@zohodesk/postcss-rtl/lib/decls.js

PostCSS plugin for RTL-optimizations

"use strict";

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
const rtlcss = require('rtlcss');
const getProcessedKeyframeValue = (decl, keyframes = [], dir) => {
  let value = decl.value;
  keyframes.forEach(keyframe => {
    const nameRegex = new RegExp(`(^|\\s)${keyframe}($|\\s)`);
    if (!value.match(nameRegex)) return;
    value = value.replace(nameRegex, ` ${keyframe}-${dir} `);
  });
  return value;
};
const rtlifyDecl = (decl, keyframes) => {
  let prop = decl.prop,
    value = decl.value;
  if (decl.prop.match(/animation/)) {
    value = getProcessedKeyframeValue(decl, keyframes, 'rtl');
  } else {
    const rtlResult = rtlcss.process(decl, null, null);
    if (rtlResult === decl.toString()) {
      return null;
    }
    var _ref = rtlResult.match(/([^:]*):\s*(.*)/) || [];
    var _ref2 = _slicedToArray(_ref, 3);
    prop = _ref2[1];
    value = _ref2[2];
    value = value.replace(/\s*!important/, '');
  }
  return {
    prop,
    value
  };
};
const ltrifyDecl = (decl, keyframes) => {
  if (decl.prop.match(/animation/)) {
    decl.value = getProcessedKeyframeValue(decl, keyframes, 'ltr');
  }
  return decl;
};
module.exports = {
  ltrifyDecl,
  rtlifyDecl
};