인프런 커뮤니티 질문&답변

import { Equal, Expect } from "./helper";
export type Event =
  | {
      type: "click";
      event: MouseEvent;
    }
  | {
      type: "focus";
      event: FocusEvent;
    }
  | {
      type: "keydown";
      event: KeyboardEvent;
    };

type objType = Event["type"];
type EventType = objType;

type tests = [Expect<Equal<EventType, "click" | "focus" | "keydown">>];