import { createRequire } from 'module'; import patch from './data-patch.js'; const require = createRequire(import.meta.url); const mdnAtrules = require('mdn-data/css/at-rules.json'); const mdnProperties = require('mdn-data/css/properties.json'); const mdnSyntaxes = require('mdn-data/css/syntaxes.json'); const extendSyntax = /^\s*\|\s*/; function preprocessAtrules(dict) { const result = Object.create(null); for (const atruleName in dict) { const atrule = dict[atruleName]; let descriptors = null; if (atrule.descriptors) { descriptors = Object.create(null); for (const descriptor in atrule.descriptors) { descriptors[descriptor] = atrule.descriptors[descriptor].syntax; } } result[atruleName.substr(1)] = { prelude: atrule.syntax.trim().replace(/\{(.|\s)+\}/, '').match(/^@\S+\s+([^;\{]*)/)[1].trim() || null, descriptors }; } return result; } function patchDictionary(dict, patchDict) { const result = {}; // copy all syntaxes for an original dict for (const key in dict) { result[key] = dict[key].syntax || dict[key]; } // apply a patch for (const key in patchDict) { if (key in dict) { if (patchDict[key].syntax) { result[key] = extendSyntax.test(patchDict[key].syntax) ? result[key] + ' ' + patchDict[key].syntax.trim() : patchDict[key].syntax; } else { delete result[key]; } } else { if (patchDict[key].syntax) { result[key] = patchDict[key].syntax.replace(extendSyntax, ''); } } } return result; } function patchAtrules(dict, patchDict) { const result = {}; // copy all syntaxes for an original dict for (const key in dict) { const atrulePatch = patchDict[key] || {}; result[key] = { prelude: key in patchDict && 'prelude' in atrulePatch ? atrulePatch.prelude : dict[key].prelude || null, descriptors: patchDictionary(dict[key].descriptors || {}, atrulePatch.descriptors || {}) }; } // apply a patch for (const key in patchDict) { if (!hasOwnProperty.call(dict, key)) { const atrulePatch = patchDict[key] || {}; result[key] = { prelude: atrulePatch.prelude || null, descriptors: atrulePatch.descriptors && patchDictionary({}, atrulePatch.descriptors) }; } } return result; } export default { types: patchDictionary(mdnSyntaxes, patch.types), atrules: patchAtrules(preprocessAtrules(mdnAtrules), patch.atrules), properties: patchDictionary(mdnProperties, patch.properties) };