rc-js-util/docs/rc-js-util.arraynormalizeemptytoundefined.md

A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.

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## arrayNormalizeEmptyToUndefined() function

Replaces length 0 `ArrayLike` with `undefined`<!-- -->.

**Signature:**

```typescript
export declare function arrayNormalizeEmptyToUndefined<TArray extends ArrayLike<unknown>>(array: TArray | null | undefined): TArray | undefined;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

array


</td><td>

TArray \| null \| undefined


</td><td>


</td></tr>
</tbody></table>
**Returns:**

TArray \| undefined

`array` if it's an `ArrayLike` of length greater than 0, otherwise `undefined`<!-- -->.

## Remarks

See [arrayNormalizeEmptyToUndefined()](./rc-js-util.arraynormalizeemptytoundefined.md)<!-- -->.