Underlined text field component

UnderlinedTextField.swift

import SnapKit
import UIKit

class UnderlinedTextField: UIView {
  lazy var textField: UITextField = {
    let textField = UITextField()
    textField.backgroundColor = .clear
    textField.borderStyle = .none
    return textField
  }()

  lazy var underline = HorizontalLineView(backgroundColor: .lightGray, height: 1)

  init() {
    super.init(frame: .zero)

    addSubview(textField) {
      $0.fillHorizontally()
      $0.top.equalToSuperview()
      $0.bottom.equalToSuperview().offset(-1)
    }

    addSubview(underline) {
      $0.fillHorizontally()
      $0.bottom.equalToSuperview()
    }
  }

  required init?(coder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
  }
}