Add main entry point to package.json

[wwilsman]

I'm submitting a bug report

Webpack version:
4.0.0

Webpack Karma version:
2.0.10

Karma version:
2.0.0

Current behavior:
With 56e99b0 the index was moved to src. Since the index is no longer at the root of this package, the main property of package.json needs to be updated to lib (where the index eventually ends up).

Without updating the entry point, karma cannot find the module. require('karma-webpack') also is unable to find the entry point.

Expected/desired behavior:
Karma and require should be able to find the module's entry point

[wwilsman]

As a workaround, this fixes the issue:

plugins: [
  'karma-webpack/lib'
]

[michael-ciniawsky]

#306 Should fix it, could someone quickly confirm by manually adding it to in node_modules ?

[dfederm]

For others who might be running into this issue, it manifests like this:

25 02 2018 15:05:45.726:ERROR [plugin]: Cannot find plugin "...\node_modules/karma-webpack".
  Did you forget to install it?
  npm install ...\node_modules/karma-webpack --save-dev
25 02 2018 15:05:45.731:ERROR [preprocess]: Can not load "webpack", it is not registered!
  Perhaps you are missing some plugin?

@wwilsman's mitigation works just fine for now, but note that you'll have to manually add all karma-* plugins to the list which you might be using (eg. karma-chrome-launcher, karma-jasmine, etc.)

[dfederm]

@michael-ciniawsky Can confirm. Made the change locally and it seems to have fixed the issue.

[michael-ciniawsky]

Just a sec cutting a release :)

[wwilsman]

Thanks for the quick turnaround guys!

[michael-ciniawsky]

Released in v2.0.11 🎉