The parsing result of the return statement is wrong.

[fzxen]

I think the parsing result in the return statement is incorrect in the following example.

It is expected that it can be parsed into an additive expression. Like this

[fzxen]

I found the cause of the problem. tree-sitter-kotlin regards return/break/continue as expressions instead of statement.

{
  jump_expression: $ => choice(
      prec.left(PREC.RETURN_OR_THROW, seq("throw", $._expression)),
      prec.left(PREC.RETURN_OR_THROW, seq(choice("return", $._return_at), optional($._expression))),
      "continue",
      $._continue_at,
      "break",
      $._break_at
    ),
}

It hit the definition of infix expression.

{
  infix_expression: $ => prec.left(PREC.INFIX, seq($._expression, $.simple_identifier, $._expression)),
}

I think "return/break/continue/throw" should be converted to statement.

A distinction is often made between statements, which are executed, and expressions, which are evaluated. Expressions always evaluate to a value, which statements do not. However, expressions are often used as part of a larger statement. - copy from wikipedia

[ObserverOfTime]

This has been fixed.

(source_file [0, 0] - [4, 0]
  (function_declaration [0, 0] - [3, 1]
    (simple_identifier [0, 4] - [0, 8])
    (function_value_parameters [0, 8] - [0, 16]
      (parameter [0, 9] - [0, 15]
        (simple_identifier [0, 9] - [0, 10])
        (user_type [0, 12] - [0, 15]
          (type_identifier [0, 12] - [0, 15]))))
    (function_body [0, 17] - [3, 1]
      (statements [1, 4] - [2, 17]
        (property_declaration [1, 4] - [1, 23]
          (variable_declaration [1, 8] - [1, 14]
            (simple_identifier [1, 8] - [1, 14]))
          (additive_expression [1, 17] - [1, 23]
            (simple_identifier [1, 17] - [1, 18])
            (integer_literal [1, 21] - [1, 23])))
        (jump_expression [2, 4] - [2, 17]
          (additive_expression [2, 11] - [2, 17]
            (simple_identifier [2, 11] - [2, 12])
            (integer_literal [2, 15] - [2, 17])))))))