/**
 * The preload script runs in a renderer context, so `window` exists at runtime.
 *
 * But `tsconfig.node.json` — which covers main *and* preload — deliberately
 * omits the DOM lib, so that main-process code cannot accidentally reference a
 * `document` that is not there. Pulling the whole DOM in to satisfy one call
 * would give up that guarantee.
 *
 * So only the single method the preload actually needs is declared.
 */
declare const window: {
  postMessage(message: unknown, targetOrigin: string, transfer?: MessagePort[]): void
}