AWS4 package issues with React Application

[prateek1406]

Hi,
I need to generate a signed request to hit an API Gateway(secured with IAM). I need to implement this in a React application, so I am using aws4 to sign the request. But the React Application is giving me errors due to webpack issues like Webpack >5, which needs polyfill. I am trying to resolve them by writing a fallback in node_modules/react_scripts/config/webpack.config.js for crypto, stream etc. But still not working.
One fix I got from Stackoverflow:

1. Downgrade the react-scripts version from 5.0.0 to 4.0.3 but in that there are many package vulnerabilities. Please suggest how to use aws4 in React^18 and react-scripts^5.0.0