Index: frontend/node_modules/babel-preset-react-app/webpack-overrides.js
===================================================================
--- frontend/node_modules/babel-preset-react-app/webpack-overrides.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/babel-preset-react-app/webpack-overrides.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';
+
+const crypto = require('crypto');
+
+const macroCheck = new RegExp('[./]macro');
+
+module.exports = function () {
+  return {
+    // This function transforms the Babel configuration on a per-file basis
+    config(config, { source }) {
+      // Babel Macros are notoriously hard to cache, so they shouldn't be
+      // https://github.com/babel/babel/issues/8497
+      // We naively detect macros using their package suffix and add a random token
+      // to the caller, a valid option accepted by Babel, to compose a one-time
+      // cacheIdentifier for the file. We cannot tune the loader options on a per
+      // file basis.
+      if (macroCheck.test(source)) {
+        return Object.assign({}, config.options, {
+          caller: Object.assign({}, config.options.caller, {
+            craInvalidationToken: crypto.randomBytes(32).toString('hex'),
+          }),
+        });
+      }
+      return config.options;
+    },
+  };
+};