55 lines
1.5 KiB
JavaScript
55 lines
1.5 KiB
JavaScript
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module.exports = function cleanAtrule(node, item, list) {
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if (node.block) {
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// otherwise removed at-rule don't prevent @import for removal
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this.root.firstAtrulesAllowed = false;
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if (node.block.type === 'Block' && node.block.declarations.isEmpty()) {
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list.remove(item);
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return;
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}
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if (node.block.type === 'StyleSheet' && node.block.rules.isEmpty()) {
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list.remove(item);
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return;
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}
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}
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switch (node.name) {
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case 'charset':
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if (node.expression.sequence.isEmpty()) {
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list.remove(item);
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return;
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}
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// if there is any rule before @charset -> remove it
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if (item.prev) {
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list.remove(item);
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return;
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}
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break;
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case 'import':
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if (!this.root.firstAtrulesAllowed) {
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list.remove(item);
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return;
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}
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// if there are some rules that not an @import or @charset before @import
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// remove it
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list.prevUntil(item.prev, function(rule) {
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if (rule.type === 'Atrule') {
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if (rule.name === 'import' || rule.name === 'charset') {
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return;
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}
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}
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this.root.firstAtrulesAllowed = false;
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list.remove(item);
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return true;
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}, this);
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break;
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}
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};
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