the role activities. An extension that gives replaces: 'activities' takes it; app: { without: ['activities'] } in crossbind.config.js leaves it out. Leaving it out while app.activityTypes is set stops the build. The guide shows how, and extensions.md what a replacement answers.
app.md has the rules of a type.