Function merge

packages/app/src/context/server-session.ts:95–99

(a: readonly T[], b: readonly T[])

}

function merge<T extends { id: string }>(a: readonly T[], b: readonly T[]) {
  const items = new Map(a.map((item) => [item.id, item] as const))
  for (const item of b) items.set(item.id, item)
  return [...items.values()].sort((x, y) => cmp(x.id, y.id))
}

function reconcileFetched<T extends { id: string }>(
  fetched: T[],