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# Type Alias RequiredPropertyKeys<S, P>

```typescript
RequiredPropertyKeys: S extends { required: readonly (infer K)[] }
    ? Extract<K, keyof P>
    : never
```

Types: [S](#s), [P](#p)

#### Type Parameters

*   <a id="s"></a>S extends [JsonSchema](core.Supporting_types.JsonSchema.md)
*   <a id="p"></a>P extends Readonly<Record<string, [JsonSchema](core.Supporting_types.JsonSchema.md)\>\>