PropTypes and DefaultProps - Good Example

GoodPropTypes.jsx

import propTypes from ‘prop-types’;
const propTypes = {
    findDelay: PropTypes.number,    
    columns: PropTypes.array,
    loadCollapsed: PropTypes.bool,
    tableHeight: PropTypes.number,
    rowHeight: PropTypes.number,
    defaultColWidth: PropTypes.number,
};

const defaultProps = {
    findDelay: 500,
    columns: [],
    loadCollapsed: false,
    tableHeight: 500,
    rowHeight: 96,
    defaultColWidth: 0
};

export default class YourComponent extends React.Component {
    // Your code
}

YourComponent.propTypes = propTypes;
YourComponent.defaultProps = defaultProps;