interface NonDocumentTypeChildNodeimport { type NonDocumentTypeChildNode } from "https://deno.land/x/evt@v2.5.3/lib/types/lib.dom.ts"; PropertiesreadonlynextElementSibling: Element | nullReturns the first following sibling that is an element, and null otherwise. readonlypreviousElementSibling: Element | nullReturns the first preceding sibling that is an element, and null otherwise.