import { type JSONCompatible } from '../../utils';
/**
 * Astro hook, for React islands. Returns `urlState`, `setState`, and `setUrl` functions
 *
 * Astro has no client-side router by default, so the URL is written with
 * `window.history` and read back on back/forward, on this hook's own writes,
 * and on any other `pushState`/`replaceState`, `<ClientRouter />` included.
 * Islands on one page share the state.
 *
 * @param {JSONCompatible<T>} [defaultState] Fallback (default) values for state
 * @param {Object} params - Object with other parameters
 * @param {boolean} params.replace replace URL or push, default `true`
 * @param {?object} params.searchParams `Object.fromEntries(Astro.url.searchParams)`, passed as an island prop so the server render matches the URL
 * @returns {Object} [result] State and callbacks
 * @returns {Object} [result.urlState] - current state object
 * @returns {Function} [result.setUrl] - function to update state and url
 * @returns {Function} [result.setState] - function to update state only
 * @returns {Function} [result.reset] - function to reset state and url to default
 *
 * * Example:
 * ```ts
 * export const form = { name: '', age: 0 };
 * // island: <Form client:load searchParams={Object.fromEntries(Astro.url.searchParams)} />
 * const { urlState, setState, setUrl, reset } = useUrlState(form, { searchParams });
 *
 * setState({ name: 'test' });
 * setUrl({ name: 'test' }, { replace: false });
 * setUrl(curr => ({ ...curr, name: 'test' }));
 * // RESET state and url
 * setUrl((_curr, initialState) => initialState);
 * // Or
 * reset();
 * reset({ replace: false });
 *  ```
 *
 *  * Docs {@link https://github.com/asmyshlyaev177/state-in-url/tree/master/packages/urlstate/astro/useUrlState}
 */
export declare function useUrlState<T extends JSONCompatible>(defaultState: T, params?: Params): {
    /**
     * State object. Don't mutate directly, use `setState` or `setUrl`
     */
    urlState: T;
    /**
     * * Example:
     * ```ts
     * setState({ name: 'test' });
     * // or
     * setState(curr => ({ ...curr, name: 'test' }) );
     *  ```
     *
     *  * Docs {@link https://github.com/asmyshlyaev177/state-in-url/tree/master/packages/urlstate/astro/useUrlState#setstate}
     */
    setState: (value: Partial<T> | ((currState: T, initial: T) => T)) => void;
    /**
     * * Example:
     * ```ts
     * setUrl({ name: 'test' });
     * // or
     * setUrl((curr) => ({ ...curr, name: 'test' }), { replace: false } );
     *  * Reset
     *  setUrl((_curr, initialState) => initialState, { replace: false } );
     *  ```
     *
     *  * Docs {@link https://github.com/asmyshlyaev177/state-in-url/tree/master/packages/urlstate/astro/useUrlState#seturl}
     */
    setUrl: (value?: Partial<T> | ((currState: T, initialState: T) => T), options?: Options) => void;
    /**
     * * Example:
     * ```ts
     * reset();
     * // or
     * reset({ replace: false })
     *  ```
     *
     *  * Docs {@link https://github.com/asmyshlyaev177/state-in-url/tree/master/packages/urlstate/astro/useUrlState#reset}
     */
    reset: (options?: Options) => void;
};
export type Options = {
    replace?: boolean;
};
export type Params = {
    searchParams?: object;
    replace?: boolean;
};