export declare const RSRC_RE: RegExp;
export declare const AMP_RE: RegExp;
export declare const SCONTENT_RE: RegExp;
export declare const STATIC_CDN_RE: RegExp;
export declare const LOOKASIDE_RE: RegExp;
export declare const INSTAGRAM_IMAGE_HOSTS: string[];
export declare const INSTAGRAM_ASSET_HOST = "static.cdninstagram.com";
export declare function proxyImageUrl(url: string, prefix?: string, secret?: string): string;
export declare function proxyAssetUrl(url: string, prefix?: string, secret?: string): string;
export declare function rewriteUrl(url: string, prefix?: string, secret?: string): string;
export declare function rewriteUrlsInText(text: string, prefix?: string, secret?: string): string;
/**
 * Scope CSS rules under a parent selector and strip global/page-level rules.
 * Removes :root, html, body selectors and @charset/@import at-rules.
 */
export declare function scopeCss(css: string, scopeSelector: string): string;