Mobx6 array index assignment does not work in Safari

[gylandon]

Hey mate,
In Safari 9.3.1, assigning an object to an array by index is not working for me. My code:

constructor() {
    makeAutoObservable(this);
    this.list.forEach((i, idx) => this.updateList(i, idx));
 }

updateList = (item, idx) => {
    const newItem = new Item(this, item); // another store
    this.list[idx] = newItem;
    return newItem;
  }

After updateList, this.list[0] is undefined, but the others are good.

The mobx version is 6.6.1.

I find the similar issue #364 (comment), and it was fixed in the previous version. Perhaps it has been missed in mobx6.

[urugator]

Released as 6.6.2, did not test, so let us know in case it still doesn't work.