@mui/stylis-plugin-rtl/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.
 */
"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _cssjanus = _interopRequireDefault(require("cssjanus"));
var _stylis = require("stylis");
/* 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

function stringifyPreserveComments(element, index, children) {
  switch (element.type) {
    case _stylis.IMPORT:
    case _stylis.DECLARATION:
    case _stylis.COMMENT:
      return element.return = element.return || element.value;
    case _stylis.RULESET:
      {
        element.value = Array.isArray(element.props) ? element.props.join(',') : element.props;
        if (Array.isArray(element.children)) {
          element.children.forEach(x => {
            if (x.type === _stylis.COMMENT) x.children = x.value;
          });
        }
      }
  }
  const serializedChildren = (0, _stylis.serialize)(Array.prototype.concat(element.children), stringifyPreserveComments);
  return (0, _stylis.strlen)(serializedChildren) ? element.return = element.value + '{' + serializedChildren + '}' : '';
}
function stylisRTLPlugin(element, index, children, callback) {
  if (element.type === _stylis.KEYFRAMES || element.type === _stylis.SUPPORTS || element.type === _stylis.RULESET && (!element.parent || element.parent.type === _stylis.MEDIA || element.parent.type === _stylis.RULESET || element.parent.type === _stylis.LAYER)) {
    const stringified = _cssjanus.default.transform(stringifyPreserveComments(element, index, children));
    element.children = stringified ? (0, _stylis.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'
});
var _default = exports.default = stylisRTLPlugin;