/// A rendition an image asset is available at, from the narrowest up to the full-size file.
///
/// ``StaticFile`` names one file per rendition, and a page's `srcset` offers them all so the browser picks by rendered width.
/// The declaration order is the `srcset` order: narrowest first.
enum ImageWidth: CaseIterable {
    /// The small rendition, 480 pixels wide.
    case small
    /// The medium rendition, 800 pixels wide.
    case medium
    /// The large rendition: the full-size file, 1200 pixels wide.
    case large
}

// MARK: - Extensions

extension ImageWidth {

    // MARK: Computed

    /// The rendition's width in pixels: what the file is resampled to, and what its `srcset` descriptor states.
    var width: Int {
        switch self {
        case .small: 480
        case .medium: 800
        case .large: 1200
        }
    }

}