interface DiffOptions {
    /** First snapshot path (the "before" state). */
    snapshotA: string;
    /** Second snapshot path (the "after" state). */
    snapshotB: string;
    /** Output format: 'text' (default) or 'json'. */
    format?: 'text' | 'json';
}
/**
 * Minimal subset of KernelState used by this command.
 * The actual KernelState (from @lapidist/dsr) is a structural superset.
 */
interface SnapshotState {
    tokenGraph: {
        tokens: ReadonlyMap<string, unknown>;
    };
    ruleRegistry: {
        rules: ReadonlyMap<string, unknown>;
    };
    componentRegistry: {
        components: ReadonlyMap<string, unknown>;
    };
    entropyState: {
        current: {
            overall: number;
        };
    };
}
export type ReadSnapshotFn = (filePath: string) => Promise<{
    state: SnapshotState;
    hash: string;
}>;
/**
 * Compare two DSR binary snapshots and print the diff to stdout.
 *
 * @param options - Diff command options.
 * @param readSnapshot - Optional override for reading snapshots (used in tests).
 */
export declare function diffSnapshots(options: DiffOptions, readSnapshot?: ReadSnapshotFn): Promise<void>;
export {};
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