If you want the list of Turkey regions, you can easily include it in your project and use it.
How to use?: example
npm install turkey-city-regions
import TurkeyRegions turkey-city-regions
var allAreas = TurkeyRegions.getAllData // all data list <Array>
//Example
[ { il: 'ADANA',
ilce: 'ALADAĞ',
semt: 'ALADAĞ',
mahalle: 'AKPINAR MAH',
posta_kodu: '01720' }
....
]