JsScript {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    statements: JsStatementList [
        JsLabeledStatement {
            label: JsLabel {
                value_token: IDENT@0..16 "label1" [Comments("// SCRIPT"), Newline("\n")] [],
            },
            colon_token: COLON@16..18 ":" [] [Whitespace(" ")],
            body: JsFunctionDeclaration {
                async_token: missing (optional),
                function_token: FUNCTION_KW@18..27 "function" [] [Whitespace(" ")],
                star_token: missing (optional),
                id: JsIdentifierBinding {
                    name_token: IDENT@27..28 "a" [] [],
                },
                type_parameters: missing (optional),
                parameters: JsParameters {
                    l_paren_token: L_PAREN@28..29 "(" [] [],
                    items: JsParameterList [],
                    r_paren_token: R_PAREN@29..31 ")" [] [Whitespace(" ")],
                },
                return_type_annotation: missing (optional),
                body: JsFunctionBody {
                    l_curly_token: L_CURLY@31..32 "{" [] [],
                    directives: JsDirectiveList [],
                    statements: JsStatementList [],
                    r_curly_token: R_CURLY@32..33 "}" [] [],
                },
            },
        },
    ],
    eof_token: EOF@33..34 "" [Newline("\n")] [],
}

0: JS_SCRIPT@0..34
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_STATEMENT_LIST@0..33
    0: JS_LABELED_STATEMENT@0..33
      0: JS_LABEL@0..16
        0: IDENT@0..16 "label1" [Comments("// SCRIPT"), Newline("\n")] []
      1: COLON@16..18 ":" [] [Whitespace(" ")]
      2: JS_FUNCTION_DECLARATION@18..33
        0: (empty)
        1: FUNCTION_KW@18..27 "function" [] [Whitespace(" ")]
        2: (empty)
        3: JS_IDENTIFIER_BINDING@27..28
          0: IDENT@27..28 "a" [] []
        4: (empty)
        5: JS_PARAMETERS@28..31
          0: L_PAREN@28..29 "(" [] []
          1: JS_PARAMETER_LIST@29..29
          2: R_PAREN@29..31 ")" [] [Whitespace(" ")]
        6: (empty)
        7: JS_FUNCTION_BODY@31..33
          0: L_CURLY@31..32 "{" [] []
          1: JS_DIRECTIVE_LIST@32..32
          2: JS_STATEMENT_LIST@32..32
          3: R_CURLY@32..33 "}" [] []
  4: EOF@33..34 "" [Newline("\n")] []