[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [arrayNormalizeEmptyToUndefined](./rc-js-util.arraynormalizeemptytoundefined.md) ## arrayNormalizeEmptyToUndefined() function Replaces length 0 `ArrayLike` with `undefined`. **Signature:** ```typescript export declare function arrayNormalizeEmptyToUndefined>(array: TArray | null | undefined): TArray | undefined; ``` ## Parameters

Parameter	Type	Description
array	TArray \| null \| undefined

**Returns:** TArray \| undefined `array` if it's an `ArrayLike` of length greater than 0, otherwise `undefined`. ## Remarks See [arrayNormalizeEmptyToUndefined()](./rc-js-util.arraynormalizeemptytoundefined.md).