[infra] Fix rollup warnings

[pomber]

Most warnings are:

• (!) Unresolved dependencies
• (!) Missing global variable names

Maybe also fix the unmet peer dependency warnings from yarn install.

[pomber]

Yarn v1 warnings aren't easy to hide, for the ones that don't make sense to solve this could be used:

yarn install 2> >(grep -v warning 1>&2)

-- from yarnpkg/yarn#6672 (comment)

Or even better:

yarn install 2>&1 | grep -v '^[warning|info]' 

And for the optional deps, there is this:

yarn --ignore-optional

-- from https://stackoverflow.com/a/59705056/1325646

[github-actions]

🚀 Issue was released in v0.3.0 🚀