Function analyzeRerenders

cli/src/__tests__/test-utils.ts:226–256

(entries: RerenderLogEntry[])

 * Analyze re-render logs and return aggregated statistics
 */
export function analyzeRerenders(entries: RerenderLogEntry[]): RerenderAnalysis {
  const rerendersByMessage = new Map<string, number>()
  const propChangeFrequency = new Map<string, number>()

  for (const entry of entries) {
    // Count re-renders per message
    const currentCount = rerendersByMessage.get(entry.messageId) || 0
    rerendersByMessage.set(entry.messageId, currentCount + 1)

    // Count how often each prop changes
    for (const prop of entry.changedProps) {
      const propCount = propChangeFrequency.get(prop) || 0
      propChangeFrequency.set(prop, propCount + 1)
    }
  }

  // Find max re-renders for any single message
  let maxRerenderPerMessage = 0
  for (const count of rerendersByMessage.values()) {
    if (count > maxRerenderPerMessage) {
      maxRerenderPerMessage = count
    }
  }

  return {
    totalRerenders: entries.length,
    rerendersByMessage,
    propChangeFrequency,
    maxRerenderPerMessage,
  }
}

/**
 * Clear the CLI debug log file