[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Assert](https://evolu.dev/docs/api-reference/common/Assert) › assertEqualBytes

```ts
function assertEqualBytes(
  actual: Uint8Array,
  expected: ArrayLike<number>,
): void;
```

Defined in: [packages/common/src/Assert.ts:1119](https://github.com/evoluhq/evolu/blob/ecbac001e0c18bbc45b44715f49ecc3a768c5ec9/packages/common/src/Assert.ts#L1119)

Asserts that a `Uint8Array` contains the expected bytes.

Uses [eqArrayNumber](https://evolu.dev/docs/api-reference/common/Eq/variables/eqArrayNumber), so the runtime representations may differ. For
example, a `Uint8Array` can be compared directly with a regular array.

### Example

```ts

const bytes = new Uint8Array([1, 5, 39, 254]);

assertEqualBytes(bytes, [1, 5, 39, 254]);
```