Add workaround to disable code splitting

scripts/build-non-split.js

@@ -0,0 +1,16 @@
+#!/usr/bin/env node
+
+// Disables code splitting into chunks
+// See https://github.com/facebook/create-react-app/issues/5306#issuecomment-433425838
+
+const rewire = require("rewire");
+const defaults = rewire("react-scripts/scripts/build.js");
+let config = defaults.__get__("config");
+
+config.optimization.splitChunks = {
+  cacheGroups: {
+    default: false
+  }
+};
+
+config.optimization.runtimeChunk = false;