Best practices for writing PropTypes for React Components (Work in Progress)

PropTypes best practices.md

Best Practices for React PropTypes

• Avoid using PropTypes.string for a prop that sets a type/variation, use PropTypes.oneOf(CONSTANT) instead:

// BAD:
Button.propTypes = {
    size: React.PropTypes.string
};

// Good:
const SIZES = {
    small: '25px',
    standard: '32px',
    big: '50px'
};

Button.propTypes = {
    size: React.PropTypes.oneOf(Object.keys(SIZES))
};