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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /event-timing/supported-types.window.html - WPT Dashboard Interop Dashboard
test(() => {
assert_implements(window.PerformanceEventTiming, 'Event Timing is not supported.');
assert_implements(typeof PerformanceObserver.supportedEntryTypes !== "undefined",
'supportedEntryTypes is not supported');
const types = PerformanceObserver.supportedEntryTypes;
assert_true(types.includes("first-input"),
"There should be 'first-input' in PerformanceObserver.supportedEntryTypes");
assert_true(types.includes("event"),
"There should be 'event' in PerformanceObserver.supportedEntryTypes");
assert_greater_than(types.indexOf("first-input"), types.indexOf('event'),
"The 'first-input' entry should appear after the 'event' entry");
}, "supportedEntryTypes contains 'event' and 'first-input'.");