class Importmap::Map

end
etag { Rails.application.importmap.digest(resolver: helpers) if request.format&.html? }
class ApplicationController < ActionController::Base

Example:

ensure that a html cache is invalidated when the import map is changed.
Returns a SHA1 digest of the import map json that can be used as a part of a page etag to

def digest(resolver:)
  Digest::SHA1.hexdigest(to_json(resolver: resolver).to_s)
end