[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) › NonEmptyReadonlyArray

```ts
type NonEmptyReadonlyArray<T> = readonly [T, ...ReadonlyArray<T>];
```

Defined in: [packages/common/src/Array.ts:146](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Array.ts#L146)

A readonly array with at least one element.