text: 'use strict';
  
  const hljs = require('highlight.js');
  const languages = hljs.listLanguages();
  const fs = require('fs');
  
  const result = {
    languages: languages,
    aliases: {}
  };
  
  languages.forEach(lang => {
    result.aliases[lang] = lang;
  
    const def = require('highlight.js/lib/languages/' + lang)(hljs);
    const aliases = def.aliases;
  
    if (aliases) {
      aliases.forEach(alias => {
        result.aliases[alias] = lang;
      });
    }
  });
  
  const stream = fs.createWriteStream('highlight_alias.json');
  stream.write(JSON.stringify(result));
  stream.on('end', () => {
    stream.end();
  });
  