biome_js_parser 0.5.7

Biome's JavaScript parser
Documentation 
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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 "B" [] [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: [
                        JsBogus {
                            items: [
                                TsDeclareModifier {
                                    modifier_token: DECLARE_KW@10..18 "declare" [] [Whitespace(" ")],
                                },
                            ],
                        },
                        JsLiteralMemberName {
                            value: IDENT@18..20 "fn" [] [],
                        },
                        JsParameters {
                            l_paren_token: L_PAREN@20..21 "(" [] [],
                            items: JsParameterList [],
                            r_paren_token: R_PAREN@21..23 ")" [] [Whitespace(" ")],
                        },
                        JsFunctionBody {
                            l_curly_token: L_CURLY@23..24 "{" [] [],
                            directives: JsDirectiveList [],
                            statements: JsStatementList [],
                            r_curly_token: R_CURLY@24..26 "}" [] [Whitespace(" ")],
                        },
                    ],
                },
            ],
            r_curly_token: R_CURLY@26..27 "}" [] [],
        },
    ],
    eof_token: EOF@27..28 "" [Newline("\n")] [],
}

0: JS_MODULE@0..28
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..27
    0: JS_CLASS_DECLARATION@0..27
      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 "B" [] [Whitespace(" ")]
      4: (empty)
      5: (empty)
      6: (empty)
      7: L_CURLY@8..10 "{" [] [Whitespace(" ")]
      8: JS_CLASS_MEMBER_LIST@10..26
        0: JS_BOGUS_MEMBER@10..26
          0: JS_BOGUS@10..18
            0: TS_DECLARE_MODIFIER@10..18
              0: DECLARE_KW@10..18 "declare" [] [Whitespace(" ")]
          1: JS_LITERAL_MEMBER_NAME@18..20
            0: IDENT@18..20 "fn" [] []
          2: JS_PARAMETERS@20..23
            0: L_PAREN@20..21 "(" [] []
            1: JS_PARAMETER_LIST@21..21
            2: R_PAREN@21..23 ")" [] [Whitespace(" ")]
          3: JS_FUNCTION_BODY@23..26
            0: L_CURLY@23..24 "{" [] []
            1: JS_DIRECTIVE_LIST@24..24
            2: JS_STATEMENT_LIST@24..24
            3: R_CURLY@24..26 "}" [] [Whitespace(" ")]
      9: R_CURLY@26..27 "}" [] []
  4: EOF@27..28 "" [Newline("\n")] []
--
class_declare_method.js:1:11 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × 'declare' modifier can only be used in TypeScript files
  
  > 1 │ class B { declare fn() {} }
      │           ^^^^^^^
    2 │ 
  
--
class B { declare fn() {} }