JsModule {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    items: JsModuleItemList [
        JsVariableStatement {
            declaration: JsVariableDeclaration {
                await_token: missing (optional),
                kind: LET_KW@0..4 "let" [] [Whitespace(" ")],
                declarators: JsVariableDeclaratorList [
                    JsVariableDeclarator {
                        id: JsIdentifierBinding {
                            name_token: IDENT@4..5 "a" [] [],
                        },
                        variable_annotation: TsDefiniteVariableAnnotation {
                            excl_token: BANG@5..6 "!" [] [],
                            type_annotation: missing (required),
                        },
                        initializer: missing (optional),
                    },
                ],
            },
            semicolon_token: SEMICOLON@6..7 ";" [] [],
        },
    ],
    eof_token: EOF@7..8 "" [Newline("\n")] [],
}

0: JS_MODULE@0..8
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_MODULE_ITEM_LIST@0..7
    0: JS_VARIABLE_STATEMENT@0..7
      0: JS_VARIABLE_DECLARATION@0..6
        0: (empty)
        1: LET_KW@0..4 "let" [] [Whitespace(" ")]
        2: JS_VARIABLE_DECLARATOR_LIST@4..6
          0: JS_VARIABLE_DECLARATOR@4..6
            0: JS_IDENTIFIER_BINDING@4..5
              0: IDENT@4..5 "a" [] []
            1: TS_DEFINITE_VARIABLE_ANNOTATION@5..6
              0: BANG@5..6 "!" [] []
              1: (empty)
            2: (empty)
      1: SEMICOLON@6..7 ";" [] []
  4: EOF@7..8 "" [Newline("\n")] []
--
ts_variable_annotation_err.ts:1:7 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × expected `:` but instead found `;`
  
  > 1 │ let a!;
      │       ^
    2 │ 
  
  i Remove ;
  
--
let a!;