07. Company Users

function solve(args) {
  const companies = {};

  args.forEach((element) => {
    const [company, emplId] = element.split(' -> ');

    if (!Object.prototype.hasOwnProperty.call(companies, company)) {
      companies[company] = [];
    }

    if (Object.prototype.hasOwnProperty.call(companies, company)) {
      const isFind = companies[company].find((empl) => empl === emplId);
      if (isFind === undefined) {
        companies[company].push(emplId);
      }
    }
  });

  const sortByName = Object.entries(companies).sort((a, b) => a[0].localeCompare(b[0]));

  sortByName.forEach((element) => {
    const [companyName, employeeId] = element;

    console.log(`${companyName} \n-- ${employeeId.join('\n-- ')}`);
  });
}