[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Storage](https://evolu.dev/docs/api-reference/common/local-first/Storage) › RangeUpperBound

```ts
type RangeUpperBound = TimestampBytes | InfiniteUpperBound;
```

Defined in: [packages/common/src/local-first/Storage.ts:202](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/local-first/Storage.ts#L202)

Union type for Range's upperBound: either a [TimestampBytes](https://evolu.dev/docs/api-reference/common/local-first/Timestamp/variables/TimestampBytes) or
[InfiniteUpperBound](https://evolu.dev/docs/api-reference/common/local-first/Storage/variables/InfiniteUpperBound).