настройка webpack

node_modules/postcss-selector-parser/dist/util/unesc.js

@@ -0,0 +1,20 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = unesc;
+var whitespace = '[\\x20\\t\\r\\n\\f]';
+var unescapeRegExp = new RegExp('\\\\([\\da-f]{1,6}' + whitespace + '?|(' + whitespace + ')|.)', 'ig');
+
+function unesc(str) {
+  return str.replace(unescapeRegExp, function (_, escaped, escapedWhitespace) {
+    var high = '0x' + escaped - 0x10000; // NaN means non-codepoint
+    // Workaround erroneous numeric interpretation of +"0x"
+    // eslint-disable-next-line no-self-compare
+
+    return high !== high || escapedWhitespace ? escaped : high < 0 ? // BMP codepoint
+    String.fromCharCode(high + 0x10000) : // Supplemental Plane codepoint (surrogate pair)
+    String.fromCharCode(high >> 10 | 0xd800, high & 0x3ff | 0xdc00);
+  });
+}
+
+module.exports = exports.default;