WebpackerConfigShower tries to print webpack.config.js in Webpacker gem to STDOUT.
But WebpackerConfigShower cannot print
plugins part, it can print plugins only as expanded objects.
Add this line to your application's Gemfile:
gem 'webpacker_config_shower', group: :development
And then execute:
$ bin/rails webpacker:config:show
The gem is available as open source under the terms of the MIT License.