Fix Import Maps from Rails 7.0.0.alpha2 to Rails 7.0.0

example.md

1. Make sure sprockets-rails is installed. This wasn't the case when using Rails 7.0.0.alpha2. I think this was the most important step.

# Gemfile
gem "sprockets-rails"

2. Add preload: true to the necessary assets. I'm just copying the default Rails 7.0.0 config. This differs from the original Rails 7.0.0.alpha2 install.

# config/importmap.rb
# Pin npm packages by running ./bin/importmap

pin "application", preload: true
pin "@hotwired/turbo-rails", to: "turbo.min.js", preload: true
pin "@hotwired/stimulus", to: "stimulus.min.js", preload: true
pin "@hotwired/stimulus-loading", to: "stimulus-loading.js", preload: true
pin_all_from "app/javascript/controllers", under: "controllers"

3. Clear the cache. I'm not sure if this is necessary, but it migt help helped.

rails tmp:clear