Our designer bundle heavily bloated with not analyzable commonjs
generated by typescript.
The biggest problem comes from bundled icons library which esbuild
cannot tree shake because of cjs.
Another issue is broken code splitting. Packages in one piece are appear
in chunks and always loaded even with dynamic import and React.lazy.
To solve this I migrated each package to native node es modules.
Storybook and jest work almost without changes. Though it's not possible
to run remix in esm project (while still esm packages can be bundled for
ssr). And as a result designer jest failed because of cjs tests requires
from esm packages. As a solution I generated additional commonjs
artifacts in lib/cjs.
du -ck public/build
2336
1736
Bogdan Chadkin