With State helper

WithState.swift

import SwiftUI

/*
 This is here to make working with state and bindings in previews easier. See below for an example.

 If you're using a recent version of Xcode you can use the [Previewable](https://developer.apple.com/documentation/SwiftUI/Previewable()) macro instead.
 */

struct WithState<Value, Content: View>: View {
    @ViewBuilder var content: (Binding<Value>) -> Content
    @State private var value: Value

    init(_ initialValue: Value, @ViewBuilder content: @escaping (Binding<Value>) -> Content) {
        _value = .init(initialValue: initialValue)
        self.content = content
    }

    var body: some View {
        content($value)
    }
}


#Preview {
    WithState(true) { binding in
        Toggle("Is On", isOn: binding)
    }
}