React PropTypes: Allow different types of PropTypes for one prop

Question

I have a component that receives a prop for its size. The prop can be either a string or a number ex: "LARGE" or 17.

Can I let React.PropTypes know that this can be either one or the other in the propTypes validation?

If I don't specify the type I get a warning:

prop type size is invalid; it must be a function, usually from React.PropTypes.

MyComponent.propTypes = {     size: React.PropTypes } 

Answer 1

size: PropTypes.oneOfType([   PropTypes.string,   PropTypes.number ]), 

Learn more: Typechecking With PropTypes

Answer 2

For documentation purpose, it's better to list the string values that are legal:

size: PropTypes.oneOfType([     PropTypes.number,     PropTypes.oneOf([ 'SMALL', 'LARGE' ]), ]),