This is a testharness.js-based test.
[FAIL] WorkletAnimation interface: existence and properties of interface object
assert_own_property: self does not have own property "WorkletAnimation" expected property "WorkletAnimation" missing
[FAIL] WorkletAnimation interface object length
assert_own_property: self does not have own property "WorkletAnimation" expected property "WorkletAnimation" missing
[FAIL] WorkletAnimation interface object name
assert_own_property: self does not have own property "WorkletAnimation" expected property "WorkletAnimation" missing
[FAIL] WorkletAnimation interface: existence and properties of interface prototype object
assert_own_property: self does not have own property "WorkletAnimation" expected property "WorkletAnimation" missing
[FAIL] WorkletAnimation interface: existence and properties of interface prototype object's "constructor" property
assert_own_property: self does not have own property "WorkletAnimation" expected property "WorkletAnimation" missing
[FAIL] WorkletAnimation interface: existence and properties of interface prototype object's @@unscopables property
assert_own_property: self does not have own property "WorkletAnimation" expected property "WorkletAnimation" missing
[FAIL] WorkletAnimation interface: attribute animatorName
assert_own_property: self does not have own property "WorkletAnimation" expected property "WorkletAnimation" missing
[FAIL] WorkletAnimation must be primary interface of new WorkletAnimation("name")
assert_equals: Unexpected exception when evaluating object expected null but got object "ReferenceError: WorkletAnimation is not defined"
[FAIL] Stringification of new WorkletAnimation("name")
assert_equals: Unexpected exception when evaluating object expected null but got object "ReferenceError: WorkletAnimation is not defined"
[FAIL] WorkletAnimation interface: new WorkletAnimation("name") must inherit property "animatorName" with the proper type
assert_equals: Unexpected exception when evaluating object expected null but got object "ReferenceError: WorkletAnimation is not defined"
[FAIL] CSS namespace: attribute animationWorklet
assert_own_property: CSS does not have property "animationWorklet" expected property "animationWorklet" missing
Harness: the test ran to completion.