declare const OAUTH_STATE_COOKIE = "oauth_state";
declare function verifySignedOAuthStateValue(value: string): boolean;
declare function createOAuthState(): {
    state: string;
};
declare function createOAuthStateCookie(): {
    state: string;
    cookie: string;
};
declare function verifyOAuthState(_request: Request, returnedState: string | null): boolean;
declare function clearOAuthStateCookie(): string;
export { clearOAuthStateCookie, createOAuthState, createOAuthStateCookie, OAUTH_STATE_COOKIE, verifyOAuthState, verifySignedOAuthStateValue, };