I commented this lines to works for me
line 21
// const ViewPropTypes = RNViewPropTypes || View.propTypes;

line 150 & 156
Toast.propTypes = {
//style: ViewPropTypes.style,
position: PropTypes.oneOf([
'top',
'center',
'bottom',
]),
// textStyle: Text.propTypes.style,
positionValue:PropTypes.number,
fadeInDuration:PropTypes.number,
fadeOutDuration:PropTypes.number,
opacity:PropTypes.number,
useNativeAnimation:PropTypes.bool
}