at-rule.js 3.9 KB

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  1. "use strict";
  2. function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }
  3. function _createForOfIteratorHelperLoose(o) { var i = 0; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (o = _unsupportedIterableToArray(o))) return function () { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }; throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } i = o[Symbol.iterator](); return i.next.bind(i); }
  4. 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(n); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
  5. 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; }
  6. function _createSuper(Derived) { return function () { var Super = _getPrototypeOf(Derived), result; if (_isNativeReflectConstruct()) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
  7. function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
  8. function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
  9. function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
  10. function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
  11. function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _defaults(subClass, superClass); }
  12. var Prefixer = require('./prefixer');
  13. var AtRule = /*#__PURE__*/function (_Prefixer) {
  14. _inheritsLoose(AtRule, _Prefixer);
  15. var _super = _createSuper(AtRule);
  16. function AtRule() {
  17. return _Prefixer.apply(this, arguments) || this;
  18. }
  19. var _proto = AtRule.prototype;
  20. /**
  21. * Clone and add prefixes for at-rule
  22. */
  23. _proto.add = function add(rule, prefix) {
  24. var prefixed = prefix + rule.name;
  25. var already = rule.parent.some(function (i) {
  26. return i.name === prefixed && i.params === rule.params;
  27. });
  28. if (already) {
  29. return undefined;
  30. }
  31. var cloned = this.clone(rule, {
  32. name: prefixed
  33. });
  34. return rule.parent.insertBefore(rule, cloned);
  35. }
  36. /**
  37. * Clone node with prefixes
  38. */
  39. ;
  40. _proto.process = function process(node) {
  41. var parent = this.parentPrefix(node);
  42. for (var _iterator = _createForOfIteratorHelperLoose(this.prefixes), _step; !(_step = _iterator()).done;) {
  43. var prefix = _step.value;
  44. if (!parent || parent === prefix) {
  45. this.add(node, prefix);
  46. }
  47. }
  48. };
  49. return AtRule;
  50. }(Prefixer);
  51. module.exports = AtRule;