import OAClientError from "../errors/OAClientError";
import type { Callers, RouteSpecs } from "../types";

export default (callers: Callers, routeSpecs: RouteSpecs, method: string) => {
  const type = routeSpecs["x-type"] ?? method;
  if (!(type in callers)) throw new OAClientError(2, { type, callers });
  return callers[type];
};