import { type Patch, type Producer } from "immer";
export type PatchHandler = (patches: Patch[]) => void;
export type PatchHandlerWithVersion = (patches: Patch[], version: number) => void;
export declare class PatchedStateManager<TState> {
    private _state;
    private _patchHandlers;
    constructor(initialState?: TState);
    /**
     * Subscribe to state patches/updates.
     * @param handler - Function called with an array of state patches
     * @returns Unsubscribe function
     */
    onPatch(handler: PatchHandler): () => void;
    /**
     * Update the state using an Immer producer function.
     * Notifies all subscribed patch handlers with the generated patches.
     * @param producer - Immer producer function to modify the state
     * @returns The updated state
     */
    updateState(producer: Producer<TState>): Readonly<TState>;
    get state(): Readonly<TState>;
}
export type { Patch } from "immer";
//# sourceMappingURL=state-patcher.d.ts.map