mobileCarriersMapper.ts

console.clear();

const carrierArray = [
    "T-Mobile - 3G *(US)*",
    "T-Mobile - 4G *(US)*",
    "Verizon Wireless - 3G *(US)*",
    "Verizon Wireless - 4G *(US)*",
    "Sprint - 3G *(US)*",
    "Sprint - 4G *(US)*",
    "AT&T - 3G *(US)*",
    "AT&T - 4G *(US)*",
    "Bell - 3G *(CA)*",
    "Bell - 4G *(CA)*",
    "Rogers - 3G *(CA)*",
    "Rogers - 4G *(CA)*",
    "Telus - 3G *(CA)*",
    "Telus - 4G *(CA)*",
    "Freedom Mobile - 3G *(CA)*",
    "Freedom Mobile - 4G *(CA)*",
    "Vodafone - 3G *(UK)*  & *(IE)*",
    "Vodafone - 4G *(UK)*  & *(IE)*",
    "Three - 3G *(UK)* & *(IE)*",
    "Three - 4G *(UK)* & *(IE)*",
    "O2 - 3G *(UK)* & *(IE)*",
    "O2 - 4G *(UK)* & *(IE)*",
    "EE - 3G *(UK)* & *(IE)*",
    "EE - 4G *(UK)* & *(IE)*",
    "Deutsche Telekom - 3G *(DE)*",
    "Deutsche Telekom - 4G *(DE)*",
    "Vodafone - 3G *(DE)*",
    "Vodafone - 4G *(DE)*",
    "O2 (Telefónica) -3G *(DE)*",
    "O2 (Telefónica) - 4G *(DE)*",
    "Orange - 3G *(FR)*",
    "Orange - 4G *(FR)*",
    "SFR - 3G *(FR)*",
    "SFR - 4G *(FR)*",
    "Bouygues - 3G *(FR)*",
    "Bouygues - 4G *(FR)*",
    "Free - 3G *(FR)*",
    "Free - 4G *(FR)*",
];

const countryArray = [
    "US",
    "CA",
    "UK",
    "IE",
    "DE",
    "FR",
] as const;

const countryCodeToNameMapping = {
    "US": "United States",
    "CA": "Canada",
    "UK": "United Kingdom",
    "IE": "Ireland",
    "DE": "Germany",
    "FR": "France",
}

let carriersList: any = {};

for (let country of countryArray) {
    const matchedCarriers = carrierArray
        .filter(c => c.includes(`*(${country})*`))
        .map(c => c.replace(/\*.*/, '').trim());
    const countryName = countryCodeToNameMapping[country];
    carriersList[countryName] = matchedCarriers;
}

console.log(carriersList);