Angular: How to build files which are the same as the files ng serve creates

I'm optimizing my Angular application and using webpack-bundle-analyzer to inspect the size of bundles. When I run ng build --stats-json it creates bundle.js files and creates a json file which webpack-bundle-analyzer parses. This works as expected, but is there a way to build angular application without optimizations which ng build performs, i.e. get the files which are the same files ng serve produces. I want this because my application is really big and it takes like 15 seconds to reload it while developing. So I would like to be able to inspect these files as well.

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