an empty greenwood.config.js breaks the build (due to devServer?)

[thescientist13]

Type of Change

• New Feature Request
• Documentation / Website
• Improvement / Suggestion
• Bug
• Other (please clarify below)

Summary

Having an empty greenwood.config.js results in a build error

module.exports = {};

$ yarn build
yarn run v1.12.3
$ node ./packages/cli/index.js build
-------------------------------------------------------
Welcome to Greenwood ♻️
-------------------------------------------------------
Reading project config
undefined
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Details

Seems to be related to how devServer is being error checked perhaps (as part of #22 ), with no fallback handling?
https://github.com/ProjectEvergreen/greenwood/blob/master/packages/cli/lib/config.js#L29