Sorting between companies one can work for based on ones qualifications and company's requirements.

companysort.js

const qualifications = ["bike", "driversLicense"]
///There are ten companies labelled A to J.

const jobListings = {
  companyA: ["apartment", "house", "propertyInsurance"],
  companyB: ["5doorCar", "4doorCar", "driversLicense", "carInsurance"],
  companyC: ["socialSecurityNumber", "workPermit"],
  companyD: ["appartment", "house", "flat"],
  companyE: ["driversLicense", "2doorCar", "3doorCar", "4doorCar", "5doorCar"],
  companyF: ["scooter", "bike", "motorcycle", "driversLicense"],
  companyG: ["massageQualification", "liabilityInsurrance"],
  companyH: ["storage", "garage"],
  companyI: [],
  companyJ: ["paypalAccount"]
}

///A function to sort companies
const companySort = (qualifications, jobListings) => {
  let eligible = [];
  let notEligible = [];
  for (let company in jobListings) {
    const check = (qualification) => jobListings[company].includes(qualification);
    qualifications.some(check);
    if (qualifications.some(check)) {
      eligible.push(company);
    } else if (jobListings[company].length == 0) {
      eligible.push(company);
    } else {
      notEligible.push(company);
    }
  }
  return {
    "eligible": `You can work for the following companies: ${eligible}`,
    "notEligible": `But you can't work for the following: ${notEligible}`
  }
}


//Run the array
// companySort(qualifications,jobListings);