SwiftUI CustomTextFieldStyle example

CustomTextFieldStyle.swift

import SwiftUI

typealias CustomTextFieldStyle = ViewModifier

extension View {
  func customTextFieldStyle<S>(_ style: S) -> some View where S: CustomTextFieldStyle {
    modifier(style)
  }
}

LargeTextFieldStyle.swift

import SwiftUI

struct LargeTextFieldStyle: CustomTextFieldStyle {
  
   func body(content: Content) -> some View {
      VStack(spacing: 2) {
         content
            .font(font)
            .disableAutocorrection(true)
            .autocapitalization(.words)
         Rectangle().foregroundColor(Color.blue).frame(maxWidth: .infinity, maxHeight: 2)
      }
   }
   
   let font: Font = Font.system(size: 26, weight: .bold)
}

extension CustomTextFieldStyle where Self == LargeTextFieldStyle {
  static var large: LargeTextFieldStyle { LargeTextFieldStyle() }
}