at-rule.js 1.8 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 _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _defaults(subClass, superClass); }
  4. var Prefixer = require('./prefixer');
  5. var AtRule =
  6. /*#__PURE__*/
  7. function (_Prefixer) {
  8. _inheritsLoose(AtRule, _Prefixer);
  9. function AtRule() {
  10. return _Prefixer.apply(this, arguments) || this;
  11. }
  12. var _proto = AtRule.prototype;
  13. /**
  14. * Clone and add prefixes for at-rule
  15. */
  16. _proto.add = function add(rule, prefix) {
  17. var prefixed = prefix + rule.name;
  18. var already = rule.parent.some(function (i) {
  19. return i.name === prefixed && i.params === rule.params;
  20. });
  21. if (already) {
  22. return undefined;
  23. }
  24. var cloned = this.clone(rule, {
  25. name: prefixed
  26. });
  27. return rule.parent.insertBefore(rule, cloned);
  28. }
  29. /**
  30. * Clone node with prefixes
  31. */
  32. ;
  33. _proto.process = function process(node) {
  34. var parent = this.parentPrefix(node);
  35. for (var _iterator = this.prefixes, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
  36. var _ref;
  37. if (_isArray) {
  38. if (_i >= _iterator.length) break;
  39. _ref = _iterator[_i++];
  40. } else {
  41. _i = _iterator.next();
  42. if (_i.done) break;
  43. _ref = _i.value;
  44. }
  45. var prefix = _ref;
  46. if (!parent || parent === prefix) {
  47. this.add(node, prefix);
  48. }
  49. }
  50. };
  51. return AtRule;
  52. }(Prefixer);
  53. module.exports = AtRule;