import EnvExtension from './env-extension';
import { EnvExtensionProps, EnvExtensionOptions, EnvExtensionModel } from './env-extension-types';
export declare type TesterExtensionOptions = EnvExtensionOptions;
export declare type TesterExtensionModel = EnvExtensionModel;
export default class TesterExtension extends EnvExtension {
    constructor(extensionProps: EnvExtensionProps);
    toModelObject(): TesterExtensionModel;
}