import { DotnetTypes, SpecificTypes } from '@devexpress/analytics-core/analytics-internal';
import { SimpleFormAdapterItems } from '../metadata/_base-metadata';
import { DataSourceParameterTypeValue } from '@devexpress/analytics-core/analytics-data';
export declare function validateGuid(guid: any): boolean;
declare class DashboardParameterTypeValue extends DataSourceParameterTypeValue {
    convertDataSource?: boolean;
    constructor(value: DotnetTypes, defaultValue: unknown, valueConverter: (value: unknown) => unknown, specifics?: SpecificTypes, convertDataSource?: boolean);
}
export declare class ParameterHelper {
    static getInfoPerType(valueType: any): any[];
    static getEditorType(typeString: string): {
        simpleFormAdapterItem: SimpleFormAdapterItems;
        editorOptions: {};
    };
    static getDateDefaultValue(): Date;
    static typeValues: DashboardParameterTypeValue[];
    static getTypeConverter(typeName: string): (val: unknown, defaultValue?: unknown) => unknown;
    private static _getTypeValue;
    private static _tryConvertValue;
    static getDefaultTypeValue(type: string): unknown;
    static convertSingleValue(value: any, type: string, allowNull?: boolean): any;
}
export {};