Multiple importmaps

multiple_importmaps.rb

# config/initializers/public_importmap.rb
Rails.application.config.public_importmap = Importmap::Map.new
Rails.application.config.public_importmap.draw(Rails.root.join("config/public_importmap.rb"))

# app/helpers/application_helper.rb
# copied from importmaps replacing javascript_inline_importmap_tag
#
# !!! No longer needed after this change https://github.com/rails/importmap-rails/pull/187
#
# def javascript_public_importmap_tags(entry_point = "application", shim: true)
#   safe_join [
#     javascript_inline_importmap_tag(Rails.application.config.public_importmap.to_json(resolver: self)),
#     javascript_importmap_module_preload_tags(Rails.application.config.public_importmap)
#     (javascript_importmap_shim_nonce_configuration_tag if shim),
#     (javascript_importmap_shim_tag if shim),
#     javascript_import_module_tag(entry_point)
#   ].compact, "\n"
# end

# config/public_importmap.rb
# whatever you need
pin "@hotwired/turbo-rails", to: "turbo.js"
pin "public"

Line 10: javascript_importmap_module_preload_tags

Unless you want to prefetch everything including those in the default importmap you probably want to use

javascript_importmap_module_preload_tags(Rails.application.config.public_importmap)

Line 10: javascript_importmap_module_preload_tags

Unless you want to prefetch everything including those in the default importmap you probably want to use

javascript_importmap_module_preload_tags(Rails.application.config.public_importmap)

Fixed, thanks!