How to Check React App Version Quickly?

In this quick tutorial, we will learn how to check the React App version locally and globally.

There are various methods available to check the installed version of React app. And, we are going to have a look on those methods one by one in this tutorial.

We can verify the React version by directly visiting the package.json file and see the React app version at dependencies: {} section as given below.

{
  ...
  ...
  ...
  "name": "react-app",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^4.2.4",
    "@testing-library/react": "^9.5.0",
    "@testing-library/user-event": "^7.2.1",
    "react": "^16.13.1",
    "react-dom": "^16.13.1",
    "react-scripts": "3.4.1"
  },
  ...
  ...
  ...
}

The other method is also straightforward, you can check the React app version by heading over to node_modules/react/cjs/react.development.js.

You can see the react project version in the commented section as showing given below.

/** @license React v16.13.1
 * react.development.js
 *
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

How to Display React Version?

You can also directly the React version by using the below technique. We will add the following code in the React component and show the version of React via the web browser.

Open the src/App.js file and replace with the following code.

import React from 'react'
function App() {
  return (
    <div className="App">
        Here is the Latest React version: <strong>{React.version}</strong>
    </div>
  );
}
export default App;

Run the following command to view the React version.

npm start

Find React Version via Command

Moreover, we can find out the React and React Native version via command line tool. We just have to run the following commands to get the version details.

npm view react version
# 16.13.1

To get the React Native version use the below command.

npm view react-native version
# 0.62.0

Check Installed React Native Globally

Use the command to find out which react-native version is installed in your local development system.

npm ls react-native -g

It will display similar type of result on your terminal screen.

/usr/local/lib
└── react-native@0.61.5 

Check Local Packages Installed in React App

Sometimes, we need to check out what all packages are installed in a React app. Don’t worry, and it can quickly be done using a just simple command from your app’s root folder.

npm list --depth 0

It will display the following result:

#  react-app@0.1.0 /Users/user/Desktop/react-app
#  ├── @testing-library/jest-dom@4.2.4
#  ├── @testing-library/react@9.5.0
#  ├── @testing-library/user-event@7.2.1
#  ├── react@16.13.1
#  ├── react-dom@16.13.1
#  └── react-scripts@3.4.1