207 lines
5.1 KiB
JavaScript
207 lines
5.1 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = void 0;
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var _postcss = _interopRequireDefault(require("postcss"));
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var _postcssValueParser = _interopRequireDefault(require("postcss-value-parser"));
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var _utils = require("../utils");
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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const pluginName = 'postcss-url-parser';
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const isUrlFunc = /url/i;
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const isImageSetFunc = /^(?:-webkit-)?image-set$/i;
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const needParseDecl = /(?:url|(?:-webkit-)?image-set)\(/i;
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function getNodeFromUrlFunc(node) {
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return node.nodes && node.nodes[0];
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}
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function walkUrls(parsed, callback) {
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parsed.walk(node => {
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if (node.type !== 'function') {
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return;
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}
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if (isUrlFunc.test(node.value)) {
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const {
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nodes
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} = node;
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const isStringValue = nodes.length !== 0 && nodes[0].type === 'string';
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const url = isStringValue ? nodes[0].value : _postcssValueParser.default.stringify(nodes);
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callback(getNodeFromUrlFunc(node), url, false, isStringValue); // Do not traverse inside `url`
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// eslint-disable-next-line consistent-return
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return false;
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}
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if (isImageSetFunc.test(node.value)) {
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node.nodes.forEach(nNode => {
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const {
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type,
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value
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} = nNode;
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if (type === 'function' && isUrlFunc.test(value)) {
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const {
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nodes
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} = nNode;
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const isStringValue = nodes.length !== 0 && nodes[0].type === 'string';
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const url = isStringValue ? nodes[0].value : _postcssValueParser.default.stringify(nodes);
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callback(getNodeFromUrlFunc(nNode), url, false, isStringValue);
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}
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if (type === 'string') {
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callback(nNode, value, true, true);
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}
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}); // Do not traverse inside `image-set`
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// eslint-disable-next-line consistent-return
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return false;
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}
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});
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}
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function getUrlsFromValue(value, result, filter, decl) {
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if (!needParseDecl.test(value)) {
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return;
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}
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const parsed = (0, _postcssValueParser.default)(value);
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const urls = [];
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walkUrls(parsed, (node, url, needQuotes, isStringValue) => {
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if (url.trim().replace(/\\[\r\n]/g, '').length === 0) {
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result.warn(`Unable to find uri in '${decl ? decl.toString() : value}'`, {
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node: decl
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});
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return;
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}
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if (filter && !filter(url)) {
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return;
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}
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const splittedUrl = url.split(/(\?)?#/);
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const [urlWithoutHash, singleQuery, hashValue] = splittedUrl;
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const hash = singleQuery || hashValue ? `${singleQuery ? '?' : ''}${hashValue ? `#${hashValue}` : ''}` : '';
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const normalizedUrl = (0, _utils.normalizeUrl)(urlWithoutHash, isStringValue);
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urls.push({
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node,
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url: normalizedUrl,
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hash,
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needQuotes
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});
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}); // eslint-disable-next-line consistent-return
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return {
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parsed,
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urls
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};
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}
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function walkDecls(css, result, filter) {
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const items = [];
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css.walkDecls(decl => {
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const item = getUrlsFromValue(decl.value, result, filter, decl);
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if (!item || item.urls.length === 0) {
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return;
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}
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items.push({
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decl,
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parsed: item.parsed,
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urls: item.urls
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});
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});
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return items;
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}
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function flatten(array) {
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return array.reduce((a, b) => a.concat(b), []);
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}
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function collectUniqueUrlsWithNodes(array) {
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return array.reduce((accumulator, currentValue) => {
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const {
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url,
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needQuotes,
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hash,
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node
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} = currentValue;
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const found = accumulator.find(item => url === item.url && needQuotes === item.needQuotes && hash === item.hash);
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if (!found) {
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accumulator.push({
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url,
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hash,
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needQuotes,
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nodes: [node]
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});
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} else {
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found.nodes.push(node);
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}
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return accumulator;
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}, []);
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}
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var _default = _postcss.default.plugin(pluginName, options => function process(css, result) {
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const traversed = walkDecls(css, result, options.filter);
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const flattenTraversed = flatten(traversed.map(item => item.urls));
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const urlsWithNodes = collectUniqueUrlsWithNodes(flattenTraversed);
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const replacers = new Map();
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urlsWithNodes.forEach((urlWithNodes, index) => {
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const {
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url,
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hash,
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needQuotes,
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nodes
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} = urlWithNodes;
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const replacementName = `___CSS_LOADER_URL_REPLACEMENT_${index}___`;
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result.messages.push({
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pluginName,
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type: 'import',
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value: {
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type: 'url',
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replacementName,
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url,
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needQuotes,
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hash
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}
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}, {
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pluginName,
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type: 'replacer',
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value: {
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type: 'url',
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replacementName
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}
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});
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nodes.forEach(node => {
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replacers.set(node, replacementName);
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});
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});
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traversed.forEach(item => {
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walkUrls(item.parsed, node => {
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const replacementName = replacers.get(node);
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if (!replacementName) {
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return;
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} // eslint-disable-next-line no-param-reassign
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node.type = 'word'; // eslint-disable-next-line no-param-reassign
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node.value = replacementName;
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}); // eslint-disable-next-line no-param-reassign
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item.decl.value = item.parsed.toString();
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});
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});
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exports.default = _default;
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