Preview.swift

import SwiftUI

struct Preview<Content: View>: View {
    private let content: () -> Content
    
    init(@ViewBuilder content: @escaping () -> Content) {
        self.content = content
    }
    
    var body: some View {
        Group {
            content()
                .environment(\.colorScheme, .light)
                .previewDisplayName("라이트모드")
            
            content()
                .environment(\.colorScheme, .dark)
                .previewDisplayName("다크모드")
            
            if #available(iOS 15.0, *) {
                content()
                    .previewInterfaceOrientation(.landscapeLeft)
                    .previewDisplayName("가로모드")
            }
        }
    }
}