type MaybePromise<T> = T | Promise<T>;
/**
 * Creates a reactive watcher that runs a provided function whenever the dependencies change.
 *
 * @param depsFn - A function that returns the dependencies to watch. The function is called to track dependencies.
 * @returns A function that takes an effect function `fn`, which will be executed when the dependencies change.
 *
 * @example
 * const stop = watch(() => state)(() => {
 *   // Effect logic here
 * });
 *
 * @remarks
 * The effect function can optionally return a cleanup function, which will be called before the effect re-runs.
 */
export declare const watch: {
    (depsFn: () => unknown): (fn: () => MaybePromise<void> | MaybePromise<() => void>) => void;
    pre(depsFn: () => unknown): (fn: () => MaybePromise<void> | MaybePromise<() => void>) => void;
};
export {};