hyperoslo-Cache/Source/iOS/UIImage+Extensions.swift

import UIKit

/**
 Helper UIImage extension.
 */
extension UIImage {
  /**
   Checks if image has alpha component
   */
  var hasAlpha: Bool {
    let result: Bool

    guard let alpha = cgImage?.alphaInfo else {
      return false
    }

    switch alpha {
    case .none, .noneSkipFirst, .noneSkipLast:
      result = false
    default:
      result = true
    }

    return result
  }
}