PolariTOON

First, sorry for the late answer. Not sure it counts as an use case given it's very specific, but here is at least how I came across the issue. I...

> Is that definition of what's included in a CSS snapshot filter ok? #212 defines an unique filter with several choices, including one choice per CSS Snapshot. As i said...

We have a webpack config in this app that defines a `ContextReplacementPlugin` for `date-fns` locales. The regexp should likely be changed from `/(en|fr|es)\/index\.js/` to ` /(en-US|fr|es)\/index\.js/`.

This seems to increase to size of the build significantly. Perhaps every type packages should be in `devDependencies` instead of `dependencies` :thinking:

This should be ready for a review (here's the demo link https://polaritoon.github.io/cozy-ui/react/ to show it builds the doc fine). Unfortunately i didn't manage to identify the issues with the styleguide...