This is not defined

[hblab-huongdv]

I got this error when starting the application

[scailbc]

Somehow the arrow functions are not supoprted.

If you change this:

  _enableAllLinks () {
    const links = document.querySelectorAll('.js-item-link');

    Array.from(links).forEach(link => {
      link.classList.remove('item--disabled');
      link.removeEventListener('click', this._cancel);
    });

    return Promise.resolve();
  }

With this:

_enableAllLinks () {
    const links = document.querySelectorAll('.js-item-link');

    const linksArray = Array.from(links);
    for( let link of linksArray ) {
      link.removeEventListener('click', this._offlineCache._cancel);
    }

    return Promise.resolve();
  }

The error will disappear. Unfortunately you should change all the arrow functions.

I think this is a problem of configurations, for example, what version of NodeJS was used in this project? There are some global npm libraries that we should install?