export declare const MAX_SUPPORTED_URL_MEDIA_TYPES = 128;
export declare const MAX_SUPPORTED_URL_PATTERNS = 128;
export declare const MAX_SUPPORTED_URL_TOTAL_PATTERNS = 1024;
export declare const MAX_SUPPORTED_URL_PATTERN_CHARS = 1048576;
export declare const MAX_SUPPORTED_URL_PATTERN_LENGTH = 4096;
export declare const SUPPORTED_URLS_DISCOVERY_TIMEOUT_MS = 1000;
export declare function cloneSupportedUrlPattern(value: unknown): RegExp | undefined;
export declare function cloneSupportedUrlPatterns(value: unknown): {
    chars: number;
    patterns: RegExp[];
} | undefined;
export declare function consumeSupportedUrlPromiseFields(value: object, keys: readonly string[]): void;
export declare function sanitizeSupportedUrls(value: unknown): Record<string, RegExp[]>;
export declare function settleSupportedUrls(supported: Promise<unknown>): Promise<Record<string, RegExp[]>>;