export declare class BoardComponentDiff {
    refid?: number | null;
    type?: string;
    changeType: 'added' | 'removed' | 'modified';
    changedProps?: string[];
}
export declare class BoardVersionDiff {
    fromVersion: number;
    toVersion?: number | null;
    addedCount: number;
    removedCount: number;
    modifiedCount: number;
    componentDiffs: BoardComponentDiff[];
}