message: implementation should be optional parameter
diff: @@ -46,7 +46,7 @@ export const modes: { [k: string]: InteractionModeFactory } = {
  lazy
  };
  -export const setInteractionMode = (mode: string, implementation: InteractionModeFactory) => {
  +export const setInteractionMode = (mode: string, implementation?: InteractionModeFactory) => {
  setConfig({ mode });
  if (!implementation) {
  return;
  