25 lines
905 B
JavaScript
25 lines
905 B
JavaScript
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'use strict';
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const RX_NAMESPACE = /\s*(@namespace\s+(?:\S+\s+)?url\(http:\/\/.*?\);)\s*/g;
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const RX_CHARSET = /\s*@charset\s+(['"]).*?\1\s*;\s*/g;
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const RX_CSS_COMMENTS = /\/\*[\s\S]*?(?:\*\/|$)/g;
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function styleCodeEmpty(code) {
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// Collect the global section if it's not empty, not comment-only, not namespace-only.
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const cmtOpen = code && code.indexOf('/*');
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if (cmtOpen >= 0) {
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const cmtCloseLast = code.lastIndexOf('*/');
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if (cmtCloseLast < 0) {
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code = code.substr(0, cmtOpen);
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} else {
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code = code.substr(0, cmtOpen) +
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code.substring(cmtOpen, cmtCloseLast + 2).replace(RX_CSS_COMMENTS, '') +
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code.substr(cmtCloseLast + 2);
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}
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}
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if (!code || !code.trim()) return true;
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if (code.includes('@namespace')) code = code.replace(RX_NAMESPACE, '').trim();
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if (code.includes('@charset')) code = code.replace(RX_CHARSET, '').trim();
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return !code;
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}
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