Deprecation Guide for Deprecate import empty from @ember/object/computed

empty from @ember/object/computed is deprecated. It returned true when the dependent value was null, undefined, an empty string, or had length 0.

Migration

Implement the check in a getter.

Before:

import { empty } from '@ember/object/computed';
class ListState {
  items = [];
  @empty('items') isEmpty;
}

After:

import { isEmpty } from '@ember/utils';
class ListState {
  items = [];
  get isEmpty() { return isEmpty(this.items); }
}

Combine with ! for notEmpty replacement.