text: const { NotImplementedError } = require('../extensions/index.js');
  
  /**
   * Create name of dream team based on the names of its members
   *  
   * @param {Array} members names of the members 
   * @return {String | Boolean} name of the team or false
   * in case of incorrect members
   *
   * @example
   * 
   * createDreamTeam(['Matt', 'Ann', 'Dmitry', 'Max']) => 'ADMM'
   * createDreamTeam(['Olivia', 1111, 'Lily', 'Oscar', true, null]) => 'LOO'
   *
   */
  function createDreamTeam(members) {
    if (!Array.isArray(members)) {
      return false
    }
    return members.filter(el => typeof (el) === 'string')
      .map(name => name.trim())
      .map(name => name[0].toUpperCase())
      .sort()
      .join('')
      
  }
  
  module.exports = {
    createDreamTeam
  };
  