@wordpress/block-editor/build-module/utils/transform-styles/index.js

Generic block editor.

/**
 * WordPress dependencies
 */
import { compose } from '@wordpress/compose';
/**
 * Internal dependencies
 */

import traverse from './traverse';
import urlRewrite from './transforms/url-rewrite';
import wrap from './transforms/wrap';
/**
 * Applies a series of CSS rule transforms to wrap selectors inside a given class and/or rewrite URLs depending on the parameters passed.
 *
 * @param {Object|Array} styles           CSS rules.
 * @param {string}       wrapperClassName Wrapper Class Name.
 * @return {Array} converted rules.
 */

const transformStyles = (styles, wrapperClassName = '') => {
  return Object.values(styles !== null && styles !== void 0 ? styles : []).map(({
    css,
    baseURL
  }) => {
    const transforms = [];

    if (wrapperClassName) {
      transforms.push(wrap(wrapperClassName));
    }

    if (baseURL) {
      transforms.push(urlRewrite(baseURL));
    }

    if (transforms.length) {
      return traverse(css, compose(transforms));
    }

    return css;
  });
};

export default transformStyles;
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