method Node.isExportableimport { Node } from "https://deno.land/x/fresh@1.6.1/src/dev/deps.ts"; isExportable<T extends Node>(node: T | undefined): node is ExportableNode & ExportableNodeExtensionType & TGets if the node is an ExportableNode. Gets if the node is an ExportableNode. Type ParametersT extends NodeParametersnode: T | undefinedReturnsnode is ExportableNode & ExportableNodeExtensionType & T