/** Keep `prev`'s reference when it's element-equal to `next`, so a nanostores
 *  `computed` (notifies on `!==`) skips the emit when its projected list didn't
 *  actually change — e.g. status-id sets recomputed on every stream delta.
 *  `next` is frozen: the ref is shared across ticks, so an in-place mutation
 *  would corrupt the cache — fail loud instead. */
export const stableArray = <T>(prev: readonly T[], next: T[]): readonly T[] =>
  prev.length === next.length && prev.every((v, i) => v === next[i]) ? prev : Object.freeze(next)