jsesc is now transpiled with babel

webpack.config.js

@@ -53,7 +53,7 @@ module.exports = {
         rules: [
             {
                 test: /\.js$/,
-                exclude: /node_modules/,
+                exclude: /node_modules\/(?!jsesc)/,
                 loader: "babel-loader?compact=false"
             },
             {