Type Members

1.  final case class Interaction(id: Int, name: String, timestamp: Double) extends Product with Serializable
2.  final case class OnRenderData(id: String, phase: String, actualDurationMs: Double, baseDurationMs: Double, startTime: Double, commitTime: Double, rawInteractions: Iterable[raw.Interaction]) extends Product with Serializable

   Data returned by the Profiler.

   Data returned by the Profiler.

   id

   The id prop of the Profiler tree that has just committed. This can be used to identify which part of the tree was committed if you are using multiple profilers.

   phase

   Identifies whether the tree has just been mounted for the first time or re-rendered due to a change in props, state, or hooks.

   actualDurationMs

   Time spent rendering the Profiler and its descendants for the current update. This indicates how well the subtree makes use of memoization (e.g. React.memo, useMemo, shouldComponentUpdate). Ideally this value should decrease significantly after the initial mount as many of the descendants will only need to re-render if their specific props change.

   baseDurationMs

   Duration of the most recent render time for each individual component within the Profiler tree. This value estimates a worst-case cost of rendering (e.g. the initial mount or a tree with no memoization).

   startTime

   Timestamp when React began rendering the current update.

   commitTime

   Timestamp when React committed the current update. This value is shared between all profilers in a commit, enabling them to be grouped if desirable.