[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:172](https://github.com/evoluhq/evolu/blob/dd96d79f1dbe9a49fa12ce8e0aa7d3d0177795ca/packages/common/src/Array.ts#L172)

A readonly array with at least one element.