import type { IConfigCatClient, SettingTypeOf, SettingValue, IUser } from "@configcat/sdk"; declare function useFeatureFlag(key: string, defaultValue: T, user?: IUser, providerId?: string): { value: SettingTypeOf; loading: boolean; }; declare function useConfigCatClient(providerId?: string): IConfigCatClient; export { useFeatureFlag, useConfigCatClient };