prototype_legacy_helper VS Webpacker

there was the Prototype library since who knows when but it was phased out gradually (~2010),

This is done through the Webpacker::DevServerProxy which is a rack middleware that is added by Webpacker.

Using Webpacker in Rails provides several advantages over the traditional asset pipeline. First, Webpacker uses JavaScript modules, which allows for better code organization and improved code reusability. Second, it offers modern frontend build tools, such as Babel and PostCSS, for transforming and compiling assets. Third, it provides faster build times and faster runtime performance through code splitting and lazy loading. Fourth, it offers better integration with JavaScript frameworks such as React, Vue, and Angular. Overall, Webpacker offers a more flexible and modern asset management solution for Rails applications. And while Webpacker is being retired, this initiative is to consolidate our code accordingly before moving our bundler to another solution.

This article is replace Webpacker with Simpacker and webpack.

in ruby ​​on rails 7 what is the best way to properly install Angular because I can't find any documentation about it. The only tutorial that exists uses webpacker (https://github.com/rails/webpacker) but unfortunately it is no longer supported and no longer up to date in terms of security.

From the webpacker gem:

Check this: https://github.com/rails/webpacker/issues/2825

instead of using webpacker you should move to esbuild or importmap. Webpacker has been retired a few months ago (cf https://github.com/rails/webpacker) There are videos explained how to set this up (e.g. for importmap https://learnetto.com/tutorials/how-to-use-react-with-rails-7

Took me 2 days to find this bug report: https://github.com/rails/webpacker/issues/3188 (thanks again tagliala)

But it's there in the webpacker README now, if anyone hasn't seen it. https://github.com/rails/webpacker