gistfile1.js

var Person = {
  'initialize': function(first, last) {
    this.first = first;
    this.last = last;
  },
  'speak': function(message) {
    return this.first + ' ' + this.last + ': ' + message;
  }
};

// Unary `<|`; equivalent to `{} <| Person`.
var kit = <| Person;
kit.initialize('Kit', 'Goncharov');