InProgressPerformanceEvent type

type InProgressPerformanceEvent = {
  add: (fields: { [key: string]: {} | undefined }) => void
  discard: () => void
  end: (
    event?: Partial<PerformanceEvent>,
    error?: unknown
  ) => PerformanceEvent | null
  event: PerformanceEvent
  increment: (fields: { [key: string]: number | undefined }) => void
  measurement: IPerformanceMeasurement
}