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76 lines
1.7 KiB
76 lines
1.7 KiB
const importPattern = /^:import\(("[^"]*"|'[^']*'|[^"']+)\)$/; |
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const balancedQuotes = /^("[^"]*"|'[^']*'|[^"']+)$/; |
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const getDeclsObject = (rule) => { |
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const object = {}; |
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rule.walkDecls((decl) => { |
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const before = decl.raws.before ? decl.raws.before.trim() : ""; |
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object[before + decl.prop] = decl.value; |
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}); |
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return object; |
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}; |
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/** |
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* |
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* @param {string} css |
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* @param {boolean} removeRules |
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* @param {'auto' | 'rule' | 'at-rule'} mode |
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*/ |
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const extractICSS = (css, removeRules = true, mode = "auto") => { |
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const icssImports = {}; |
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const icssExports = {}; |
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function addImports(node, path) { |
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const unquoted = path.replace(/'|"/g, ""); |
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icssImports[unquoted] = Object.assign( |
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icssImports[unquoted] || {}, |
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getDeclsObject(node) |
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); |
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if (removeRules) { |
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node.remove(); |
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} |
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} |
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function addExports(node) { |
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Object.assign(icssExports, getDeclsObject(node)); |
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if (removeRules) { |
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node.remove(); |
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} |
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} |
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css.each((node) => { |
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if (node.type === "rule" && mode !== "at-rule") { |
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if (node.selector.slice(0, 7) === ":import") { |
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const matches = importPattern.exec(node.selector); |
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if (matches) { |
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addImports(node, matches[1]); |
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} |
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} |
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if (node.selector === ":export") { |
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addExports(node); |
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} |
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} |
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if (node.type === "atrule" && mode !== "rule") { |
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if (node.name === "icss-import") { |
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const matches = balancedQuotes.exec(node.params); |
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if (matches) { |
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addImports(node, matches[1]); |
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} |
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} |
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if (node.name === "icss-export") { |
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addExports(node); |
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} |
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} |
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}); |
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return { icssImports, icssExports }; |
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}; |
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module.exports = extractICSS;
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