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{"version":3,"file":"index.cjs.js","sources":["src/lib/postcss-values-parser.js","src/lib/is-ignored.js","src/lib/get-custom-properties-from-root.js","src/lib/get-custom-properties-from-imports.js","src/lib/transform-value-ast.js","src/lib/transform-properties.js","src/lib/write-custom-properties-to-exports.js","src/index.js"],"sourcesContent":["import valueParser from 'postcss-values-parser';\n\nexport function parse (string) {\n\treturn valueParser(string).parse();\n}\n","function isBlockIgnored(ruleOrDeclaration) {\n\tvar rule = ruleOrDeclaration.selector ?\n\t\truleOrDeclaration : ruleOrDeclaration.parent;\n\n\treturn /(!\\s*)?postcss-custom-properties:\\s*off\\b/i.test(rule.toString())\n}\n\nfunction isRuleIgnored(rule) {\n\tvar previous = rule.prev();\n\n\treturn Boolean(isBlockIgnored(rule) ||\n\t\tprevious &&\n\t\tprevious.type === 'comment' &&\n\t\t/(!\\s*)?postcss-custom-properties:\\s*ignore\\s+next\\b/i.test(previous.text));\n}\n\nexport {\n\tisBlockIgnored,\n\tisRuleIgnored\n}\n","import { parse } from './postcss-values-parser';\nimport { isBlockIgnored } from './is-ignored';\n\n// return custom selectors from the css root, conditionally removing them\nexport default function getCustomPropertiesFromRoot(root, opts) {\n\t// initialize custom selectors\n\tconst customPropertiesFromHtmlElement = {};\n\tconst customPropertiesFromRootPseudo = {};\n\n\t// for each html or :root rule\n\troot.nodes.slice().forEach(rule => {\n\t\tconst customPropertiesObject = isHtmlRule(rule)\n\t\t\t? customPropertiesFromHtmlElement\n\t\t: isRootRule(rule)\n\t\t\t? customPropertiesFromRootPseudo\n\t\t: null;\n\n\t\t// for each custom property\n\t\tif (customPropertiesObject) {\n\t\t\trule.nodes.slice().forEach(decl => {\n\t\t\t\tif (isCustomDecl(decl) && !isBlockIgnored(decl)) {\n\t\t\t\t\tconst { prop } = decl;\n\n\t\t\t\t\t// write the parsed value to the custom property\n\t\t\t\t\tcustomPropertiesObject[prop] = parse(decl.value).nodes;\n\n\t\t\t\t\t// conditionally remove the custom property declaration\n\t\t\t\t\tif (!opts.preserve) {\n\t\t\t\t\t\tdecl.remove();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// conditionally remove the empty html or :root rule\n\t\t\tif (!opts.preserve && isEmptyParent(rule) && !isBlockIgnored(rule)) {\n\t\t\t\trule.remove();\n\t\t\t}\n\t\t}\n\t});\n\n\t// return all custom properties, preferring :root properties over html properties\n\treturn { ...customPropertiesFromHtmlElement, ...customPropertiesFromRootPseudo };\n}\n\n// match html and :root rules\nconst htmlSelectorRegExp = /^html$/i;\nconst rootSelectorRegExp = /^:root$/i;\nconst customPropertyRegExp = /^--[A-z][\\w-]*$/;\n\n// whether the node is an html or :root rule\nconst isHtmlRule = node => node.type === 'rule' && htmlSelectorRegExp.test(node.selector) && Object(node.nodes).length;\nconst isRootRule = node => node.type === 'rule' && rootSelectorRegExp.test(node.selector) && Object(node.nodes).length;\n\n// whether the node is an custom property\nconst isCustomDecl = node => node.type === 'decl' && customPropertyRegExp.test(node.prop);\n\n// whether the node is a parent without children\nconst isEmptyParent = node => Object(node.nodes).length === 0;\n","import fs from 'fs';\nimport path from 'path';\nimport postcss from 'postcss';\nimport { parse } from './postcss-values-parser';\nimport getCustomPropertiesFromRoot from './get-custom-properties-from-root';\n\n/* Get Custom Properties from CSS File\n/* ========================================================================== */\n\nasync function getCustomPropertiesFromCSSFile(from) {\n\tconst css = await readFile(from);\n\tconst root = postcss.parse(css, { from });\n\n\treturn getCustomPropertiesFromRoot(root, { preserve: true });\n}\n\n/* Get Custom Properties from Object\n/* ========================================================================== */\n\nfunction getCustomPropertiesFromObject(object) {\n\tconst customProperties = Object.assign(\n\t\t{},\n\t\tObject(object).customProperties,\n\t\tObject(object)['custom-properties']\n\t);\n\n\tfor (const key in customProperties) {\n\t\
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