LICENSE text in build folder

Question

When I build my site using create-react-app build, it creates a main.779c7054.js.LICENSE.txt which contains the license texts of the dependencies. In this case I am using Next.js and lets say I am using react-icons (licensed under MIT) by importing it to my component.js. The license says - "The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.". Do I need to include the MIT license text manually? if yes, where do I add it? or is the text already there in the source of node_modules and I don't need to do anything about it?

When I searched the build folder of the website created using Next.js I could find other license texts but there were no license text for react-icons package.

 *
 * Copyright (c) Facebook, Inc. and its affiliates.
...

 * Copyright 2017 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
...
etc

Answer 1

You might want to manually add the the MIT license language at the end of the license.txt file (if it is not already there). Based on your description, React does not seem to be perfectly include everything that is required.

Maybe each of the icons includes license and attribution language within their code. In that case it would not be necessary to add additional language in the licenses.txt and notices.txt files.