Index: frontend/node_modules/eslint-config-react-app/jest.js
===================================================================
--- frontend/node_modules/eslint-config-react-app/jest.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint-config-react-app/jest.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,62 @@
+/**
+ * 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';
+
+// Fix eslint shareable config (https://github.com/eslint/eslint/issues/3458)
+require('@rushstack/eslint-patch/modern-module-resolution');
+
+// We use eslint-loader so even warnings are very visible.
+// This is why we prefer to use "WARNING" level for potential errors,
+// and we try not to use "ERROR" level at all.
+
+module.exports = {
+  plugins: ['jest', 'testing-library'],
+  overrides: [
+    {
+      files: ['**/__tests__/**/*', '**/*.{spec,test}.*'],
+      env: {
+        'jest/globals': true,
+      },
+      // A subset of the recommended rules:
+      rules: {
+        // https://github.com/jest-community/eslint-plugin-jest
+        'jest/no-conditional-expect': 'error',
+        'jest/no-identical-title': 'error',
+        'jest/no-interpolation-in-snapshots': 'error',
+        'jest/no-jasmine-globals': 'error',
+        'jest/no-jest-import': 'error',
+        'jest/no-mocks-import': 'error',
+        'jest/valid-describe-callback': 'error',
+        'jest/valid-expect': 'error',
+        'jest/valid-expect-in-promise': 'error',
+        'jest/valid-title': 'warn',
+
+        // https://github.com/testing-library/eslint-plugin-testing-library
+        'testing-library/await-async-query': 'error',
+        'testing-library/await-async-utils': 'error',
+        'testing-library/no-await-sync-query': 'error',
+        'testing-library/no-container': 'error',
+        'testing-library/no-debugging-utils': 'error',
+        'testing-library/no-dom-import': ['error', 'react'],
+        'testing-library/no-node-access': 'error',
+        'testing-library/no-promise-in-fire-event': 'error',
+        'testing-library/no-render-in-setup': 'error',
+        'testing-library/no-unnecessary-act': 'error',
+        'testing-library/no-wait-for-empty-callback': 'error',
+        'testing-library/no-wait-for-multiple-assertions': 'error',
+        'testing-library/no-wait-for-side-effects': 'error',
+        'testing-library/no-wait-for-snapshot': 'error',
+        'testing-library/prefer-find-by': 'error',
+        'testing-library/prefer-presence-queries': 'error',
+        'testing-library/prefer-query-by-disappearance': 'error',
+        'testing-library/prefer-screen-queries': 'error',
+        'testing-library/render-result-naming-convention': 'error',
+      },
+    },
+  ],
+};