Еще один язык, транслируемый в JavaScript — ColaScript

function indexOf(arr, val){
  var $indexOf = Array.prototype.indexOf;
  if($indexOf)return $indexOf.call(arr, val);
  for(var i = 0, l = arr.length; l > i; i++)if(arr[i] === val)return i;
  return -1;
}
var getProto = Object.getPrototypeOf || function(it){
  return it.__proto__ || (it.constructor && it.constructor.prototype) || Object.prototype;
}
var create = Object.create || function(proto){
  var C = function(){};
  C.prototype = proto;
  return new C;
}
function clone(it, stack1, stack2){
  if(it == null || typeof it != 'object')return it;
  stack1 = stack1 || [];
  stack2 = stack2 || [];
  var index = indexOf(stack1, it);
  if(~index)return stack2[index];
  switch(Object.prototype.toString.call(it).slice(8, -1)){
    case 'Array':
      var result = [];
      stack1.push(it);
      stack2.push(result);
      for(var i = 0, l = it.length; l > i;)result.push(clone(it[i++], stack1, stack2));
      return result;
    case 'Object':
      var result = create(getProto(it));
      stack1.push(it);
      stack2.push(result);
      for(var key in it)if(Object.prototype.hasOwnProperty.call(it, key)){
        result[key] = clone(it[key], stack1, stack2);
      }
      return result;
  }
  return it;
}