valor de estímulo

<div data-controller="loader"
     data-loader-url-value="/messages">
</div>
// controllers/loader_controller.js
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static values = {
    url: String
  }

  connect() {
    fetch(this.urlValue).then(/* … */)
  }
}
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