code: function TypeAlias(node, print) {
    this.push("type ");
    print.plain(node.id);
    print.plain(node.typeParameters);
    this.space();
    this.push("=");
    this.space();
    print.plain(node.right);
    this.semicolon();
  }
docs: Prints TypeAlias, prints id, typeParameters, and right.