Whether the environment supports scoped registries — i.e. whether
CustomElementRegistry is constructable. In non-supporting browsers the
constructor throws ("Illegal constructor"); with native support or the
polyfill it returns a fresh, independent registry.
Whether the environment supports scoped registries — i.e. whether
CustomElementRegistryis constructable. In non-supporting browsers the constructor throws ("Illegal constructor"); with native support or the polyfill it returns a fresh, independent registry.