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