export declare class CacheStorage {
    private static _link?;
    private static _origin;
    static getOrigin(url: string): string;
    static isSameOrigin(src: string): boolean;
    static setContext(window: Window): void;
}
export interface ResourceOptions {
    imageTimeout: number;
    allowTaint: boolean;
}
export declare class Cache {
    private readonly _cache;
    addImage(src: string): Promise<void>;
    private has;
}