method Node.isOverloadableimport { Node } from "https://dotland.deno.dev/x/fresh@1.7.3/src/dev/deps.ts"; isOverloadable<T extends Node>(node: T | undefined): node is OverloadableNode & OverloadableNodeExtensionType & TGets if the node is a OverloadableNode. Gets if the node is a OverloadableNode. Type ParametersT extends NodeParametersnode: T | undefinedReturnsnode is OverloadableNode & OverloadableNodeExtensionType & T