import { Controller } from '@hotwired/stimulus';

/** Ajoute des entrées CollectionType Symfony (prototype + __name__) pour la composition d’un match. */
export default class extends Controller {
    static targets = ['holder'];

    static values = {
        nextIndex: { type: Number, default: 0 },
    };

    add(event) {
        event.preventDefault();
        const proto = this.holderTarget.getAttribute('data-prototype');
        if (!proto) {
            return;
        }

        const html = proto.replace(/__name__/g, String(this.nextIndexValue));
        this.holderTarget.insertAdjacentHTML('beforeend', html);
        this.nextIndexValue++;
    }
}
<br />
<b>Fatal error</b>:  Uncaught TypeError: Invalid return value: callable object expected, &quot;int&quot; returned from &quot;/app/public/assets/controllers/match_composition_collection_controller-PvZzjK7.js&quot;. in /app/vendor/autoload_runtime.php:12
Stack trace:
#0 /app/public/index.php(5): require_once()
#1 {main}
  thrown in <b>/app/vendor/autoload_runtime.php</b> on line <b>12</b><br />