Check if a country has (or uses) postal codes or not. Zero dependencies. Simple as that.
It's ISO 3166-1 compliant so you can use 2-3 characters/numeric country code or standarized english name. Standarization can be found in ISO OBP.
The package basically checks a list of no-postalcode countries. When checking for a country that is on the list, the returned value will be false. In case of checking for a country that is not included in the list it will return true. For non-compliant values with ISO 3166-1, it will return undefined.
$ npm install has-postalcodeimport hasPostalCode from 'has-postalcode'
hasPostalCode(772) // false
hasPostalCode('TK') // false
hasPostalCode('TKL') // false
hasPostalCode('Tokelau') // false
hasPostalCode('Spain') // true
hasPostalCode('Españita') // undefined
hasPostalCode('💩') // undefinedhas-postalcode is released by Angel Custodio under MIT License