---
title: "DeepRequired"
description: "Recursive variant of TypeScript's `Required<T>` - strips `?` from every property at every depth."
package: "@maz-ui/utils"
url: "https://maz-ui.com/ecosystem/utils/types/deep-required"
---

# DeepRequired

> Recursive variant of TypeScript's `Required<T>` - strips `?` from every property at every depth.

- Package: `@maz-ui/utils`
- Import: `import type { DeepRequired } from '@maz-ui/utils/ts-helpers/DeepRequired'`
- Web: https://maz-ui.com/ecosystem/utils/types/deep-required

The mirror image of [`DeepPartial`](./deep-partial.md). Useful when you want a fully-resolved internal type derived from a public options interface.

## Usage

```ts
import type { DeepRequired } from '@maz-ui/utils'

interface Options {
  cache?: {
    ttl?: number
    strategy?: 'memory' | 'disk'
  }
}

type ResolvedOptions = DeepRequired<Options>
// {
//   cache: {
//     ttl: number
//     strategy: 'memory' | 'disk'
//   }
// }
```

## API

```ts
type DeepRequired<T> = Required<{
  [K in keyof T]: T[K] extends Required<T[K]> ? T[K] : DeepRequired<T[K]>
}>
```