@mui/stylis-plugin-rtl/esm/index.js

A plugin for Material UI that provides RTL (right-to-left) support.

/**
 * @mui/stylis-plugin-rtl v7.2.0
 *
 * @license MIT
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
/* eslint-disable default-case, no-return-assign, curly, prefer-template, @typescript-eslint/no-unused-vars */

/**
 * Copied from https://github.com/styled-components/stylis-plugin-rtl/blob/main/src/stylis-rtl.ts
 * with a modification at line 67 to handle layer rules.
 */

// @ts-nocheck
import cssjanus from 'cssjanus';
import { COMMENT, compile, DECLARATION, IMPORT, RULESET, serialize, strlen, KEYFRAMES, MEDIA, SUPPORTS, LAYER } from 'stylis';
function stringifyPreserveComments(element, index, children) {
  switch (element.type) {
    case IMPORT:
    case DECLARATION:
    case COMMENT:
      return element.return = element.return || element.value;
    case RULESET:
      {
        element.value = Array.isArray(element.props) ? element.props.join(',') : element.props;
        if (Array.isArray(element.children)) {
          element.children.forEach(x => {
            if (x.type === COMMENT) x.children = x.value;
          });
        }
      }
  }
  const serializedChildren = serialize(Array.prototype.concat(element.children), stringifyPreserveComments);
  return strlen(serializedChildren) ? element.return = element.value + '{' + serializedChildren + '}' : '';
}
function stylisRTLPlugin(element, index, children, callback) {
  if (element.type === KEYFRAMES || element.type === SUPPORTS || element.type === RULESET && (!element.parent || element.parent.type === MEDIA || element.parent.type === RULESET || element.parent.type === LAYER)) {
    const stringified = cssjanus.transform(stringifyPreserveComments(element, index, children));
    element.children = stringified ? compile(stringified)[0].children : [];
    element.return = '';
  }
}

// stable identifier that will not be dropped by minification unless the whole module
// is unused
Object.defineProperty(stylisRTLPlugin, 'name', {
  value: 'stylisRTLPlugin'
});
export default stylisRTLPlugin;