Nuke 13.1.0

What's Changed

• Fix GaussianBlur crash on grayscale images by @Delarkz in kean#880
• Fix cache initialization for mergeable libraries by @ZHUOLIN0928 in kean#881
• Add asynchronous image decoding support by @thliu21 in kean#879
• Add ImageDecoderRegistry.unregister(_:). register(_:) now returns a discardable RegistrationToken for removing an individual decoder instead of clearing the entire registry
• ImageDecoderRegistry.register(_:) now takes a @Sendable closure. The registry is shared between the pipelines and the closures are called on the decoding threads
• Fix a data race in ImageDecoderRegistry where decoder(for:) iterated the registered decoders without holding the lock. The registry is now backed by Mutex and is Sendable instead of @unchecked Sendable
• Fix a leak where requests that finish synchronously (memory cache hits, disk cache hits for data(for:), local resources, .returnCacheDataDontLoad misses, and malformed URLs) were never removed from the pipeline, retaining their responses for its lifetime
• Fix ImageTask.Event.started being delivered to ImagePipeline.Delegate after .finished for requests that finish synchronously
• Fix DataLoader calling completion twice when response validation fails, violating the DataLoading contract
• Fix a request cancelled while ImagePipeline.Delegate.willLoadData(for:urlRequest:pipeline:) was suspended still running the download to completion, discarding the result and occupying a slot in dataLoadingQueue
• Fix resumable data being lost when a request ended before the server responded. It's now put back if nothing new was downloaded
• Fix requests with ImageRequest.Options.skipDataLoadingQueue not cancelling the underlying Task, leaving an async willLoadData or a custom data fetch closure running after cancellation
• Fix progressive previews being permanently disabled when the first downloaded chunk isn't enough to tell that the image supports them, which is common for progressive JPEGs with large EXIF/ICC preambles. The policy is now re-evaluated as more data arrives, but only until it starts producing previews and with a hard cap on the number of attempts
• Fix ImageDecoders.Empty not marking the containers returned by decodePartiallyDownloadedData(_:) as previews, so the truncated data was stored in the caches and delivered as a completed response on the subsequent cache hits
• Fix ImageProcessors.CoreImageFilter sharing a single mutable CIFilter between concurrently processed images. CIFilter is not thread-safe, so the processor could produce an image from another request's input and cache it under the wrong key. It now applies a copy of the filter
• Fix the screen scale used by ImageProcessingOptions.Unit.points being read once and cached for the lifetime of the process. UITraitCollection.current reports a 0 display scale outside of the contexts managed by UIKit, so if the first points-based ImageRequest was created on a background thread, every subsequent resize failed with processingFailed and the point-based border widths and corner radii became 0
• Fix a crash on macOS when an ImageProcessingOptions.Border is created with an NSColor outside an RGB colorspace, including .black, .white, and the catalog colors such as .labelColor. Unlike UIColor, NSColor raises from getRed(_:green:blue:alpha:) instead of converting on the fly, so merely reading the processor identifier terminated the process. The color is now converted to sRGB first
• Fix ImagePrefetcher.stopPrefetching(with:) and ImagePrefetcher.stopPrefetching() doing nothing for the prefetches that were scheduled but haven't started yet. In the standard collection view pattern, the requests ran the entire download/decode/cache cycle anyway
• Fix ImagePrefetcher.priority not reaching the prefetches that were scheduled but haven't started yet. They kept the priority frozen in their original requests and eventually did the actual work at the old priority
• Fix the async/await variant of FetchImage.load(_:) delivering a result after the load was cancelled or superseded, overwriting the state of the newer load
• Fix LazyImage with the lowerPriority disappear behavior permanently lowering the priority of its requests after the view goes off-screen. The override wasn't reset when the view reappeared
• Fix LazyImageView stacking the views created by makeImageView. A view was added for every displayed response without removing the previous one, so the orphaned views survived cell reuse, covered the newer content, and retained their images

New Contributors

• @Delarkz made their first contribution in kean#880
• @ZHUOLIN0928 made their first contribution in kean#881
• @thliu21 made their first contribution in kean#879

Full Changelog: kean/Nuke@13.0.6...13.1.0