[Home](./index.md) > [@empathyco/x-components](./x-components.md) > [deepFlat](./x-components.deepflat.md) ## deepFlat() function Flat an `Item[]` deeply using the given `childrenKey` to access to his children. **Signature:** ```typescript export declare function deepFlat(array: Item[], childrenKey: Key): Item[]; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | array | Item\[\] | The list of items to flat. Each item may have another list of items of the same type to flat. | | childrenKey | Key | Property name where each of the items of the given array may have another list of items to be flattened. | **Returns:** Item\[\] A flat list with all the found items.