bundle add cssbundling-rails
./bin/rails css:install:bootstrap

bundle add jsbundling-rails
./bin/rails javascript:install:esbuild

$ esbuild app/javascript/*.* --bundle --sourcemap --outdir=app/assets/builds --public-path=assets
✘ [ERROR] Could not resolve "controllers"

    app/javascript/application.js:3:7:
      3 │ import "controllers"
        │        ~~~~~~~~~~~~~
        ╵        "./controllers"

  Use the relative path "./controllers" to reference the file "app/javascript/controllers/index.js".
  Without the leading "./", the path "controllers" is being interpreted as a package path instead.

1 error
node:child_process:866
    throw err;
    ^

Error: Command failed: /Users/cezar/Work/ror/bootstrap/node_modules/esbuild-darwin-arm64/bin/esbuild app/javascript/application.js --bundle --sourcemap --outdir=app/assets/builds --public-path=assets
    at checkExecSyncError (node:child_process:828:11)
    at Object.execFileSync (node:child_process:863:15)
    at Object.<anonymous> (/Users/cezar/Work/ror/bootstrap/node_modules/esbuild/bin/esbuild:209:28)
    at Module._compile (node:internal/modules/cjs/loader:1099:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:975:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12)
    at node:internal/main/run_main_module:17:47 {
  status: 1,
  signal: null,
  output: [ null, null, null ],
  pid: 94418,
  stdout: null,
  stderr: null
}

Node.js v17.8.0
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

yarn add @hotwired/turbo-rails
yarn add @hotwired/stimulus

--- a/app/javascript/application.js
+++ b/app/javascript/application.js
-import "controllers"
+import "./controllers";

--- a/app/javascript/controllers/index.js
+++ b/app/javascript/controllers/index.js
-import { application } from "controllers/application"
-
-// Eager load all controllers defined in the import map under controllers/**/*_controller
-import { eagerLoadControllersFrom } from "@hotwired/stimulus-loading"
-eagerLoadControllersFrom("controllers", application)
-
-// Lazy load controllers as they appear in the DOM (remember not to preload controllers in import map!)
-// import { lazyLoadControllersFrom } from "@hotwired/stimulus-loading"
-// lazyLoadControllersFrom("controllers", application)
+import { application } from "./application";

--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
     <%= stylesheet_link_tag "application", "data-turbo-track": "reload" %>
-    <%= javascript_importmap_tags %>
     <%= javascript_include_tag "application", "data-turbo-track": "reload", defer: true %>
   </head>

--- a/app/assets/config/manifest.js
+++ b/app/assets/config/manifest.js
 //= link_tree ../images
-//= link_tree ../../javascript .js
-//= link_tree ../../../vendor/javascript .js
 //= link_tree ../builds

yarn add bootstrap@3
yarn add jquery

import jquery from 'jquery'
window.jQuery = jquery
window.$ = jquery

...
import './add_jquery'  
  
import "jquery/dist/jquery"  
import "bootstrap/dist/js/bootstrap"
...

+ @import 'bootstrap/dist/css/bootstrap';
@import 'bootstrap-icons/font/bootstrap-icons';

rdbg --attach