import { ExecutionContext } from '@nestjs/common';
import { ModuleRef } from '@nestjs/core';
import { I18nService } from 'nestjs-i18n';
import { LanguageKeyMap, TranslateOptions } from '../types/index.js';
import { Request } from 'express';
export declare class TranslationService {
    private i18nService;
    private moduleRef;
    static instance: TranslationService;
    private clsResolvers;
    private i18nOptions;
    private defaultLanguageKey;
    private priorityLanguageGetter;
    constructor(i18nService: I18nService<Record<string, string>>, moduleRef: ModuleRef);
    translate(key: string, options?: TranslateOptions): string;
    getDefaultLanguageKey(): string;
    getCurrentLanguage(): string;
    getDefaultLanguage(): string;
    getLanguageByKey(key: string): string | undefined;
    resolverLanguageFromRequest(request: ExecutionContext | Request): LanguageKeyMap;
}