diff --git a/client/config/paths.js b/client/config/paths.js
index 6d6de4cf6014..37ee9d40188d 100644
--- a/client/config/paths.js
+++ b/client/config/paths.js
@@ -26,19 +26,6 @@ const buildPath = process.env.BUILD_PATH || "build";
 
 const moduleFileExtensions = ["mjs", "js", "ts", "tsx", "json", "jsx"];
 
-// Resolve file paths in the same order as webpack
-const resolveModule = (resolveFn, filePath) => {
-  const extension = moduleFileExtensions.find((extension) =>
-    fs.existsSync(resolveFn(`${filePath}.${extension}`))
-  );
-
-  if (extension) {
-    return resolveFn(`${filePath}.${extension}`);
-  }
-
-  return resolveFn(`${filePath}.js`);
-};
-
 // config after eject: we're in ./config/
 const config = {
   dotenv: resolveApp("../.env"),
@@ -46,7 +33,6 @@ const config = {
   appBuild: resolveApp(buildPath),
   appPublic: resolveApp("public"),
   appHtml: resolveApp("public/index.html"),
-  appIndexJs: resolveModule(resolveApp, "src/index"),
   appPackageJson: resolveApp("../package.json"),
   appSrc: resolveApp("src"),
   appTsConfig: resolveApp("tsconfig.json"),
diff --git a/client/config/webpack.config.js b/client/config/webpack.config.js
index 7436b4bff215..351491e4cfff 100644
--- a/client/config/webpack.config.js
+++ b/client/config/webpack.config.js
@@ -158,7 +158,7 @@ function config(webpackEnv) {
       : isEnvDevelopment && "cheap-module-source-map",
     // These are the "entry points" to our application.
     // This means they will be the "root" imports that are included in JS bundle.
-    entry: paths.appIndexJs,
+    entry: "./src/index.tsx",
     output: {
       // The build folder.
       path: paths.appBuild,
diff --git a/client/scripts/build.js b/client/scripts/build.js
index a3ce6e071b91..0bfd8504997e 100644
--- a/client/scripts/build.js
+++ b/client/scripts/build.js
@@ -7,7 +7,6 @@ import fs from "fs-extra";
 import bfj from "bfj";
 import webpack from "webpack";
 import { checkBrowsers } from "react-dev-utils/browsersHelper.js";
-import checkRequiredFiles from "react-dev-utils/checkRequiredFiles.js";
 import formatWebpackMessages from "react-dev-utils/formatWebpackMessages.js";
 import printHostingInstructions from "react-dev-utils/printHostingInstructions.js";
 import FileSizeReporter from "react-dev-utils/FileSizeReporter.js";
@@ -37,11 +36,6 @@ const WARN_AFTER_CHUNK_GZIP_SIZE = 1024 * 1024;
 
 const isInteractive = process.stdout.isTTY;
 
-// Warn and crash if required files are missing
-if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
-  process.exit(1);
-}
-
 const argv = process.argv.slice(2);
 const writeStatsJson = argv.indexOf("--stats") !== -1;
 
diff --git a/client/scripts/start.js b/client/scripts/start.js
index 91f825a93d0e..a4949f991325 100644
--- a/client/scripts/start.js
+++ b/client/scripts/start.js
@@ -6,7 +6,6 @@ import chalk from "react-dev-utils/chalk.js";
 import webpack from "webpack";
 import WebpackDevServer from "webpack-dev-server";
 import clearConsole from "react-dev-utils/clearConsole.js";
-import checkRequiredFiles from "react-dev-utils/checkRequiredFiles.js";
 import { checkBrowsers } from "react-dev-utils/browsersHelper.js";
 import {
   choosePort,
@@ -36,11 +35,6 @@ const env = getClientEnvironment(paths.publicUrlOrPath.replace(/\/$/, ""));
 const useYarn = fs.existsSync(paths.yarnLockFile);
 const isInteractive = process.stdout.isTTY;
 
-// Warn and crash if required files are missing
-if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
-  process.exit(1);
-}
-
 // Tools like Cloud9 rely on this.
 const DEFAULT_PORT = parseInt(process.env.PORT, 10) || 3000;
 const HOST = process.env.HOST || "0.0.0.0";