message: fix typo; change propTypes spreading order
diff: @@ -31,7 +31,7 @@ export function getSystemProps(props) {
  } else if (typeof prop === 'function') {
  return prop
  } else {
  - throw new Error(`Unknown system prop: "%{prop}"`)
  + throw new Error(`Unknown system prop: "${prop}"`)
  }
  })
  }
  @@ -49,8 +49,8 @@ export function withSystemProps(Component, props) {
  const composed = composeSystemProps(props)
  const Wrapped = styled(Component)(composed)
  Wrapped.propTypes = {
  - ...Component.propTypes,
  - ...composed.propTypes
  + ...composed.propTypes,
  + ...Component.propTypes
  }
  return Wrapped
  }
  