diff --git a/packages/react-scripts/utils/createJestConfig.js b/packages/react-scripts/utils/createJestConfig.js
deleted file mode 100644
index 67a334263..000000000
--- a/packages/react-scripts/utils/createJestConfig.js
+++ /dev/null
@@ -1,51 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-'use strict';
-
-// Note: this file does not exist after ejecting.
-
-const fs = require('fs');
-const paths = require('../config/paths');
-
-module.exports = (resolve, rootDir) => {
-  // Use this instead of `paths.testsSetup` to avoid putting
-  // an absolute filename into configuration after ejecting.
-  const setupTestsFile = fs.existsSync(paths.testsSetup) ? '<rootDir>/src/setupTests.ts' : undefined;
-
-  // TODO: I don't know if it's safe or not to just use / as path separator
-  // in Jest configs. We need help from somebody with Windows to determine this.
-  const config = {
-    collectCoverageFrom: ['src/**/*.{ts,tsx}'],
-    setupFiles: [resolve('config/polyfills.js')],
-    setupTestFrameworkScriptFile: setupTestsFile,
-    testPathIgnorePatterns: [
-      '<rootDir>[/\\\\](build|docs|node_modules|scripts)[/\\\\]'
-    ],
-    testEnvironment: 'node',
-    testURL: 'http://localhost',
-    transform: {
-      '^.+\\.css$': resolve('config/jest/cssTransform.js'),
-      '^.+\\.tsx?$': resolve('config/jest/typescriptTransform.js'),
-      '^(?!.*\\.(css|json)$)': resolve('config/jest/fileTransform.js'),
-    },
-    transformIgnorePatterns: [
-      '[/\\\\]node_modules[/\\\\].+\\.(js|jsx)$'
-    ],
-    moduleNameMapper: {
-      '^react-native$': 'react-native-web'
-    },
-    moduleFileExtensions: ['ts', 'tsx', 'js'],
-    testRegex: '(/__tests__/.*|\\.(test|spec))\\.(ts|tsx|js)$',
-  };
-  if (rootDir) {
-    config.rootDir = rootDir;
-  }
-  return config;
-};