interface UiSettingsProps {
    theme: string | null;
    language: string | null;
    compactMode: boolean;
    sidebarCollapsed: boolean;
    itemsPerPage: number;
}
export declare abstract class UiSettingsBase {
    protected props: UiSettingsProps;
    protected constructor(props: UiSettingsProps);
    get theme(): string | null;
    get language(): string | null;
    get compactMode(): boolean;
    get sidebarCollapsed(): boolean;
    get itemsPerPage(): number;
    /**
     * Create default UI settings
     */
    static createDefault(): UiSettingsBase;
    /**
     * Create UI settings with custom values
     * @param props - object (optional)
     */
    static create(props: any | null): UiSettingsBase;
    protected validate(): void;
}
export {};
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