JsModule {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    items: JsModuleItemList [
        JsExport {
            decorators: JsDecoratorList [],
            export_token: EXPORT_KW@0..7 "export" [] [Whitespace(" ")],
            export_clause: JsExportDefaultExpressionClause {
                default_token: DEFAULT_KW@7..15 "default" [] [Whitespace(" ")],
                expression: JsIdentifierExpression {
                    name: JsReferenceIdentifier {
                        value_token: IDENT@15..16 "a" [] [],
                    },
                },
                semicolon_token: missing (optional),
            },
        },
        JsBogusStatement {
            items: [
                COMMA@16..18 "," [] [Whitespace(" ")],
                IDENT@18..19 "b" [] [],
            ],
        },
        JsEmptyStatement {
            semicolon_token: SEMICOLON@19..20 ";" [] [],
        },
    ],
    eof_token: EOF@20..21 "" [Newline("\n")] [],
}

0: JS_MODULE@0..21
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..20
    0: JS_EXPORT@0..16
      0: JS_DECORATOR_LIST@0..0
      1: EXPORT_KW@0..7 "export" [] [Whitespace(" ")]
      2: JS_EXPORT_DEFAULT_EXPRESSION_CLAUSE@7..16
        0: DEFAULT_KW@7..15 "default" [] [Whitespace(" ")]
        1: JS_IDENTIFIER_EXPRESSION@15..16
          0: JS_REFERENCE_IDENTIFIER@15..16
            0: IDENT@15..16 "a" [] []
        2: (empty)
    1: JS_BOGUS_STATEMENT@16..19
      0: COMMA@16..18 "," [] [Whitespace(" ")]
      1: IDENT@18..19 "b" [] []
    2: JS_EMPTY_STATEMENT@19..20
      0: SEMICOLON@19..20 ";" [] []
  4: EOF@20..21 "" [Newline("\n")] []
--
export_default_expression_clause_err.js:1:17 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Expected a semicolon or an implicit semicolon after a statement, but found none
  
  > 1 │ export default a, b;
      │                 ^
    2 │ 
  
  i An explicit or implicit semicolon is expected here...
  
  > 1 │ export default a, b;
      │                 ^
    2 │ 
  
  i ...Which is required to end this statement
  
  > 1 │ export default a, b;
      │        ^^^^^^^^^
    2 │ 
  
--
export default a, b;