coderef

Deprecation reportsLimited availability

Deprecation reporting sends a report to a URL nominated by the Reporting-Endpoints header or the ReportingObserver API when a page uses a deprecated API or other browser feature.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–68Not supported
69+Supportedsince Sep 4, 2018
Current: 155
Edge
12–18Not supported
79+Supportedsince Jan 15, 2020
Current: 154
Firefox
✕Not supportedup to 157
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
18–68Not supported
69+Supportedsince Sep 4, 2018
Current: 155
Firefox Android
✕Not supportedup to 157
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN: DeprecationReport.

Feature detection

JS · check before using
if ("ReportingObserver" in globalThis && "ReportingObserver" in ReportingObserver.prototype) {
  // ReportingObserver.ReportingObserver is available
}

Documentation (MDN)

Specification