import { type UnwrapNestedRefs } from 'vue';
export type NewState<T> = Partial<T> | ((e: UnwrapNestedRefs<T>) => Partial<T>);
export declare function useState<T extends Object>(props: T): import("vue").ToRefs<import("vue").Reactive<T>> & {
    state: import("vue").Reactive<T>;
    setState: (newState: NewState<T>, handler?: (e: import("vue").Reactive<T>) => void) => Promise<UnwrapNestedRefs<T>>;
};