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Add customElements.getName() #3641

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Original file line number Diff line number Diff line change
Expand Up @@ -219,6 +219,12 @@ class CustomElementRegistryImpl {
return definition && definition.objectReference;
}

// https://html.spec.whatwg.org/#dom-customelementregistry-getname
getName(constructor) {
const found = this._customElementDefinitions.find(entry => entry.objectReference === constructor.objectReference);
return found ? found.name : null;
}

// https://html.spec.whatwg.org/#dom-customelementregistry-whendefined
whenDefined(name) {
if (!isValidCustomElementName(name)) {
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
interface CustomElementRegistry {
[CEReactions] undefined define(DOMString name, CustomElementConstructor constructor, optional ElementDefinitionOptions options = {});
any get(DOMString name);
DOMString? getName(CustomElementConstructor constructor);
Promise<void> whenDefined(DOMString name);
[CEReactions] undefined upgrade(Node root);
};
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