--- /dev/null
+"use strict";
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var OldSelector = function () {
+ function OldSelector(selector, prefix) {
+ _classCallCheck(this, OldSelector);
+
+ this.prefix = prefix;
+ this.prefixed = selector.prefixed(this.prefix);
+ this.regexp = selector.regexp(this.prefix);
+
+ this.prefixeds = selector.possible().map(function (x) {
+ return [selector.prefixed(x), selector.regexp(x)];
+ });
+
+ this.unprefixed = selector.name;
+ this.nameRegexp = selector.regexp();
+ }
+
+ /**
+ * Is rule a hack without unprefixed version bottom
+ */
+
+
+ OldSelector.prototype.isHack = function isHack(rule) {
+ var index = rule.parent.index(rule) + 1;
+ var rules = rule.parent.nodes;
+
+ while (index < rules.length) {
+ var before = rules[index].selector;
+ if (!before) {
+ return true;
+ }
+
+ if (before.indexOf(this.unprefixed) !== -1 && before.match(this.nameRegexp)) {
+ return false;
+ }
+
+ var some = false;
+ for (var _iterator = this.prefixeds, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
+ var _ref2;
+
+ if (_isArray) {
+ if (_i >= _iterator.length) break;
+ _ref2 = _iterator[_i++];
+ } else {
+ _i = _iterator.next();
+ if (_i.done) break;
+ _ref2 = _i.value;
+ }
+
+ var _ref = _ref2;
+ var string = _ref[0];
+ var regexp = _ref[1];
+
+ if (before.indexOf(string) !== -1 && before.match(regexp)) {
+ some = true;
+ break;
+ }
+ }
+
+ if (!some) {
+ return true;
+ }
+
+ index += 1;
+ }
+
+ return true;
+ };
+
+ /**
+ * Does rule contain an unnecessary prefixed selector
+ */
+
+
+ OldSelector.prototype.check = function check(rule) {
+ if (rule.selector.indexOf(this.prefixed) === -1) {
+ return false;
+ }
+ if (!rule.selector.match(this.regexp)) {
+ return false;
+ }
+ if (this.isHack(rule)) {
+ return false;
+ }
+ return true;
+ };
+
+ return OldSelector;
+}();
+
+module.exports = OldSelector;
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