Documentation should be explicit about the default configs for development and production modes

[Maximaximum]

Do you want to request a feature or report a bug?
documentation

What is the current behavior?
I've spent quite some time trying to figure out what is the exact configuration that is used when mode is set to production, but haven't found a clear answer yet.

I need to tweak a single config option (collapse_vars) for the UglifyJsPlugin and, as far as I see, there is no way to do it, except for setting mode to none and explicitly re-defining the whole production config, having the only difference from the default production config that UglifyJsPlugin.uglifyOptions.collapse_vars = false. But how do I know the default production config? I can't find it in the documentation, so I'm trying to find this out by trial and errors, which is totally counter-productive.

If the current behavior is a bug, please provide the steps to reproduce.

What is the expected behavior?
It would be great if on this page https://webpack.js.org/concepts/mode/, instead of some weird diffs there were full and exact configs that are equivalent to setting mode to development or production.

If this is a feature request, what is motivation or use case for changing the behavior?
The user should be able to easily copy-and-paste the default config and tweak it to their needs.

Please mention other relevant information such as the browser version, Node.js version, webpack version, and Operating System.
This issue has been copied from webpack/webpack#7123 (comment)

[montogeek]

Full and exact configuration are described in https://webpack.js.org/concepts/mode/#usage

How do you think the documentation should be?

[edmorley]

@montogeek - I believe the OP is referring to things like these defaults, which are not documented anywhere other than in the source (I had to resort to the source too; so I agree with the OP's point):
https://github.com/webpack/webpack/blob/v4.6.0/lib/WebpackOptionsDefaulter.js#L273-L289

[montogeek]

@edmorley Thanks for clarification, I agree, we should add complete documentation for all the options used by these plugins.

Send a PR.

[Maximaximum]

@edmorley thanks for your help; indeed, that is what I mean

[kremerd]

There's also the devtool setting, which is automatically set to 'eval' in development mode.