import { IcosTreeModelData } from './tree-props';
export declare const notEmptyArray: (arr?: any) => boolean;
export declare const makeRandomID: () => string;
export interface ModelStandardInit {
    initDepth: number;
    defaultExpandAll: boolean;
    defaultExpandedKeys: Array<string | number>;
    defaultCheckedKeys: Array<string | number>;
}
export declare class ModelStandard {
    private init;
    static LoopRemoveChecked(models: IcosTreeModelData[]): void;
    static DeepUpdateExpanded(id: string | number, models: IcosTreeModelData[], accordion: boolean): IcosTreeModelData[];
    static DeepUpdateChecked(id: string | number, models: IcosTreeModelData[]): IcosTreeModelData[];
    static SetChildrenChecked(models: IcosTreeModelData[], checked: boolean): void;
    static FindAllChecked(models: IcosTreeModelData[]): string[];
    constructor(init: ModelStandardInit);
    filterModel(models: IcosTreeModelData[]): IcosTreeModelData[];
    private updateDepthIdent;
    private isExpanded;
    private isChecked;
}