import { Request, Response } from 'express';
import { Shopify } from '@shopify/shopify-api';
/**
 * Serves the App Bridge bootstrap shim for a document (page load) request.
 *
 * App Bridge loads in the browser, obtains a fresh session token, and reloads
 * the page with it attached. This is how an embedded document request that is
 * missing or has a stale session token recovers, without a top-level OAuth
 * redirect. Mirrors `renderAppBridge` in the React Router package.
 */
export declare function renderAppBridge(api: Shopify, req: Request, res: Response): void;
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