import type { ComplexAttributeConverter } from 'lit';
export declare const stringAndNumberConverter: ComplexAttributeConverter<string | number | undefined>;
export declare const stringAndBooleanConverter: ComplexAttributeConverter<string | boolean | undefined>;
export declare const numberAndBooleanConverter: ComplexAttributeConverter<number | boolean | undefined>;
export declare const numberAndStringAndBooleanConverter: ComplexAttributeConverter<number | string | boolean | undefined>;