types not exported correctly

[bartveneman]

Duplicate of several issues, including projectwallace/css-analyzer#394

Could not find a declaration file for module '@projectwallace/format-css'. '/**redacted**/node_modules/@projectwallace/format-css/dist/format.modern.js' implicitly has an 'any' type.
There are types at '/**redacted**/node_modules/@projectwallace/format-css/dist/index.d.ts', but this result could not be resolved when respecting package.json "exports". The '@projectwallace/format-css' library may need to update its package.json or typings.ts(7016)

This error is actually from format-css, but this package also has the same error.