PsersitentContainer.swift

import Foundation 
import CoreData

struct PersitentContainer {
        static let shared =  PersitentContainer(modelName: "your-model-name")
        init(modelName: String) {
                let persistanceContainer = NSPersistentContainer(name: modelName)
                persistanceContainer.loadPersistentStores { storeDescription, error in
                        guard error == nil else { fatalError(error!.localizedDescription) }
                        print("Store configured successfully")  
                }
        }
}