text: /**
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */
  
  const CWD = process.cwd();
  const fs = require('fs-extra');
  const path = require('path');
  const chalk = require('chalk');
  
  const siteConfig = require(`${CWD}/siteConfig.js`);
  
  const join = path.join;
  
  const languagesFile = join(CWD, 'languages.js');
  const versionsJSONFile = join(CWD, 'versions.json');
  const versionsFile = join(CWD, 'pages/en/versions.js');
  
  class Translation {
    constructor() {
      this.enabled = false;
      this.languages = [
        {
          enabled: true,
          name: 'English',
          tag: 'en',
        },
      ];
  
      this.load();
    }
  
    enabledLanguages = () => this.languages.filter((lang) => lang.enabled);
  
    load() {
      if (fs.existsSync(languagesFile)) {
        this.enabled = true;
        this.languages = require(languagesFile);
      }
    }
  }
  
  class Versioning {
    constructor() {
      this.enabled = false;
      this.latestVersion = null;
      this.defaultVersion = null;
      this.versions = [];
      this.missingVersionsPage = false;
  
      this.load();
    }
  
    printMissingVersionsPageError() {
      console.error(
        `${chalk.yellow('No versions.js file found!')}` +
          `\nYou should create your versions.js file in pages/en directory.` +
          `\nPlease refer to https://v1.docusaurus.io/docs/en/versioning.html.`,
      );
    }
  
    load() {
      if (fs.existsSync(versionsJSONFile)) {
        this.enabled = true;
        this.versions = JSON.parse(fs.readFileSync(versionsJSONFile, 'utf8'));
        this.latestVersion = this.versions[0];
        this.defaultVersion = siteConfig.defaultVersionShown
          ? siteConfig.defaultVersionShown
          : this.latestVersion; // otherwise show the latest version (other than next/master)
      }
  
      if (!fs.existsSync(versionsFile)) {
        this.missingVersionsPage = true;
      }
    }
  }
  
  const env = {
    translation: new Translation(),
    versioning: new Versioning(),
  };
  
  module.exports = env;
  