JsModule {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    items: JsModuleItemList [
        JsClassDeclaration {
            decorators: JsDecoratorList [],
            abstract_token: ABSTRACT_KW@0..9 "abstract" [] [Whitespace(" ")],
            class_token: CLASS_KW@9..15 "class" [] [Whitespace(" ")],
            id: JsIdentifierBinding {
                name_token: IDENT@15..17 "A" [] [Whitespace(" ")],
            },
            type_parameters: missing (optional),
            extends_clause: missing (optional),
            implements_clause: missing (optional),
            l_curly_token: L_CURLY@17..18 "{" [] [],
            members: JsClassMemberList [
                JsBogusMember {
                    items: [
                        TsPropertySignatureModifierList [
                            TsAbstractModifier {
                                modifier_token: ABSTRACT_KW@18..33 "abstract" [Newline("\n"), Whitespace("     ")] [Whitespace(" ")],
                            },
                        ],
                        JsLiteralMemberName {
                            value: IDENT@33..37 "name" [] [],
                        },
                        JsBogus {
                            items: [
                                BANG@37..38 "!" [] [],
                                TsTypeAnnotation {
                                    colon_token: COLON@38..40 ":" [] [Whitespace(" ")],
                                    ty: TsStringType {
                                        string_token: STRING_KW@40..46 "string" [] [],
                                    },
                                },
                            ],
                        },
                        SEMICOLON@46..47 ";" [] [],
                    ],
                },
            ],
            r_curly_token: R_CURLY@47..49 "}" [Newline("\n")] [],
        },
    ],
    eof_token: EOF@49..50 "" [Newline("\n")] [],
}

0: JS_MODULE@0..50
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..49
    0: JS_CLASS_DECLARATION@0..49
      0: JS_DECORATOR_LIST@0..0
      1: ABSTRACT_KW@0..9 "abstract" [] [Whitespace(" ")]
      2: CLASS_KW@9..15 "class" [] [Whitespace(" ")]
      3: JS_IDENTIFIER_BINDING@15..17
        0: IDENT@15..17 "A" [] [Whitespace(" ")]
      4: (empty)
      5: (empty)
      6: (empty)
      7: L_CURLY@17..18 "{" [] []
      8: JS_CLASS_MEMBER_LIST@18..47
        0: JS_BOGUS_MEMBER@18..47
          0: TS_PROPERTY_SIGNATURE_MODIFIER_LIST@18..33
            0: TS_ABSTRACT_MODIFIER@18..33
              0: ABSTRACT_KW@18..33 "abstract" [Newline("\n"), Whitespace("     ")] [Whitespace(" ")]
          1: JS_LITERAL_MEMBER_NAME@33..37
            0: IDENT@33..37 "name" [] []
          2: JS_BOGUS@37..46
            0: BANG@37..38 "!" [] []
            1: TS_TYPE_ANNOTATION@38..46
              0: COLON@38..40 ":" [] [Whitespace(" ")]
              1: TS_STRING_TYPE@40..46
                0: STRING_KW@40..46 "string" [] []
          3: SEMICOLON@46..47 ";" [] []
      9: R_CURLY@47..49 "}" [Newline("\n")] []
  4: EOF@49..50 "" [Newline("\n")] []
--
ts_abstract_property_cannot_be_definite.ts:2:19 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × A definite assignment operator '!' cannot appear on an 'abstract' property.
  
    1 │ abstract class A {
  > 2 │      abstract name!: string;
      │                   ^
    3 │ }
    4 │ 
  
--
abstract class A {
     abstract name!: string;
}