This is a testharness.js-based test.
[FAIL] [[DefineOwnProperty]]
  assert_false: supported non-index property name expected false got true
[FAIL] [[Get]] (named property visibility algorithm)
  assert_equals: supported indexed property name expected (number) 20 but got (object) Element node <div id="0"></div>
[FAIL] [[Set]] (direct)
  assert_false: expected false got true
[FAIL] [[Delete]]
  assert_throws_js: existing symbol property name function "() => { delete object[key]; }" did not throw
Harness: the test ran to completion.