How to use the @ckeditor/ckeditor5-dev-utils.translations function in @ckeditor/ckeditor5-dev-utils

/**
 * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md.
 */

'use strict';

const del = require( 'del' );
const glob = require( 'glob' );
const fs = require( 'fs-extra' );
const path = require( 'path' );
const logger = require( '@ckeditor/ckeditor5-dev-utils' ).logger();
const { findOriginalStrings } = require( '@ckeditor/ckeditor5-dev-utils' ).translations;

const langContextSuffix = path.join( 'lang', 'contexts.json' );
const corePackageName = 'ckeditor5-core';

const utils = {
	/**
	 * Collect translations and return array of translations.
	 *
	 * @returns {Array.}
	 */
	collectTranslations() {
		const srcPaths = [ process.cwd(), 'packages', '*', 'src', '**', '*.js' ].join( '/' );

		const files = glob.sync( srcPaths )
			.filter( srcPath => !srcPath.match( /packages\/[^/]+\/src\/lib\// ) );

/**
 * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md.
 */

'use strict';

const path = require( 'path' );
const {	TranslationService } = require( '@ckeditor/ckeditor5-dev-utils' ).translations;

/**
 * Replaces all function call parameters with translated strings for the t function.
 *
 * @param {Object} compiler Webpack compiler.
 * @param {String} language Language code, e.g en_US.
 */
module.exports = function replaceTCalls( compiler, language ) {
	const translationService = new TranslationService( language );

	compiler.options.translateSource = source => translationService.translateSource( source );

	// Adds ckeditor5-core translations before translate-source-loader starts translating.
	compiler.plugin( 'after-resolvers', () => {
		compiler.resolvers.normal.resolve(
			process.cwd(),

/**
 * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md.
 */

'use strict';

const request = require( 'request' );
// In case of debugging requests install and enable following package
// and remove `createJsonResponseHandler` callback from the request arguments.
// See https://github.com/request/request-debug.
// require( 'request-debug' )( request );

const { retryAsyncFunction } = require( '@ckeditor/ckeditor5-dev-utils' ).translations;

const PROJECT_URL = 'https://www.transifex.com/api/2/project/ckeditor5';

/**
 * Promise wrappers of the Transifex API.
 *
 * @see https://docs.transifex.com/api/ for API documentation.
 */
module.exports = {
	/**
	 * Downloads available resources.
	 *
	 * @param {Object} config
	 * @param {String} config.token Token to the Transifex API.
	 * @returns {Promise.}
	 */

/**
 * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md.
 */

'use strict';

const fs = require( 'fs-extra' );
const path = require( 'path' );
const transifexService = require( './transifex-service' );
const logger = require( '@ckeditor/ckeditor5-dev-utils' ).logger();
const { cleanPoFileContent, createDictionaryFromPoFileContent } = require( '@ckeditor/ckeditor5-dev-utils' ).translations;

/**
 * Downloads translations from the Transifex for each package and language.
 *
 * @param {Object} loginConfig
 * @param {String} loginConfig.token Token to the Transifex API.
 */
module.exports = function download( loginConfig ) {
	return Promise.resolve()
		.then( () => getPackageNames( loginConfig ) )
		.then( packageNames => downloadAndReplaceTranslations( loginConfig, packageNames ) )
		.then( () => {
			logger.info( 'Saved all translations.' );
		} )
		.catch( err => {
			logger.error( err );