============================================
JSDoc
============================================

/*
 * @return {void}
 */
function foo() {}

----

(program
  (comment)
  (function_declaration
    (identifier)
    (formal_parameters)
    (statement_block)))

============================================
JSX
============================================

const foo = 2;

<div>{{foo}}</div>

----

(program
  (lexical_declaration
    (variable_declarator
      (identifier)
      (number)))
  (expression_statement
    (jsx_element
      (jsx_opening_element
        (identifier))
      (jsx_expression
        (object
          (shorthand_property_identifier)))
      (jsx_closing_element
        (identifier)))))