import { InjectionToken } from '@angular/core';
export declare const defaultConfig: Config;
export interface Config {
    dropDownPageMargin?: number;
    dropDownMaxHeight?: number;
}
export declare type optionsConfig = Partial<Config>;
export declare const ConfigService: InjectionToken<Config>;
export declare const CustomConfig: InjectionToken<Config>;
export declare const PredefinedConfig: InjectionToken<Config>;
export declare function configFactory(initConfig: optionsConfig, configValue: optionsConfig | (() => optionsConfig)): optionsConfig;