# Type Alias: FeatureFlags

> 

> **FeatureFlags**: `object`

Defined in: [tanstack-react-query/src/internals/types.ts:171](https://github.com/trpc/trpc/blob/7c907acfd8b31929214792e3b8c2ad7a8ac72563/packages/tanstack-react-query/src/internals/types.ts#L171)

Feature flags for configuring tRPC behavior

## Type declaration

### keyPrefix

> **keyPrefix**: `boolean`

Whether query and mutation keys start with a prefix.

#### See

https://trpc.io/docs/client/tanstack-react-query/usage#keyPrefix