/**
 * Definition of a node that implements an interface, but does nothing.
 * Dummy nodes usually serve as placeholders until type of the node is decided
 * between code and structure.
 */
export interface DummyNodeDef<I, O> {
  inputNames: Array<keyof I>;
  outputNames: Array<keyof O>;
  spreadInputNames: Array<keyof I>;
  spreadOutputNames: Array<keyof I>;
}