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

Production build

Disabling

With webpack:

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

Removing the definitions with React

When you are using this package with React like API, you might want to save bandwidth by removing the definitions. You can use babel-plugin-transform-react-remove-prop-types for that use case, for instance:

// In
const Baz = (props) => (
  <div {...props} />
);

Baz.propTypes = {
  className: PropTypes.string
};

// Out
const Baz = (props) => (
  <div {...props} />
);

License