message: use FlexProps type for Flex component
diff: @@ -13,7 +13,7 @@ import {
  } from './constants'
  import {ComponentProps} from './utils/types'
  import theme from './theme'
  -import Flex from './Flex'
  +import Flex, {FlexProps} from './Flex'
  import sx, {SxProp} from './sx'
  import * as History from 'history'
  @@ -63,7 +63,7 @@ function SubNav({actions, className, children, label, theme, ...rest}: StyledSub
  )
  }
  -const SubNavLinks = (props: SystemFlexProps & SystemCommonProps & SxProp) => <Flex {...props} />
  +const SubNavLinks = (props: FlexProps) => <Flex {...props} />
  type StyledSubNavLinkProps = {
  to?: History.LocationDescriptor
  