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protocol URLRequestable {
  func load(urlRequest: URLRequest)
}

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class LegacyWebView: UIView, URLRequestable {
  
  private var webView: UIWebView!
  
  func load(urlRequest: URLRequest) {
    webView.loadRequest(urlRequest)
  }
  
  // other code here
  

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class ConsumerViewController: UIViewController {
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    let webView = createWebView(usingModern: true)
    // add webView to the view hierachy
    if let urlRequestable = webView as? URLRequestable {
      urlRequestable.load(urlRequest: URLRequest(url: URL(string: "www.google.it")!))
    }

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{
  "plugins": [ ["transform-remove-console", { "exclude": [ "error" ] }] ]
}

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{
    "plugins": ["transform-remove-console"]
}

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yarn install --dev babel-plugin-transform-remove-console

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{
  "name": "MyBrownfieldApp",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start"
  },
  "dependencies": {
    "react": "16.3.1",
    "react-native": "0.55"

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func webView(_ webView: WKWebView, decidePolicyFor navigationResponse: WKNavigationResponse, decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void) {
  guard let response = navigationResponse.response as? HTTPURLResponse,
    let url = navigationResponse.response.url else {
    decisionHandler(.cancel)
    return
  }

  if let headerFields = response.allHeaderFields as? [String: String] {
    let cookies = HTTPCookie.cookies(withResponseHeaderFields: headerFields, for: url)
    cookies.forEach { cookie in

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HTTPCookieStorage.shared.cookieAcceptPolicy = .always

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precedencegroup CustomPrecedenceGroup {
    associativity: left
}

infix operator |> : CustomPrecedenceGroup

func |> (value: Int, f: (Int) -> Int) -> Int {
    return f(value)
}