ac.selectItem(0) bug

[wonderbeyond]

The selectItem method is expected to select the first item, as described in document.

Unfortunately, it's not working as described. Because 0 is evaluated for bool value as one condition in selectItem() to determine whether set selectedIndex attr. so selectedIndex will keep the initial null value if 0 passed, then error occurs:

https://github.com/aralejs/autocomplete/blob/master/src/autocomplete.js#L134

The correct code maybe:

  selectItem: function (index) {
    if (this.items) {
      if ((index || index === 0) && this.items.length > index && index >= -1) {
        this.set('selectedIndex', index);
      }
      this._handleSelection();
    }
  },