I have the following pictures of my storage window compare to my build folder

the issue is some answers regarding similar cases, here on stack, say that firebase compresses your bundle before sending to client, in my case it is tripling the size of my js bundle, is this an issue in fire store on at my end , I am building my react app using this script ,
"winBuild": "set "GENERATE_SOURCEMAP=false" && react-scripts build"
npm run winBuild
and then
firestore deploy --only hosting
when I delete those to files from cache my cache storage goes from 6mb to 1.5 .. 2 js files 4.5mb is kind of weird. my site was deployed to heroku and I was serving using node.js express and compress middle ware and didn't have this problem.