Provide eslint parser/plugin

[stellarhoof]

Eslint cannot parse source meant to be processed by snowpack's pipeline directly. While one could specify a babel parser for eslint and replicate snowpack's features on babel, certain things such as css imports cannot be handled this way. It'd be awesome if there was a "snowpack parser" that used snowpack's pipeline. Ref: https://eslint.org/docs/developer-guide/working-with-custom-parsers.

Alternatively, instead of an eslint parser, we could provide a plugin with a processor. Ref: https://eslint.org/docs/user-guide/configuring#specifying-processor

Ignore this. I got confused. It was an error with my configuration.