export declare class SpyLocation implements Location { urlChanges: string[]; back(): void; forward(): void; go(path: string, query?: string): void; isCurrentPathEqualTo(path: string, query?: string): boolean; normalize(url: string): string; path(): string; prepareExternalUrl(url: string): string; replaceState(path: string, query?: string): void; setBaseHref(url: string): void; setInitialPath(url: string): void; simulateHashChange(pathname: string): void; simulateUrlPop(pathname: string): void; subscribe(onNext: (value: any) => void, onThrow?: (error: any) => void, onReturn?: () => void): Object; }