FIX Explicitly mention tsconfig file in webpack.config.js to avoid error while parsing tsconfig.json, The 'files' list in config file 'tsconfig.json' is empty

See (TypeStrong/ts-loader#405 (comment))

Author: simonschneider-db

webpack.config.js

@@ -103,6 +103,9 @@ const config = {
         test: /\.tsx?$/,
         use: 'ts-loader',
         exclude: /node_modules/,
+        options: {
+          configFile: "./tsconfig.json"
+        }
       },
       {
         test: /\.css$/,