type Init<T> = T | (() => T);
type UpdateFn<T> = (prev: T) => T;
type Update<T> = T | UpdateFn<T>;
type Setter<T> = (update: Update<T>) => void;
type Result<T> = [T, Setter<T>];
export declare function useProperty<T>(prop: string): Result<T | undefined>;
export declare function useProperty<T>(prop: string, init: Init<T>): Result<T>;
export {};