Nx with Angular and Webpack: tree shaking and barrel file from libraries

To start with, here's a minimal repo where you can see the behaviour I'm going to describe: repo

And here's the nx graph of workspace from repo:



My question is how can I perform tree shaking on barrel files from data-access libraries? Running webpack-bundle-analyzer(run nx analyze host inside the workspace from provided repo) shows that everything from data-access ends up in initial bundle(or am I misinterpreting the results?). I understand that barrel files from data-access libraries re-export every module the lib has, but I was expecting tree shaking come into action.

Output of nx analyze host:



Both books-data-access and users-data-access libraries have sideEffects: false in their package.json files and I use only a single module from each data-access lib inside host app.

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