hyper/app/extend-electron.d.ts

import type {Server} from './rpc';

declare global {
  namespace Electron {
    interface App {
      config: typeof import('./config');
      plugins: typeof import('./plugins');
      getWindows: () => Set<BrowserWindow>;
      getLastFocusedWindow: () => BrowserWindow | null;
      windowCallback?: (win: BrowserWindow) => void;
      createWindow: (
        fn?: (win: BrowserWindow) => void,
        options?: {size?: [number, number]; position?: [number, number]},
        profileName?: string
      ) => BrowserWindow;
      setVersion: (version: string) => void;
    }

    // type Server = import('./rpc').Server;
    interface BrowserWindow {
      uid: string;
      sessions: Map<any, any>;
      focusTime: number;
      clean: () => void;
      rpc: Server;
      profileName: string;
    }
  }
}