| id | global-PerformanceLongTaskTiming |
|---|---|
| title | PerformanceLongTaskTiming 🧪 |
import CanaryAPIWarning from './_canary-channel-api-warning.mdx';
The global PerformanceLongTaskTiming class, as defined in Web specifications.
:::warning Partial support
The value for the attribution property is always an empty array.
:::