method Node.isScopeableimport { Node } from "https://deno.land/x/fresh@1.6.0/src/dev/deps.ts"; isScopeable<T extends Node>(node: T | undefined): node is ScopeableNode & ScopeableNodeExtensionType & TGets if the node is a ScopeableNode. Gets if the node is a ScopeableNode. Type ParametersT extends NodeParametersnode: T | undefinedReturnsnode is ScopeableNode & ScopeableNodeExtensionType & T