const { url } = useRouteMatch() doesn't have good equivalent in V6

[yhafez]

I'm working on migrating to v6 from v5 on a project I'm working on. Currently, we're using the base url destructured from useRouteMatch() to set state regarding the currently selected object and to navigate to the next page. The restructured url property returns the url without the parameters that can then be used with routeMatch to obtain the parameters using a pattern, but since v6 requires an argument to be passed to useMatch(), there's no way to get the url without the parameters. In this case, the parameters are not named because they're being set by another route in the component, so useParameters returns the parameters with a key of * that I can't access. The code looks something like this:

const ExampleComponent = () => {
  const history = useHistory()
  const { url } = useRouteMatch()
  const match = matchPath(
    {
      path: `${url}/:id`
    },
    history.location.pathname
  )

const selectedObjId = match
    ? (match.params as { id?: string }).id
    : undefined

const setSelectedObjId = (ObjId?: string) => {
    history.push(getObjDetailsUrl(url, objId))
  }
...
return(
  <>
    <SomeComponents>
    <Switch>
            <Route path={`${url}/:id`}>
              <ObjDetails />
            </Route>
      </Switch>
  </>
)

The url is required in several portions of the code, but I can't access it in v6. location.pathname for example doesn't give the baseUrl, it includes the parameters, so I can't use it as the path key passed to matchPath to determine the id in the params.