JsModule {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    items: JsModuleItemList [
        JsClassDeclaration {
            decorators: JsDecoratorList [],
            abstract_token: missing (optional),
            class_token: CLASS_KW@0..6 "class" [] [Whitespace(" ")],
            id: JsIdentifierBinding {
                name_token: IDENT@6..8 "A" [] [Whitespace(" ")],
            },
            type_parameters: missing (optional),
            extends_clause: missing (optional),
            implements_clause: missing (optional),
            l_curly_token: L_CURLY@8..10 "{" [] [Whitespace(" ")],
            members: JsClassMemberList [
                JsBogusMember {
                    items: [
                        TsPropertySignatureModifierList [
                            TsAbstractModifier {
                                modifier_token: ABSTRACT_KW@10..19 "abstract" [] [Whitespace(" ")],
                            },
                        ],
                        JsLiteralMemberName {
                            value: IDENT@19..22 "foo" [] [],
                        },
                        SEMICOLON@22..24 ";" [] [Whitespace(" ")],
                    ],
                },
            ],
            r_curly_token: R_CURLY@24..25 "}" [] [],
        },
    ],
    eof_token: EOF@25..26 "" [Newline("\n")] [],
}

0: JS_MODULE@0..26
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..25
    0: JS_CLASS_DECLARATION@0..25
      0: JS_DECORATOR_LIST@0..0
      1: (empty)
      2: CLASS_KW@0..6 "class" [] [Whitespace(" ")]
      3: JS_IDENTIFIER_BINDING@6..8
        0: IDENT@6..8 "A" [] [Whitespace(" ")]
      4: (empty)
      5: (empty)
      6: (empty)
      7: L_CURLY@8..10 "{" [] [Whitespace(" ")]
      8: JS_CLASS_MEMBER_LIST@10..24
        0: JS_BOGUS_MEMBER@10..24
          0: TS_PROPERTY_SIGNATURE_MODIFIER_LIST@10..19
            0: TS_ABSTRACT_MODIFIER@10..19
              0: ABSTRACT_KW@10..19 "abstract" [] [Whitespace(" ")]
          1: JS_LITERAL_MEMBER_NAME@19..22
            0: IDENT@19..22 "foo" [] []
          2: SEMICOLON@22..24 ";" [] [Whitespace(" ")]
      9: R_CURLY@24..25 "}" [] []
  4: EOF@25..26 "" [Newline("\n")] []
--
class_member_modifier.js:1:11 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Only abstract classes can have abstract members
  
  > 1 │ class A { abstract foo; }
      │           ^^^^^^^^
    2 │ 
  
--
class A { abstract foo; }