import { ScopedModel } from '../create-model';
import { Compare } from '../utils/comparer';
export declare type SelectorFn<T, R> = (model: Readonly<T>) => R;
/**
 * Transforms the model's state and listens for the returned value change.
 *
 * If the value changes, the component re-renders.
 *
 * uses the `Object.is` function for comparison by default.
 *
 * @param model the scoped model to read the state from
 * @param selector a function that receives the model state
 * and transforms it into a new value.
 * @param shouldUpdate a function that compares the
 * previously transformed value to the newly transformed value
 * and if it should replace the previous value and perform an update.
 */
export default function useSelector<S, P, R>(model: ScopedModel<S, P>, selector: SelectorFn<S, R>, shouldUpdate?: Compare<R>): R;