ConverterView.swift

var fieldsView: some View {
        VStack(spacing: .padding) {
            ForEach(state.converter.fields.prefix(state.props.countOfFields)) { field in
                HStack(spacing: .padding) {
                    CurrencyButton(field: field)
                    ConverterFieldView(field: field)
                }
            }
        }
    }

CurrencyButton.swift

import SwiftUI

struct CurrencyButton: View, Equatable {
    
    @ObservedObject var field: ConverterField
    
    @EnvironmentObject var state: AppState
    
    var body: some View {
        Button(action: showCurrencies) {
            HStack(spacing: .smallPadding) {
                iconView
                codeView
            }
        }
        .buttonStyle(CurrencyButtonStyle())
        .accessibility(identifier: "currency-\(field.index)")
        .background(Color.random)
    }
    
    var iconView: some View {
        CurrencyIconView(
            currency: field.currency,
            size: .currencyMiddleIcon
        )
    }
    
    var codeView: some View {
        Text(field.currency.code.prefix(3))
            .lineLimit(1)
            .frame(width: .currencyCodeWidth)
            .font(.code)
            .minimumScaleFactor(0.3)
    }
    
    func showCurrencies() {
        state.showCurrencies(field)
    }
    
    static func == (lhs: Self, rhs: Self) -> Bool {
        lhs.field.currency.code == rhs.field.currency.code
    }

}