JsScript {
    bom_token: missing (optional),
    interpreter_token: missing (optional),
    directives: JsDirectiveList [],
    statements: JsStatementList [
        JsExpressionStatement {
            expression: JsIdentifierExpression {
                name: JsReferenceIdentifier {
                    value_token: IDENT@0..13 "foo" [Comments("// SCRIPT"), Newline("\n")] [],
                },
            },
            semicolon_token: SEMICOLON@13..14 ";" [] [],
        },
        JsExpressionStatement {
            expression: JsIdentifierExpression {
                name: JsReferenceIdentifier {
                    value_token: IDENT@14..20 "yield" [Newline("\n")] [],
                },
            },
            semicolon_token: SEMICOLON@20..21 ";" [] [],
        },
        JsExpressionStatement {
            expression: JsIdentifierExpression {
                name: JsReferenceIdentifier {
                    value_token: IDENT@21..27 "await" [Newline("\n")] [],
                },
            },
            semicolon_token: SEMICOLON@27..28 ";" [] [],
        },
    ],
    eof_token: EOF@28..29 "" [Newline("\n")] [],
}

0: JS_SCRIPT@0..29
  0: (empty)
  1: (empty)
  2: JS_DIRECTIVE_LIST@0..0
  3: JS_STATEMENT_LIST@0..28
    0: JS_EXPRESSION_STATEMENT@0..14
      0: JS_IDENTIFIER_EXPRESSION@0..13
        0: JS_REFERENCE_IDENTIFIER@0..13
          0: IDENT@0..13 "foo" [Comments("// SCRIPT"), Newline("\n")] []
      1: SEMICOLON@13..14 ";" [] []
    1: JS_EXPRESSION_STATEMENT@14..21
      0: JS_IDENTIFIER_EXPRESSION@14..20
        0: JS_REFERENCE_IDENTIFIER@14..20
          0: IDENT@14..20 "yield" [Newline("\n")] []
      1: SEMICOLON@20..21 ";" [] []
    2: JS_EXPRESSION_STATEMENT@21..28
      0: JS_IDENTIFIER_EXPRESSION@21..27
        0: JS_REFERENCE_IDENTIFIER@21..27
          0: IDENT@21..27 "await" [Newline("\n")] []
      1: SEMICOLON@27..28 ";" [] []
  4: EOF@28..29 "" [Newline("\n")] []