import { Logger } from '@nestjs/common';
import { I18nLoader } from '../loaders';
import { IfAnyOrNever, Path, PathValue } from '../types';
import { I18nOptions, I18nTranslation, I18nValidationError, I18nTranslator } from '../interfaces';
export type TranslateOptions = {
    lang?: string;
    args?: ({
        [k: string]: any;
    } | string)[] | {
        [k: string]: any;
    };
    defaultValue?: string;
    debug?: boolean;
};
export declare class I18nService<K = Record<string, unknown>> implements I18nTranslator<K> {
    protected readonly i18nOptions: I18nOptions;
    protected translations: I18nTranslation;
    protected supportedLanguages: string[];
    private readonly logger;
    private readonly loaders;
    private pluralRules;
    constructor(i18nOptions: I18nOptions, translations: I18nTranslation, supportedLanguages: string[], logger: Logger, loaders: I18nLoader<unknown>[]);
    translate<P extends Path<K> = any, R = PathValue<K, P>>(key: P, options?: TranslateOptions): IfAnyOrNever<R, string, R>;
    t<P extends Path<K> = any, R = PathValue<K, P>>(key: P, options?: TranslateOptions): IfAnyOrNever<R, string, R>;
    getSupportedLanguages(): string[];
    getTranslations(): I18nTranslation;
    refresh(): Promise<void>;
    hbsHelper: <P extends Path<K> = any>(key: P, args: any, options: any) => IfAnyOrNever<PathValue<K, P>, string, PathValue<K, P>>;
    resolveLanguage(lang: string): string;
    validate(value: any, options?: TranslateOptions): Promise<I18nValidationError[]>;
    private getFallbackLanguage;
    private translateObject;
    private getPluralObject;
    private getNestedTranslations;
}