ifRails.env.development?# Make the built-in Rails routes available in development, otherwise they'd# get swallowed by the `namespace/project` route matcher below.## See https://git.io/va79Nget'/rails/mailers'=>'rails/mailers#index'get'/rails/mailers/:path'=>'rails/mailers#preview'get'/rails/info/properties'=>'rails/info#properties'get'/rails/info/routes'=>'rails/info#routes'get'/rails/info'=>'rails/info#index'mountLetterOpenerWeb::Engine,at: '/rails/letter_opener'end