import type { Context } from 'koa';
type CookieSource = 'query' | 'x-custom-cookie' | 'header-cookie' | 'request' | 'global' | 'none';
interface ResolveCookieOptions {
    fallbackMode?: boolean;
    useGlobalCookie?: boolean;
    cookieParamName?: string;
}
interface ResolvedCookie {
    cookie?: string;
    source: CookieSource;
}
export declare const extractCookieValue: (cookie: string | undefined, name: string) => string | undefined;
export declare const getCookieKeys: (cookie: string | undefined) => string[];
export declare const extractUinFromCookie: (cookie?: string) => string | undefined;
export declare const setRequestCookieContext: (ctx: Context, cookie?: string) => void;
export declare const resolveRequestCookie: (ctx: Context, options?: ResolveCookieOptions) => ResolvedCookie;
export {};