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

```ts
function appendToArray<T>(array: readonly T[], item: T): readonly [T, T];
```

Defined in: [packages/common/src/Array.ts:277](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Array.ts#L277)

Appends an item to an array, returning a new non-empty readonly array.

### Example

```ts
appendToArray([1, 2, 3], 4); // [1, 2, 3, 4]
```