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Safari Technology Preview 86 Provides Bug Fixes and Performance Improvements

Safari Technology Preview 86 Provides Bug Fixes and Performance Improvements

Apple on Wednesday released Safari Technology Preview 86, 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 86

Pointer Events

  • Added support for chorded button interactions
  • Updated to fire pointerout and pointerleave events after firing pointercancel

JavaScript

  • Added support for String.prototype.matchAll)
  • Changed to throw a TypeError exception if Proxy’s set trap returns falsy value
  • Fixed JSON.parse to throw a syntax error when called without arguments

Web Assembly

  • Added support for Anyref tables, Table.get and Table.set for Anyref only
  • Added support for multiple tables
  • Added support for Table.size, grow and fill instructions
  • Fixed float64 “select” on ARM64 devices

WebRTC

  • Updated mediaDevices.enumerateDevices() to list the system default audio devices with deviceId as “default”

Web API

  • Fixed IntersectionObserver rootMargin detection failure when root is an element
  • Updated to avoid generating a new XSLT-based document when already changing the document.

CSS

  • Implemented tab-size with units
  • Included touch-action in the computed styles list

Security

  • Added wildcard to Access-Control-Allow-Methods and Access-Control-Allow-Headers
  • Changed blob URLs to inherit CSP policy from their parent
  • Changed data URLs to inherit their CSP policy from their parent

Experimental Web Shading Language (WHLSL)

  • Enabled compute shaders
  • Implemented array references
  • Implemented loop expressions
  • Implemented out-of-bounds and nullptr behavior
  • Supported matrices

WebGPU

  • Removed GPUBuffer.setSubData and implemented GPUDevice.createBufferMapped

Web Inspector

  • Included JavaScript call trees when exporting or importing Timeline recordings
  • Improved the performance of the CSS pretty printer by using a Worker
  • Split the General panel in the Settings tab into sub panels
  • Ensured that indent type and size settings are respected everywhere that there’s a CodeMirror editor
  • Added support for respecting case sensitive or regex global settings when searching in a resource
  • Changed to ensure that adding a DOM, Event, or URL breakpoint is enabled globally
  • Added support for multiline keys when using “Copy Path to Property”
  • Fixed an issue where longhand CSS properties that were overridden by shorthands didn’t have a strikethrough
  • Fixed an issue where query parameters in the Network tab would truncate if the value contained a =
  • Fixed an issue where the Inspector Style Sheet was missing when grouping resources by path

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.

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