message: helper typing aliases
diff: @@ -12,8 +12,9 @@ declare type short = number;
  declare type int = number;
  declare type float = number;
  -declare type char = string;
  +declare type char = number;
  // declare type String = string;
  declare type List<T> = Array<T>;
  declare type Collection<T> = Array<T>;
  +declare type Deque<T> = Array<T>;
  