metrics method

Future<Metrics> metrics()

Returns an object containing metrics of the page.

• Timestamp The timestamp when the metrics sample was taken.
• Documents Number of documents in the page.
• Frames Number of frames in the page.
• JSEventListeners Number of events in the page.
• Nodes Number of DOM nodes in the page.
• LayoutCount Total number of full or partial page layout.
• RecalcStyleCount Total number of page style recalculations.
• LayoutDuration Combined durations of all page layouts.
• RecalcStyleDuration Combined duration of all page style recalculations.
• ScriptDuration Combined duration of JavaScript execution.
• TaskDuration Combined duration of all tasks performed by the browser.
• JSHeapUsedSize Used JavaScript heap size.
• JSHeapTotalSize Total JavaScript heap size.

NOTE All timestamps are in monotonic time: monotonically increasing time in seconds since an arbitrary point in the past.

Implementation

Future<Metrics> metrics() async {
  return Metrics.fromBrowser(await devTools.performance.getMetrics());
}