refactor/#70 :: Decoder 생성

Author: hsw1920

PhotoGether/DataLayer/PhotoGetherData/PhotoGetherData/EventConnection/EventConnectionGuestRepositoryImpl.swift

@@ -7,17 +7,20 @@ public final class EventConnectionGuestRepositoryImpl: EventConnectionRepository
     private var cancellables: Set<AnyCancellable> = []
     private var receiveDataFromHost = PassthroughSubject<Data, Never>()
 
-    private var decoder: JSONDecoder = {
-        let decoder = JSONDecoder()
-        decoder.dateDecodingStrategy = .iso8601
-        return decoder
-    }()
+    private let decoder: JSONDecoder
 
     public init(clients: [ConnectionClient]) {
         self.clients = clients
+        self.decoder = JSONDecoder()
+        
+        setupDecoder()
         bindData()
     }
 
+    private func setupDecoder() {
+        decoder.dateDecodingStrategy = .iso8601
+    }
+    
     private func bindData() {
         // MARK: Host로 부터 들어오는 Data를 send한다.
         // clients.filter { $0 == .host }