React PropTypes : Allow different types of PropTypes for one prop

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

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

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

Learn more: Typechecking With PropTypes

This might work for you:

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

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