method Node.isUnionTypeNodeimport { Node } from "https://dotland.deno.dev/x/fresh@1.6.7/src/dev/deps.ts"; isUnionTypeNode(node: Node | undefined): node is UnionTypeNodeGets if the node is a UnionTypeNode. Gets if the node is a UnionTypeNode. Parametersnode: Node | undefinedReturnsnode is UnionTypeNode