type JsonExportable = number | string | boolean | null | JsonExportable[] | {
    [key: string]: JsonExportable;
};
declare function provide_ctor_defaults<T extends new (...args: any[]) => any>(cls: T): Record<keyof ConstructorParameters<T>, any>;
declare function assign_attr_with_json(obj: any, attrs: string[], json_data: Record<string, any>): void;
declare function export_attr_to_json(obj: any, attrs: string[]): Record<string, JsonExportable>;
declare function getDynamicRanges(text: string | any[], keywords: any[]): number[][];
export declare function deepCopy(data: any): any;
export { JsonExportable, provide_ctor_defaults, assign_attr_with_json, export_attr_to_json, getDynamicRanges };