# DeepKeys

# Type Alias: DeepKeys\<T, TDepth\>

```ts
type DeepKeys<T, TDepth> = TDepth["length"] extends 5 ? never : unknown extends T ? string : T extends ReadonlyArray<any> & IsTuple<T> ? 
  | AllowedIndexes<T>
  | DeepKeysPrefix<T, AllowedIndexes<T>, TDepth> : T extends any[] ? DeepKeys<T[number], [...TDepth, any]> : T extends Date ? never : T extends object ? keyof T & string | DeepKeysPrefix<T, keyof T, TDepth> : never;
```

Defined in: [types/type-utils.ts:46](https://github.com/TanStack/table/blob/main/packages/table-core/src/types/type-utils.ts#L46)

## Type Parameters

### T

`T`

### TDepth

`TDepth` *extends* `any`[] = \[\]