import http from "node:http";
import https from "node:https";

function onError(err: any) {
    console.log(err);
}

const httpServer = {} as http.Server
httpServer.on("error", onError);
httpServer.off("error", onError);

const httpsServer = {} as https.Server
httpsServer.on("error", onError);
httpsServer.off("error", onError);

const server = {} as http.Server | https.Server
server.on("error", onError);
server.off("error", onError);
/*     ~~~
This expression is not callable.
Each member of the union type
{
  <EventName extends string | symbol>(eventName: EventName, listener: Listener<{}, EventName>): Server<typeof IncomingMessage, typeof ServerResponse>;
  <EventName extends string | symbol>(eventName: EventName, listener: Listener<{}, EventName>): Server<typeof IncomingMessage, typeof ServerResponse>;
} | {
  <EventName extends string | symbol>(eventName: EventName, listener: Listener<{}, EventName>): Server<typeof IncomingMessage, typeof ServerResponse>;
  <EventName extends string | symbol>(eventName: EventName, listener: Listener<{}, EventName>): Server<typeof IncomingMessage, typeof ServerResponse>;
}
has signatures, but none of those signatures are compatible with each other. ts(2349)
*/