Ember.js computed property not waiting for asynchronous RSVP promise

I have an Ember.js component where I'm trying to use a computed property to determine its visibility based on the result of an asynchronous RSVP promise. However, it seems like the computed property is not waiting for the promise to resolve, resulting in the count object being undefined.

Here's an excerpt from my component code:

import Component from '@ember/component';
import { computed } from '@ember/object';
import { inject as service } from '@ember/service';
import RSVP from 'rsvp';

export default Component.extend({
    classNames: ['count'],
    countService: service('count'),

    getCount: computed(function () {
        debugger;
        RSVP.all([
            this.get('countService').getCount()
        ]).then(([count]) => {
            return Number(count);
        });
    }),

    isVisible: computed('getCount', function () {
        debugger;
        let count = this.get('getCount');
        return count !== undefined && count > 0;
    }),
});

As you can see, the getCount computed property is calling a method getCount() on the countService injected service. This method returns a promise that resolves with the count value.

In the isVisible computed property, I'm trying to access the count value returned by the getCount computed property. However, when I log the value of count during debugging, it shows up as undefined, even though the promise should have resolved by that point.

I'm not sure why the computed property is not waiting for the promise to resolve before trying to access the value. Am I missing something in my implementation? Is there a better way to handle asynchronous dependencies in Ember.js computed properties?

Any help or insights would be greatly appreciated!