[Rails Assets] Find the js file name

Rails Assets is so helpful and convenient.
But sometimes to find a js file name to write //= require some-js-file in application.js is conofused.

When you use Rails Assets, your Gemfile is like this.

source 'https://rails-assets.org' do
  gem 'rails-assets-hoge'
end

Move to the gem's directory. And show the js file name.

> cd $(bundle show 'rails-assets-hoge')
> ls app/assets/javascripts
hoge.js

Just write the js file name without .js

app/assets/javascripts/applicaton.js

//= require hoge