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serenity/Userland/Libraries/LibWeb/DOM/HTMLCollection.cpp
scorpion-26 7feff7ff87 LibWeb: Preserve order of HTMLCollection property names 
The supported property names should be ordered in "tree order", though
m_cached_name_to_element_mappings doesn't preserve this ordering, which
breaks Object.getOwnPropertyNames.

Fixes at least the following WPT tests:
 - https://wpt.live/dom/nodes/Element-children.html
 - https://wpt.live/dom/collections/HTMLCollection-live-mutations.window.html
 - https://wpt.live/dom/collections/HTMLCollection-supported-property-names.html

(cherry picked from commit d00adabc3c13f18ca46e9c8ab329551fdc3fdef3)
2024-11-25 08:50:54 -05:00

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