import postcss from 'postcss'; import postcssBrowserComments from 'postcss-browser-comments'; import Module from 'module'; import path from 'path'; import { URL } from 'url'; import fs from 'fs'; const assign = (...objects) => Object.assign(...objects); const create = (...objects) => assign(Object.create(null), ...objects); const currentURL = import.meta.url; const currentFilename = new URL(currentURL).pathname; const currentDirname = path.dirname(currentFilename); // get resolved filenames for css libraries const normalizeCSS = resolve('@csstools/normalize.css'); const normalizeOpinionatedCSS = resolve('@csstools/normalize.css/opinionated.css'); const sanitizeCSS = resolve('sanitize.css'); const sanitizeFormsCSS = resolve('sanitize.css/forms.css'); const sanitizePageCSS = resolve('sanitize.css/page.css'); const sanitizeTypographyCSS = resolve('sanitize.css/typography.css'); // export a hashmap of css library filenames const parsableFilenames = create({ [normalizeCSS]: true, [normalizeOpinionatedCSS]: true, [sanitizeCSS]: true, [sanitizeFormsCSS]: true, [sanitizePageCSS]: true, [sanitizeTypographyCSS]: true }); // export a hashmap of css library filenames by id const resolvedFilenamesById = create({ 'normalize': [normalizeCSS], 'normalize/opinionated': [normalizeOpinionatedCSS], 'normalize/*': [normalizeOpinionatedCSS], 'sanitize': [sanitizeCSS], 'sanitize/forms': [sanitizeCSS, sanitizeFormsCSS], 'sanitize/page': [sanitizeCSS, sanitizePageCSS], 'sanitize/typography': [sanitizeCSS, sanitizeTypographyCSS], 'sanitize/*': [sanitizeCSS, sanitizeFormsCSS, sanitizePageCSS, sanitizeTypographyCSS] }); // get the resolved filename of a package/module function resolve(id) { return resolve[id] = resolve[id] || Module._resolveFilename(id, { id: currentFilename, filename: currentFilename, paths: Module._nodeModulePaths(currentDirname) }); } const cache = create(); async function readFile(filename) { filename = path.resolve(filename); cache[filename] = cache[filename] || create(); return new Promise((resolve, reject) => fs.stat(filename, (statsError, { mtime }) => statsError ? reject(statsError) : mtime === cache[filename].mtime ? resolve(cache[filename].data) : fs.readFile(filename, 'utf8', (readFileError, data) => readFileError ? reject(readFileError) : resolve((cache[filename] = { data, mtime }).data)))); } const cache$1 = create(null); var parse = ((filename, transformer) => readFile(filename).then( // cache the parsed css root css => cache$1[css] = cache$1[css] || postcss.parse(css, { from: filename })).then( // clone the cached root root => root.clone()).then( // transform the cloned root clone => Promise.resolve(transformer(clone)).then( // resolve the cloned root () => clone))); var postcssImportNormalize = (commentsTransformer => opts => { opts = create(opts); // return an postcss-import configuration return create({ load(filename, importOptions) { return filename in parsableFilenames // parse the file (the file and css are conservatively cached) ? parse(filename, commentsTransformer).then(root => root.toResult({ to: filename, map: true }).css) : typeof opts.load === 'function' // otherwise, use the override loader ? opts.load.call(null, filename, importOptions) // otherwise, return the (conservatively cached) contents of the file : readFile(filename); }, resolve(id, basedir, importOptions) { // get the css id by removing css extensions const cssId = id.replace(cssExtRegExp, ''); return cssId in resolvedFilenamesById // return the known resolved path for the css id ? resolvedFilenamesById[cssId] : typeof opts.resolve === 'function' // otherwise, use the override resolver ? opts.resolve.call(null, id, basedir, importOptions) // otherwise, return the id to be resolved by postcss-import : id; } }); }); const cssExtRegExp = /\.css\b/g; const postcssPlugin = (commentsTransformer, opts) => root => { const promises = []; const insertedFilenames = {}; // use @import insertion point root.walkAtRules(importRegExp, atrule => { // get name as a fallback value for the library (e.g. @import-normalize is like @import "normalize.css") const name = atrule.name.match(importRegExp)[1]; // get url from "library", 'library', url("library"), url('library'), or the fallback value const url = (atrule.params.match(paramsRegExp) || []).slice(1).find(part => part) || name; if (url) { // get the css id by removing css extensions const cssId = url.replace(cssExtRegExp$1, ''); if (cssId in resolvedFilenamesById) { // promise the library import is replaced with its contents promises.push(Promise.all(resolvedFilenamesById[cssId].filter( // ignore filenames that have already been inserted filename => insertedFilenames[filename] = opts.allowDuplicates || !(filename in insertedFilenames)).map( // parse the file (the file and css are conservatively cached) filename => parse(filename, commentsTransformer))).then(roots => { if (roots.length) { // combine all the library nodes returned by the parsed files const nodes = roots.reduce((all, root) => all.concat(root.nodes), []); // replace the import with all the library nodes atrule.replaceWith(...nodes); } })); } } }); return Promise.all([].concat( // promise the library imports are replaced with their contents promises, // promise certain libraries are prepended Promise.all([].concat(opts.forceImport || []).reduce( // filter the id to be a known id or boolean true (all, id) => { if (id === true) { all.push(...resolvedFilenamesById.normalize); } else if (typeof id === 'string') { const cssId = id.replace(cssExtRegExp$1, ''); if (cssId in resolvedFilenamesById) { all.push(...resolvedFilenamesById[cssId]); } } return all; }, []).filter( // ignore filenames that have already been inserted filename => insertedFilenames[filename] = opts.allowDuplicates || !(filename in insertedFilenames)).map( // parse the file (the file and css are conservatively cached) filename => parse(filename, commentsTransformer))).then(roots => { if (roots.length) { // combine all the library nodes returned by the parsed files const nodes = roots.reduce((all, root) => all.concat(root.nodes), []); // prepend the stylesheet with all the library nodes root.prepend(...nodes); } }))); }; const cssExtRegExp$1 = /\.css\b/g; const importRegExp = /^import(?:-(normalize|sanitize))?$/; const paramsRegExp = /^\s*(?:url\((?:"(.+)"|'(.+)')\)|"(.+)"|'(.+)')[\W\w]*$/; var index = postcss.plugin('postcss-normalize', opts => { opts = create(opts); const commentsTransformer = postcssBrowserComments(opts); const normalizeTransformer = postcssPlugin(commentsTransformer, opts); const postcssImportConfig = postcssImportNormalize(commentsTransformer); return assign(normalizeTransformer, { postcssImport: postcssImportConfig }); }); export default index; //# sourceMappingURL=index.esm.mjs.map