lib/add.js
function add(value, model) {
  var self = this
  var dict = self.data
  var codes = model && own.call(dict, model) ? dict[model].concat() : []

  push(dict, value, codes, self)

  return self
}
function add(value, model) {
  var self = this
  var dict = self.data
  var codes = model && own.call(dict, model) ? dict[model].concat() : []

  push(dict, value, codes, self)

  return self
}
function add ( value , model ) { var self = this var dict = self . data var codes = model && own . call ( dict , model ) ? dict [ model ] . concat ( ) : [ ] push ( dict , value , codes , self ) return self }
Add `value` to the checker.
Add value to the checker .