import { InitialState } from './state-adapt.types';
export interface InitialStateGetter<State> {
    (): State;
    /** Starts memoization */
    activate(): State;
    /** Stops memoization */
    deactivate(): void;
}
/**
  Normalizes an {@link InitialState} argument into a function that returns the initial state.

  {@link InitialStateGetter.activate} captures a value that stays stable until
  {@link InitialStateGetter.deactivate}.

  Outside of an activation there is no session for a value to belong to, so each call is an
  independent, up-to-the-moment read rather than a cached one.
 */
export declare function createInitialStateGetter<State>(initialState: InitialState<State>): InitialStateGetter<State>;