[idlharness-shadowrealm.window.html]
  prefs: [javascript.options.experimental.shadow_realms:true]
  [ErrorEvent interface: existence and properties of interface object]
    expected: FAIL

  [ErrorEvent interface object length]
    expected: FAIL

  [ErrorEvent interface object name]
    expected: FAIL

  [ErrorEvent interface: existence and properties of interface prototype object]
    expected: FAIL

  [ErrorEvent interface: existence and properties of interface prototype object's "constructor" property]
    expected: FAIL

  [ErrorEvent interface: existence and properties of interface prototype object's @@unscopables property]
    expected: FAIL

  [ErrorEvent interface: attribute message]
    expected: FAIL

  [ErrorEvent interface: attribute filename]
    expected: FAIL

  [ErrorEvent interface: attribute lineno]
    expected: FAIL

  [ErrorEvent interface: attribute colno]
    expected: FAIL

  [ErrorEvent interface: attribute error]
    expected: FAIL

  [PromiseRejectionEvent interface: existence and properties of interface object]
    expected: FAIL

  [PromiseRejectionEvent interface object length]
    expected: FAIL

  [PromiseRejectionEvent interface object name]
    expected: FAIL

  [PromiseRejectionEvent interface: existence and properties of interface prototype object]
    expected: FAIL

  [PromiseRejectionEvent interface: existence and properties of interface prototype object's "constructor" property]
    expected: FAIL

  [PromiseRejectionEvent interface: existence and properties of interface prototype object's @@unscopables property]
    expected: FAIL

  [PromiseRejectionEvent interface: attribute promise]
    expected: FAIL

  [PromiseRejectionEvent interface: attribute reason]
    expected: FAIL