/**
 * This should be used any time the redirect path is user-provided
 * (Like the query string on our login/signup pages). This avoids
 * open-redirect vulnerabilities.
 * @param {string} to The redirect destination
 * @param {string} defaultRedirect The redirect to use if the to is unsafe.
 * @license MIT
 * @author https://github.com/jacob-ebey
 */
export declare function safeRedirect(to: FormDataEntryValue | string | null | undefined, defaultRedirect?: string): string;