React native install and configure npm packages for ios and andriod

I need to install and configure several npm packages one by one on ios and andriod and move some files like src, assets, app.js, index.js, etc. from an old application react native to a new application react native and make it work as the previous application has old npm packages and you should not update the packages with a single command as it is dangerous and the application can break [[if you are interested send a message asking for the old app and the new app]]