Firefox 150 adds customElementRegistry property behind pref#29371
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Firefox 150 adds customElementRegistry property behind pref#29371
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caugner
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customElementRegistry property behind pref
caugner
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Apr 3, 2026
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FF150 added support for
Element.customElementRegistry,Document.customElementRegistryShadowRoot.customElementRegistrybehind the preferencedom.scoped-custom-element-registries.enabledin https://bugzil.la/2018900This updates the features.
Related docs work can be tracked in mdn/content#43555