40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
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var hasOwnProperty = Object.prototype.hasOwnProperty;
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function cleanUnused(node, usageData) {
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return node.selector.selectors.each(function(selector, item, list) {
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var hasUnused = selector.sequence.some(function(node) {
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switch (node.type) {
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case 'Class':
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return usageData.classes && !hasOwnProperty.call(usageData.classes, node.name);
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case 'Id':
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return usageData.ids && !hasOwnProperty.call(usageData.ids, node.name);
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case 'Identifier':
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// ignore universal selector
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if (node.name !== '*') {
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// TODO: remove toLowerCase when type selectors will be normalized
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return usageData.tags && !hasOwnProperty.call(usageData.tags, node.name.toLowerCase());
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}
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break;
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}
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});
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if (hasUnused) {
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list.remove(item);
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}
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});
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}
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module.exports = function cleanRuleset(node, item, list, usageData) {
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if (usageData) {
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cleanUnused(node, usageData);
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}
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if (node.selector.selectors.isEmpty() ||
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node.block.declarations.isEmpty()) {
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list.remove(item);
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}
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};
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