code: function Assurance(object, onlyFields, alias) {
    if (!(this instanceof Assurance)) {
      return new Assurance(object, onlyFields, alias)
    }
    
    this.restart(object, onlyFields, alias)
  
    return this
  }
docs: @param {Object} object     Object to validate
  @param {Array}  onlyFields Only validate fields in this array
  @param {Object} alias      Alias param value of errors
  
  @constructor