# `QueryDslDateDecayFunction` [alias-QueryDslDateDecayFunction]
```typescript
type QueryDslDateDecayFunction = [QueryDslDateDecayFunctionKeys](./QueryDslDateDecayFunctionKeys.md) & { [property: string]: [QueryDslDecayPlacement](./QueryDslDecayPlacement.md) | [QueryDslMultiValueMode](./QueryDslMultiValueMode.md);};
```