Swift JSONDecoder decode file

JSONDecoder+File.swift

//
//  Created by Apro on 06/12/19.
//

import UIKit

extension JSONDecoder {
  private static let fileType = "json"

  func decodeFile<T: Codable>(name: String, completion: @escaping (Result<T, Error>) -> Void) {
    DispatchQueue.global(qos: .userInitiated).async { [weak self] in
      let path = Bundle.main.path(forResource: name, ofType: JSONDecoder.fileType)
      do {
        let t = try self?.decode(T.self, from: Data(contentsOf: URL(fileURLWithPath: path!)))
        DispatchQueue.main.async {
          completion(.success(t!))
        }
      } catch {
        DispatchQueue.main.async {
          completion(.failure(error))
        }
      }
    }
  }
}