react-howl/src/styles/extendTheme.js

A unified design system.

import deepmerge from 'deepmerge';

/**
 * Extends and/or overrides the theme.
 *
 * @param {object} base - The theme that will be extended/overridden.
 * @param {object} extending - The extending theme that will extend/override the theme.
 *
 * @return {object} The extended/overridden theme.
 *
 * @example
 *    const newTheme = extendTheme(
 *      { primaryColor: 'red' },
 *      { primaryColor: 'blue', secondaryColor: 'green' },
 *    );
 */
const extendTheme = (base, extending) => deepmerge(base, extending);

export default extendTheme;