Encountering 'react-scripts not found' error after executing npm start

I copied a React application from my repository and attempted to run it locally. Initially, I executed the following commands to set up the environment:

npm install -g create-react-app
npm install --save react react-dom

After setting it up, I tried to start the application with:

npm start

However, I receive an error indicating that react-scripts cannot be located. Interestingly, this project runs smoothly on my other device where I originally built it. Unfortunately, I’m facing this issue across all systems, whether they are running Windows or Mac. What could be the reason for this problem and what steps can I take to resolve it?

i had the same issue, turns out my create-react-app was outdated. check the version using npx create-react-app --version. sometimes just deleting node_modules and package-lock.json and then running a fresh npm install really helps with these problems!

This issue typically arises when react-scripts is either missing from your package.json or there is a version mismatch. I experienced a similar problem while cloning a repository recently. First, verify that your package.json contains react-scripts within the dependencies or devDependencies. If you find it missing, run npm install react-scripts to add it. Additionally, check that your package.json includes the scripts section with start, build, and test commands. Sometimes, the package.json can become corrupted during the transfer process. In such cases, it’s advisable to delete the package-lock.json file and the entire node_modules folder before running npm install again, which should resolve any dependency conflicts.

I encountered a similar problem when transferring a React project to another device. The absence of react-scripts is usually due to the fact that the node_modules folder is not included when copying projects. To fix this, execute npm install in your project directory, which will restore all dependencies from your package.json file, including react-scripts. If that does not resolve the issue, consider running npm install react-scripts --save-dev specifically. Ensure that you’re executing npm start from the directory containing your package.json.