Scoped custom element registriesThe CustomElementRegistry() constructor creates a new custom element registry that's separate from the global window.customElements registry. Creating more than one registry is useful for multiple custom elements that have the same tag name to coexist.custom-elementsCustom elementslimitedhttps://html.spec.whatwg.org/multipage/custom-elements.html#custom-elements-apihttps://dom.spec.whatwg.org/#element-custom-element-registryhttps://developer.mozilla.org/docs/Web/API/Element/customElementRegistryapi.CustomElementRegistry.CustomElementRegistryapi.CustomElementRegistry.initializeapi.Document.customElementRegistryapi.Element.customElementRegistryapi.HTMLTemplateElement.shadowRootCustomElementRegistryapi.ShadowRoot.customElementRegistryhttps://nowyoucanuse.com/features--scoped-custom-element-registries.html