text: import { NotImplementedError } from '../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'
   *
   */
  export default function createDreamTeam( members ) {
    if (!Array.isArray(members))
    return false
    return members
    .filter(x => typeof x === 'string')
    .map(x => x.trim())
    .map(x => x[0].toUpperCase())
    .sort()
    .join('')
  }
  