Whalebird-desktop-client-mac-linux-windows/renderer/interfaces/index.ts

// You can include shared interfaces/types in a separate file
// and then use them in any component by importing them. For
// example, to import the interface below do:
//
// import User from 'path/to/interfaces';
// eslint-disable-next-line @typescript-eslint/no-unused-vars
import { IpcRenderer } from 'electron'

declare global {
  // eslint-disable-next-line @typescript-eslint/no-namespace
  namespace NodeJS {
    interface Global {
      ipc: IpcRenderer
    }
  }
}