method Node.isHeritageClauseableimport { Node } from "https://dotland.deno.dev/x/fresh@1.1.5/src/dev/deps.ts"; isHeritageClauseable<T extends Node>(node: T | undefined): node is HeritageClauseableNode & HeritageClauseableNodeExtensionType & TGets if the node is a HeritageClauseableNode. Gets if the node is a HeritageClauseableNode. Type ParametersT extends NodeParametersnode: T | undefined Node to check. Returnsnode is HeritageClauseableNode & HeritageClauseableNodeExtensionType & T