Warning: Failed prop type: Invalid prop `textMessage` supplied to `SnackbarComponent`.

[balsick]

The declared type for prop textMessage is not correctly working with memoized components supplied as prop for textMessage.
The most proper type should be PropTypes.element instead of PropTypes.func.

Additionally, bottom could be set more specifically instead of just declaring them as object.

SnackbarComponent.propTypes = {
   left: PropTypes.number,
   right: PropTypes.number,
   top: PropTypes.number,
-  bottom: PropTypes.number,
+  bottom: PropTypes.oneOfType([PropTypes.number, PropTypes.instanceOf(Animated.Value)]),
   visible: PropTypes.bool,
   actionText: PropTypes.string,
-  textMessage: PropTypes.oneOfType([PropTypes.string, PropTypes.func]),
+  textMessage: PropTypes.oneOfType([PropTypes.string, PropTypes.element]),
   position: PropTypes.oneOf(['bottom', 'top']), // bottom (default), top
   // eslint-disable-next-line react/no-unused-prop-types
   autoHidingTime: PropTypes.number, // How long (in milliseconds) the snack bar will be hidden.
   containerStyle: ViewPropTypes.style,
   messageStyle: Text.propTypes.style,
   actionStyle: Text.propTypes.style,
 };