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56 lines
1.3 KiB
56 lines
1.3 KiB
'use strict'; |
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const charset = 'charset'; |
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// eslint-disable-next-line no-control-regex |
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const nonAscii = /[^\x00-\x7F]/; |
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|
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/** |
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* @typedef {{add?: boolean}} Options |
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*/ |
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/** |
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* @type {import('postcss').PluginCreator<Options>} |
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* @param {Options} opts |
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* @return {import('postcss').Plugin} |
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*/ |
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function pluginCreator(opts = {}) { |
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return { |
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postcssPlugin: 'postcss-normalize-' + charset, |
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OnceExit(css, { AtRule }) { |
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/** @type {import('postcss').AtRule | undefined} */ |
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let charsetRule; |
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/** @type {import('postcss').Node | undefined} */ |
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let nonAsciiNode; |
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|
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css.walk((node) => { |
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if (node.type === 'atrule' && node.name === charset) { |
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if (!charsetRule) { |
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charsetRule = node; |
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} |
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node.remove(); |
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} else if ( |
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!nonAsciiNode && |
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node.parent === css && |
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nonAscii.test(node.toString()) |
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) { |
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nonAsciiNode = node; |
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} |
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}); |
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if (nonAsciiNode) { |
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if (!charsetRule && opts.add !== false) { |
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charsetRule = new AtRule({ |
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name: charset, |
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params: '"utf-8"', |
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}); |
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} |
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if (charsetRule) { |
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charsetRule.source = nonAsciiNode.source; |
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css.prepend(charsetRule); |
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} |
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} |
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}, |
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}; |
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} |
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pluginCreator.postcss = true; |
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module.exports = pluginCreator;
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