services.js

  /**
   * Check if there user with specified name on github
   * @public
   * @function
   * @param  {String}  login Github login
   * @return {Promise}       Promise wich will resolve with object,
   * containing fiels: success and payload
   */
  static async checkGithub(login) {
    const response = await fetch(`${config.servicesURL}/github/check/${login}`);
    const json = await response.json();
    return json;
  }