proptypes

React's PropTypes, packaged up as a standalone module.

DISCLAIMER: This is literally copied from the React 0.14 codebase. If you're using PropTypes with React, it would be silly to reference this standalone version.

Usage

function check(props, propTypes) {
	for (let prop in propTypes) {
		if (propTypes.hasOwnProperty(prop)) {
			let err = propTypes[prop](props, prop, 'name', 'prop');
			if (err) {
				console.warn(err);
				return false;
			}
		}
	}
	return true;
}

let valid = check({
  a: 42,
  b: 'News'
}, {
  a: PropTypes.number,
  b: PropTypes.oneOf(['News', 'Photos'])
});

valid;  // true

Disabling in production build

With webpack:

module.exports = {
	resolve: {
		alias: {
			proptypes: 'proptypes/disabled',
		}
	}
};

License

BSD