Safari Technology Preview Release 2 już dostępny

14/04/2016, 08:34 · · · 4

Dwa tygodnie temu światło dzienne ujrzał Safari Technology Preview, który wprowadza nowości, które następnie pojawią się w „niebieskim Safari”. Wczoraj pojawiła się jego druga wersja.

Safari Technology Preview – przedsmak tego co trafi do Safari

Pełną listę zmian i nowości znajdziecie tutaj, a jeśli macie go zainstalowanego, to uaktualnienie pojawi Wam poprzez Mac App Store. A jeśli chcecie go zainstalować, to szczegóły znajdziecie w powyższym wpisie.


Browser Differences

  • Changed the CFBundleSignature to allow Apple Events, like those sent from AppleScript, to correctly distinguish between Safari and Safari Technology Preview


  • Added ES6 support for Symbol.isConcatSpreadable (r198808)
  • Disallowed var assignments in for-in loops according to ES6 specs (r198928)
  • Improved stability for ES6 classes when invoking a method of the parent class before calling super() in a constructor (r198714)
  • Allowed undefined or null for and Symbol.match (r198581)
  • Enabled Array.prototype native functions’ species constructors to work with proxies (r198589)
  • Implemented the proposal for String.prototype.padStart() and String.prototype.padEnd() (r198674)
  • Implemented ES6 spec for String.prototype.match and RegExp.prototype[@@match] (r198554)
  • Included a workaround for web compatibility on ES6 TypeErrors when accessing RegExp.prototype flag properties (r198698)
  • Corrected quantified unicode regular expressions (r198866)
  • Ensured greedy unicode regular expressions properly backtrack past non-BMP characters (r198624)
  • Implemented the allow-end value of the hanging-punctuation CSS property (r198683)
  • Improved web compatibility by resetting CSS spacing rules on <math> elements (r198952)
  • Added the new color-gamut CSS media query (r199024)
  • Updated screen queries to check the capabilities of the current screen instead of the deepest available screen (r198595)

Web APIs

  • Restricted WebSockets header parsing according to RFC6455 and RFC7230 (r198561)
  • Improved performance of certain draw calls in WebGL with a non-power-of-two texture optimization (r198588)
  • Disabled the Fetch API until the implementation is ready to be enabled by default (r199081)
  • Enhanced Shadow DOM support to compute styles for the style attribute of <slot> elements (r198990)
  • Softened pushState and replaceState frequency restrictions (r198687)

Web Inspector

  • Timelines tab performance and bug fixes (r198550, r198563, r198601, r198602, r198603, r198618, r198620, r198745, r199077, r199085)
  • Disabled debugger statements while profiling a page to ensure maximum performance accuracy (r198648)
  • Added the ability to configure timeline instruments to use for recordings (r198537)
  • Added a paint count indicator in the top left corner of non-opaque layers (r198599)
  • Added font-variant-numeric to CSS autocompletions (r198750)
  • Added the console.takeHeapSnapshot method for capturing heap snapshots (r198786)
  • Changed details sidebar shortcuts to Command-Option-0 and Command-Shift-0 (r199082)
  • Double-quotes and backslashes in strings are now displayed correctly in the console (r198585)
  • Improved the consistency of CSP directive violation messages reported in the console (r198591)


  • Corrected new lines in content editable elements to notify accessibility (r199030)
  • Updated the handling of SVG elements with a presentational role to be the same as other host language elements (r198870)
  • Limited the numbered list announcement for a list item number to the first line of text in the list item (r198806)
  • Changed the accessibility role descriptions for JavaScript alerts to “web dialog” and “web alert dialog” to make them more understandable to screen reader users (r198543)


  • Updated backdrop filter to repaint when changed in JavaScript (r198963)
  • Corrected drawing SVG stroke patterns for objects with empty bounding box elements (r198574)


  • Improved stability when an audio source is changed while being processed (r198654)
  • Fixed audio track listings (r198703)


  • Improved the reliability of speculative disk cache validation requests with the HTTP Referer header (r198741)

Bug Fixes

  • Fixed autoscrolling in a drag selection when a window is against the screen edge, including while in full screen mode (r198692)


Wojtek Pietrusiewicz

Wydawca, fotograf, podróżnik, podcaster – niekoniecznie w tej kolejności. Lubię espresso, mechaniczne zegarki, mechaniczne klawiatury i zwinne samochody.