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    interpreter_token: missing (optional),
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            extends_clause: missing (optional),
            implements_clause: missing (optional),
            l_curly_token: L_CURLY@8..10 "{" [] [Whitespace(" ")],
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  2: JS_DIRECTIVE_LIST@0..0
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    0: JS_CLASS_DECLARATION@0..27
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--
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() {} }