text: // temp counter
  // add counting by model
  let idCount = 1;
  
  export default class ObjectId {
    constructor() {
      this.val = ObjectId._getLastId();
    }
  
    valueOf() {
      return this.val;
    }
  
    toString() {
      return this.val.toString();
    }
  
    static _getLastId() {
      return idCount++;
    }
  }
  