Is the computed property an array?

Question

Vue.js

Hello. There is such a component

export default {
  props: {
    db: {
      type: Array,
      default: ( ) =>  [ ]
    }
  },
  data() {
    return {
      peoples: this.db,
      listCount: 5,
      activePage: 0
    }
  },
  computed: {
    count: function( ) { return this.db.length+10 },
    pagesCount: function( ) { return Math.ceil( this.count / this.listCount ) },
    pages: function( ) {
      const pageCount = this.pageCount;
      console.log(this.pageCount); // undefined
      return new Array( pageCount ) },
  }
}

The computed property pages is always one element. During the initialization of this property, I understand that at the beginning of the pages initialization, the pagesCount variable is still initialized, but then the array for some reason is not reactive and was not recalculated when the pagesCount value was set.
console.log(this.pageCount); // undefined

Answer 1

It seems like a bug... pageCount and pagesCount are they intended, or are they not?