/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: BSD-3-Clause
 */
import type { Config } from '../types/config.js';
import type { Locale } from '../types/locale.js';
import { Formatter } from './index.js';
import { Bundle, Message, ProgramMessage } from '../messages.js';
/**
 * Create an XLIFF formatter from a main config object.
 */
export declare function xliffFactory(config: Config): XliffFormatter;
/**
 * Formatter for XLIFF v1.2
 * https://docs.oasis-open.org/xliff/v1.2/os/xliff-core.html
 */
export declare class XliffFormatter implements Formatter {
    private config;
    private xliffConfig;
    constructor(config: Config);
    /**
     * For each target locale, look for the file "<xliffDir>/<locale>.xlf", and if
     * it exists, parse out translations.
     */
    readTranslations(): Bundle[];
    /**
     * Parse the given XLIFF XML string and return its translations.
     */
    private parseXliff;
    /**
     * Write a "<xliffDir>/<locale>.xlf" file for each target locale. If a message
     * has already been translated, it will have both a <source> and a <target>.
     * Otherwise, it will only have a <source>.
     */
    writeOutput(sourceMessages: ProgramMessage[], translations: Map<Locale, Message[]>): Promise<void>;
    /**
     * Encode the given locale in XLIFF format.
     */
    private encodeLocale;
    /**
     * Encode the given message contents in XLIFF format.
     */
    private encodeContents;
    private createPlaceholder;
    private initNewTargetDocument;
    private readTranslationFile;
    private makeExistingTranslationsMap;
    private getElementByTagName;
    private getNoteElement;
    /**
     * xmldom does not implement replaceChildren.
     */
    private clearElement;
    /**
     * Append childNode to parentNode, try to preserve some
     * whitespace / indentation for common scenarios.
     */
    private appendChild;
    private removeChildAndPrecedingText;
    private createIndentFunction;
}