example.js

    computed: {
        hasScrolledNearEnd () {
            return !inRange(this.scrollView.endIndex, this.notifications.length - 5);
        },
    },
    watch: {
        hasScrolledNearEnd (nearEnd, previousValue) {
            if (nearEnd && !previousValue) {
                this.updateNotifications();
            }
        },
    },
    methods: {
        ...mapActions('NotificationsModule', [
            'updateNotifications',
        ]),

        update (startIndex, endIndex) {
            this.scrollView.startIndex = startIndex;
            this.scrollView.endIndex = endIndex;
        },
    },