/**
 * Iframe sandbox allowlist for the embedded CoW Swap app.
 * - allow-scripts + allow-same-origin: required for the SPA, storage, and same-origin API calls.
 * - allow-forms: trade inputs and similar controls.
 * - allow-popups + allow-popups-to-escape-sandbox: wallet connect / WalletConnect windows.
 */
export declare const WIDGET_IFRAME_SANDBOX = "allow-scripts allow-same-origin allow-forms allow-popups allow-popups-to-escape-sandbox";
/** Limits referrer leakage when the widget is embedded on third-party origins. */
export declare const WIDGET_IFRAME_REFERRER_POLICY = "strict-origin-when-cross-origin";
/** Permissions policy features delegated to the widget iframe (see HTML `allow` attribute). */
export declare const WIDGET_IFRAME_ALLOW = "clipboard-read; clipboard-write";