/**
 * Open the user's default browser at `url`. Cross-platform wrapper used
 * by `nevermined login` and `nevermined cards setup/enroll/delegate`.
 *
 * On Windows we deliberately avoid `cmd /c start <url>`: cmd parses `&`
 * inside the URL as a command separator, which truncates any URL that
 * carries multiple query parameters (every redirect flow we use). Using
 * `rundll32 url.dll,FileProtocolHandler` hands the URL to the OS's
 * registered protocol handler verbatim — no shell parsing, no
 * truncation, no command-injection vector if the URL ever carries
 * caller-controlled state.
 */
export declare function openBrowser(url: string): Promise<void>;
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