shawnkoh

// MARK: - UseCases

struct InputData {}

protocol InputBoundary {
    func doSomething(inputData: InputData, presenter: OutputBoundary)
}

protocol OutputBoundary {
    var viewModel: ViewModel { get }

shawnkoh

import SwiftUI

@main
struct ExampleApp: App {
    init() {    
        FirebaseApp.configure()
        let settings = FirestoreSettings()
        Firestore.firestore().settings = settings
    }
  

shawnkoh

protocol FirebaseService {
    func configure()
}

class RealFirebaseService: FirebaseService {
    func configure() {
        FirebaseApp.configure()
        let settings = FirestoreSettings()
        Firestore.firestore().settings = settings
    }

shawnkoh

import SwiftUI

@main
struct ExampleApp: App {
    init() {
        if ProcessInfo.processInfo.environment["XCODE_RUNNING_FOR_PREVIEWS"] == "1" {
            // SwiftUI Preview is running.
            // Do nothing.
        } else {
            FirebaseApp.configure()