declare namespace c { interface CookieJar { getCookieString(currentUrl: string, cb: (err: any, cookies: string) => void): void; setCookie(cookieString: string, currentUrl: string, cb: (err: any) => void, opts: { ignoreError: boolean }): void; } } declare function c(fetch: Function, jar?: c.CookieJar, ignoreError: boolean): Function; export = c;