132730 defineProperty 2014-05-09 00:37:36 -0700 Object.defineProperty ERROR 2025-05-23 17:50:41 -0700 1 1 1 Unclassified WebKit DOM 528+ (Nightly build) Unspecified Unspecified NEW P2 Normal --- 1 xinchao.peng webkit-unassigned ahmad.saleem792 ashvayka fpizlo ysuzuki oldest_to_newest 1007921 0 xinchao.peng 2014-05-09 00:37:36 -0700 The below JS Source : var keyEvent = document.createEvent('KeyboardEvent'); Object.defineProperty(keyEvent, 'which', {get: function() { return 6; }}); It will throw errer : " Attempting to change enumerable attribute of unconfigurable property." The JS source run in Safari , It will throw errer : " Attempting to change enumerable attribute of unconfigurable property.". They run in chrome , it is ok . 1989052 1 ahmad.saleem792 2023-10-31 19:05:08 -0700 Just created this JSFiddle: https://jsfiddle.net/zdjoc0yL/ It does not throw any error in Safari 17. Anything needed here?