Hacky classnames map for locals loader

Author: Chaptykov

lib/localsLoader.js

@@ -11,6 +11,7 @@ var assign = require("object-assign");
 
 module.exports = function(content) {
 	if(this.cacheable) this.cacheable();
+  var that = this;
 	var callback = this.async();
 	var loaderOptions = loaderUtils.parseQuery(this.query);
 	var configKey = loaderOptions.config || "cssLoader";
@@ -19,6 +20,12 @@ module.exports = function(content) {
 	var moduleMode = query.modules || query.module;
 	var camelCaseKeys = query.camelCase || query.camelcase;
 
+  if (!this._compilation.cssLoader) {
+    this._compilation.cssLoader = {
+      classnames: []
+    };
+  }
+
 	processCss(content, null, {
 		mode: moduleMode ? "local" : "global",
 		query: query,
@@ -27,6 +34,11 @@ module.exports = function(content) {
 	}, function(err, result) {
 		if(err) return callback(err);
 
+    that._compilation.cssLoader.classnames.push({
+      file: result.map.file,
+      exports: result.exports
+    });
+
 		// for importing CSS
 		var importUrlPrefix = getImportPrefix(this, query);