Connect more things to --debug

[edmorley]

Neutrino has a --debug CLI option, which currently only affects two things:

• it enables babel-preset-env debug mode
• it causes --inspect to be passed to start-server-webpack-plugin

I've had a bit of a look, and there are a few more places where we could choose to vary behaviour when --debug is passed:

• [X] #391 copy-webpack-plugin: debug defaults to warning, but can also be set to info or debug (docs)
• [x] #392 clean-webpack-plugin: verbose defaults to false, but could be set to true (docs)
• [X] #754 neutrino-middleware-eslint: could enable eslint debug output like this
• [x] #394 neutrino-preset-karma: logLevel defaults to LOG_INFO, but could be set to LOG_DEBUG (docs)
• [x] #523 neutrino-preset-jest: the jest API has verbose and debug options that could be enabled (docs)
• [x] #485 ModuleConcatenationPlugin: the stats optimizationBailout option could be set (docs)
• [ ] neutrino-middleware-dev-server: The noInfo and stats configs could be adjusted (docs and docs)
• [ ] neutrino build command: the stats config could be adjusted (docs)

I'll open PRs for some of the above. If anyone wants to help out, or can think of others to add to the list, please say :-)

[ahulab]

Hey I'd like to jump in and tackle the Jest issue as a first contribution if that's cool

• neutrino-preset-jest: the jest API has verbose and debug options that could be enabled (docs)

[helfi92]

@ahulab Go for it :)

[edmorley]

I think we're mostly done here; anything else we can file separate issues for.