class ApplicationViewComponent < ViewComponent::Base
  include ApplicationHelper
end
class FooComponent < ApplicationViewComponent 
end 
How can I include not only ApplicationHelper but also user created all helper files in view component?
class ApplicationViewComponent < ViewComponent::Base
  include ApplicationHelper
end
class FooComponent < ApplicationViewComponent 
end 
How can I include not only ApplicationHelper but also user created all helper files in view component?
Use the helpers proxy instead to access your Rails helpers.
class UserComponent < ViewComponent::Base
  def profile_icon
    helpers.icon :user
  end
end
And use delegate if you want to simplify the calls:
class UserComponent < ViewComponent::Base
  delegate :icon, to: :helpers
  def profile_icon
    icon :user
  end
end
Only include the helper modules when actually needed.