Convert js files in `client/src` to Typescript

Gitlab: #30
Change-Id: I679b8b0f30445a872d152ae93ecad5ff6c9a259f
diff --git a/client/webpack.config.js b/client/webpack.config.js
index 583b3aa..23781a2 100644
--- a/client/webpack.config.js
+++ b/client/webpack.config.js
@@ -13,7 +13,7 @@
 
 const mode = process.env.NODE_ENV || 'development';
 
-let entry = [resolve(__dirname, 'src', 'index.js')];
+let entry = [resolve(__dirname, 'src', 'index.tsx')];
 let plugins = [
   new HtmlWebpackPlugin({
     template: '!!raw-loader!' + resolve(__dirname, 'src', 'index.ejs'),