Function mergeLeaderboardEntries

mergeLeaderboardEntries(
    existing: Record<string, TiltifyLeaderboardEntry[]>,
    incoming: Record<string, TiltifyLeaderboardEntry[]> | undefined,
    authoritative?: boolean,
): Record<string, TiltifyLeaderboardEntry[]>
Accumulates leaderboard entries across ticks, keyed by campaign ID then entry ID.
Parameters
- existing: Record<string, TiltifyLeaderboardEntry[]>
  Current per-campaign leaderboard map.
- incoming: Record<string, TiltifyLeaderboardEntry[]> | undefined
  Fresh per-campaign leaderboard map (may be undefined).
- authoritative: boolean = false
  When true, replace the named campaigns wholesale instead of merging. Defaults to false.
Returns Record<string, TiltifyLeaderboardEntry[]>
Merged map with entries preserved across ticks.
- Defined in realtime-pipeline/src/reducer/tiltifyData.ts:193