--- /dev/null
+'use strict';
+
+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; }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }
+
+var Value = require('../value');
+
+var ImageSet = function (_Value) {
+ _inherits(ImageSet, _Value);
+
+ function ImageSet() {
+ _classCallCheck(this, ImageSet);
+
+ return _possibleConstructorReturn(this, _Value.apply(this, arguments));
+ }
+
+ /**
+ * Use non-standard name for WebKit and Firefox
+ */
+ ImageSet.prototype.replace = function replace(string, prefix) {
+ var fixed = _Value.prototype.replace.call(this, string, prefix);
+ if (prefix === '-webkit-') {
+ fixed = fixed.replace(/("[^"]+"|'[^']+')(\s+\d+\w)/gi, 'url($1)$2');
+ }
+ return fixed;
+ };
+
+ return ImageSet;
+}(Value);
+
+Object.defineProperty(ImageSet, 'names', {
+ enumerable: true,
+ writable: true,
+ value: ['image-set']
+});
+
+
+module.exports = ImageSet;
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