Apple on Wednesday released Safari Technology Preview 94, the latest version of their developer preview web browser. The preview version of Apple’s popular browser offers developers and other interested users the ability to try out features that may or may not, debut in future public release versions of Safari.
Release 94
CSS Shadow Parts
- Added support for the ::part() pseudo element from CSS Shadow Parts
Web Animations
- Fixed removing an element to only cancel its declarative animations
Storage Access API
- Changed document.hasStorageAccess() to return true when the cookie policy allows access and false otherwise, for third parties not blocked by ITP
WebRTC
- Changed to allow suspending RTCPeerConnection when not connected
Media
- Updated MediaDevices to require a secure context
JavaScript
- Changed toExponential, toFixed, and toPrecision to allow arguments up to 100
CSS Grid
- Preserved auto repeat() in getComputedStyle() for non-grids
Web API
- Accepted two values in the overflow shorthand
- Allowed using WebGL 2 when USE_ANGLE=1
- Changed the default statusText of Response to an empty string
- Changed CSS ellipse() to accept 0 or 2 <shape-radius>
- Changed Service Worker Fetch events to time out
- Corrected clip-path <geometry-box> mapping
- Changed Fetch API no-CORs check to take into account same-origin
- Changed radio button groups to be scoped by shadow boundaries
- Fixed a newly inserted element to get assigned to a named slot if slot assignments had already happened
- Fixed AbortSignal to always emit the abort signal
- Fixed JSON.parse to correctly handle array proxies
- Made table’s clientWidth and clientHeight include its border sizes
- Updated attachShadow to support attaching a shadow root to a main element
- Updated Fetch data URL HEAD request to result in empty response body
- Updated radial gradients to reject negative radii
- Updated ImageBitmap to be serializable
Web Inspector
- Elements
- Fixed issue where properties were always shown as invalid if they didn’t match the selected node
- Resources
- Fixed issue where newlines were being unexpectedly added inside template string expressions
- Include local resource overrides in the Open Resource dialog
- Debugger
- Prevent blackboxing of scripts that haven’t finished loading or failed to load
- Canvas
- Made it more obvious that the cards in the Overview are clickable
- Show “No Preview Available” instead of an empty preview for WebGPU devices
- Support editing of WebGPU render pipelines that use the same shader module for vertex and fragment
- Fixed issue where clicking on the Overview path component didn’t work
- Dark Mode: Minor dark mode style fixes
- Settings
- Enable the image transparency grid by default and create a checkbox for it
WEBDRIVER
- Fixed an issue that prevented sudo safaridriver –enable from working correctly
back-forward Cache
- Allowed pages served over HTTPS with Cache-Control: no-store header to enter the back-forward cache
- Allowed pages using EventSource to enter the back-forward cache
- Allowed pages using FontFaceSet to enter the back-forward cache
- Allowed pages using IDBIndex to enter the back-forward cache
- Added basic back-forward cache support for RTCPeerConnection
- Changed IDBTransaction and IDBObjectStore to not prevent a page from entering the back-forward cache
- Fixed pages that frequently fail to enter the back-forward cache due to pending loads
- Fixed pages using WebGLRenderingContext to enter the back-forward cache
- Fixed pages with Web Workers to enter the back-forward cache
- Fixed pages using PendingImageBitmap to enter the back-forward cache
- Fixed ServiceWorkerContainer to never prevent a page from entering the back-forward cache
- Fixed XMLHttpRequest sometimes preventing pages from entering the back-forward cache
- Fixed IDBRequest to not prevent a page from entering the back-forward cache
- Fixed provisional and scheduled loads in subframes to not prevent a page from entering the back-forward cache
- Fixed RTCDataChannel to not prevent entering back-forward cache except if in an open state
- Made fixes to allow youtube.com to enter the back-forward cache on macOS
- Improved Service Worker support for back-forward cache
IndexedDB
- Added size estimate for key path when estimating task size
- Fixed wrapping CryptoKeys for IndexedDB during serialization
- Included size of index records in size estimate of put/add task
- Updated size to actual disk usage only when estimated increase is bigger than the space available
The update can be downloaded from the Safari Technology Preview website, or if the browser is already installed, it can be updated via the “Update” tab in the Mac App Store. Full release notes for the update are also available on the Safari Technology Preview website.
While the preview is intended for use by developers and advanced users, in order to provide Apple with feedback on the development of the Safari browser, it can be run side-by-side with the release version of Safari. The app doesn’t require a developer account to download and install. For more information, visit the Safari Technology Preview website.
