Piece of Vue On Rails Config

Vue.use(VueResource);
import Vue from 'vue'
import TurbolinksAdapter from 'vue-turbolinks'
import VueResource from 'vue-resources'

document.addEventListener('turbolinks:load', () => {
    Vue.http.headers.common['X-CSRF-token'] = document.querySelector('meta[name = "csrf-token"]').getAttribute('content')
    var element = document.getElementById('team-form');
  if (element != null) {
      var team = JSON.parse(element.dataset.team);
      var players_attributes = JSON.parse(element.dataset.playersAttributes);
      players_attributes.forEach(function (player) {
        player._destroy = null;
      });
      var app = new Vue({
        el: element,
          mixins: [TurbolinksAdapter],
          data: function () {
              return {team: team}
          }

      })

      console.log(app)
  }
})