Update webpack.config.ts

Co-authored-by: Vojtech Szocs <vojtech.szocs@gmail.com>

webpack.config.ts

@@ -83,7 +83,7 @@ if (process.env.NODE_ENV === "production") {
   config.output.chunkFilename = "[name]-chunk-[chunkhash].min.js";
   config.optimization.chunkIds = "deterministic";
   config.optimization.minimize = true;
-  config.devtool = undefined;
+  config.devtool = false;
 }
 
 export default config;