code: function applyPrefixToName(prefix, name) {
    if (!name) {
      return prefix;
    } else if (name[0] === '-') {
      return prefix + name;
    } else {
      return prefix + '__' + name;
    }
  }
docs: ============================== Class Name Prefixer ============================== 
  String representation of component state for styling with class names.
  
  Expects an array of strings OR a string/object pair:
  - className(['comp', 'comp-arg', 'comp-arg-2'])
  @returns 'react-select__comp react-select__comp-arg react-select__comp-arg-2'
  - className('comp', { some: true, state: false })
  @returns 'react-select__comp react-select__comp--some'