react-dates/src/utils/getPhrasePropTypes.js

A responsive and accessible date range picker component built with React

import PropTypes from 'prop-types';

export default function getPhrasePropTypes(defaultPhrases) {
  return Object.keys(defaultPhrases)
    .reduce((phrases, key) => ({
      ...phrases,
      [key]: PropTypes.oneOfType([PropTypes.string, PropTypes.func, PropTypes.node]),
    }), {});
}