method Node.isExclamationTokenableimport { Node } from "https://deno.land/x/fresh@1.6.3/src/dev/deps.ts"; isExclamationTokenable<T extends Node>(node: T | undefined): node is ExclamationTokenableNode & ExclamationTokenableNodeExtensionType & TGets if the node is an ExclamationTokenableNode. Gets if the node is an ExclamationTokenableNode. Type ParametersT extends NodeParametersnode: T | undefinedReturnsnode is ExclamationTokenableNode & ExclamationTokenableNodeExtensionType & T