source/library/state/history-logic.ts


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/*** EXPORT ------------------------------------------- ***/

export type HistoryEvictable = {
  favorite: boolean;
  timestamp: number;
};

export function evict<T extends HistoryEvictable>(entries: T[], max: number): T[] {
  if (entries.length <= max)
    return entries;

  const favorites = entries.filter((e) => e.favorite);
  const regular = entries.filter((e) => !e.favorite);
  const keepRegular = regular.slice(0, Math.max(0, max - favorites.length));

  return [...favorites, ...keepRegular].sort((a, b) => b.timestamp - a.timestamp);
}