export type StatePath = readonly (string | number)[];
export interface StatePatch {
    readonly op: 'set' | 'delete';
    readonly path: StatePath;
    readonly value?: unknown;
    readonly previous?: unknown;
}
export interface DraftSession<State> {
    readonly draft: State;
    materialize<Value>(value: Value): Value;
    finish(): {
        state: State;
        patches: StatePatch[];
        inversePatches: StatePatch[];
    };
    discard(): void;
}
export declare function beginDraft<State>(base: State): DraftSession<State>;
export declare function applyStatePatches<State>(state: State, patches: readonly StatePatch[]): State;
//# sourceMappingURL=patches.d.ts.map