/**
 * Tries to find the CSRF token in cookies.
 */
export declare function findTokenInCookie(): string | undefined;
/**
 * Find the CSRF token from a meta tag in the header.
 */
export declare function findTokenInMeta(): string | undefined;
/**
 * Find the CSRF token from a meta input
 */
export declare function findTokenInInput(): string | undefined;
/**
 * Get the type of the token retrieved.
 */
export declare function isCsrfToken(token: string): boolean;