Function finalizeTiming

apps/sim/providers/streaming-execution.ts:177–196

* Overwrites the placeholder timing with the drain timestamp. For the simple * path the first time segment is also finalized; for the accumulated path only * the top-level aggregate is touched (segments are pre-finalized by the loop).

(
  output: NormalizedBlockOutput,
  providerStartTime: number,
  kind: StreamingTiming['kind']
)

 * the top-level aggregate is touched (segments are pre-finalized by the loop).
 */
function finalizeTiming(
  output: NormalizedBlockOutput,
  providerStartTime: number,
  kind: StreamingTiming['kind']
): void {
  const streamEndTime = Date.now()
  const providerTiming = output.providerTiming
  if (!providerTiming) return

  providerTiming.endTime = new Date(streamEndTime).toISOString()
  providerTiming.duration = streamEndTime - providerStartTime

  if (kind === 'simple') {
    const segment = providerTiming.timeSegments?.[0]
    if (segment) {
      segment.endTime = streamEndTime
      segment.duration = streamEndTime - providerStartTime
    }
  }
}