TreeView v1

app/javascript/controllers/bs_scrollspy_controller.js

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+import { Controller } from "@hotwired/stimulus"
+import * as bootstrap from 'bootstrap'
+
+// Connects to data-controller="bs-scrollspy"
+export default class extends Controller {
+  connect() {
+    // console.log(this.element)
+    const target = this.element.getAttribute("data-bs-scrollspy-target")
+    const scrollSpy = new bootstrap.ScrollSpy(this.element, {
+      target: target
+    })
+  }
+}