import { ReactiveController, ReactiveElement } from 'lit';
import { I18nStrings } from '../services/i18n.service.js';
export declare function i18n<T extends ReactiveElement & {
    i18n: any;
}>(config: {
    key: keyof I18nStrings;
}): ClassDecorator;
/**
 * Responsible for managing the internationalization (i18n) of a LitElement
 */
export declare class I18nController<T extends ReactiveElement & {
    i18n: any;
}> implements ReactiveController {
    #private;
    private host;
    private config;
    constructor(host: T, config: {
        key: keyof I18nStrings;
    });
    hostConnected(): void;
    hostUpdated(): void;
}