Optional history?: boolean | unknownA custom browser history object and control which Router to use.
true, or not specified, then Router is used with history from createBrowserHistory
from https://www.npmjs.com/package/history and the same history object will be shared
among all subappsRouterBrowserRouter, which internally uses its own history object that's not
shared with other subapps.
The React module.
This is needed for the react router feature to wrap subapp's component inside the Router component.