import { OnModuleDestroy } from '@nestjs/common';
import { Observable } from 'rxjs';
import { I18nLoader, I18nTranslation } from 'nestjs-i18n';
export interface I18nJsonParserOptions {
    paths: string[];
    filePattern?: string;
    watch?: boolean;
}
export declare class I18nJsonParser extends I18nLoader implements OnModuleDestroy {
    private options;
    private watcher?;
    private events;
    constructor(options: I18nJsonParserOptions);
    onModuleDestroy(): Promise<void>;
    languages(): Promise<string[] | Observable<string[]>>;
    private aggregateLanguages;
    load(): Promise<I18nTranslation | Observable<I18nTranslation>>;
    private parseTranslations;
    private parseLanguages;
    private sanitizeOptions;
}
export declare const getDirectories: (source: string) => Promise<string[]>;
export declare function filterAsync<T>(array: T[], callbackfn: (value: T, index: number, array: T[]) => Promise<boolean>): Promise<T[]>;
export declare function mapAsync<T, U>(array: T[], callbackfn: (value: T, index: number, array: T[]) => Promise<U>): Promise<U[]>;
export declare const isDirectory: (source: string) => Promise<boolean>;
export declare const getFiles: (dirPath: string, pattern: RegExp) => Promise<string[]>;