export type CdnProvider = 'esm.sh' | 'jsdelivr' | 'unpkg';
export interface ActDepsConfig {
    provider?: CdnProvider;
    packages: Record<string, string>;
}
/**
 * Derive the ESM CDN URL for a package given a provider.
 */
export declare function resolveUrl(pkg: string, version: string, provider?: CdnProvider): string;
/**
 * Derive the CSS stylesheet URL for a known CSS package, or null if unknown.
 * Always uses jsDelivr for stylesheet delivery.
 */
export declare function resolveStylesheetUrl(pkg: string, version: string): string | null;
/**
 * Returns true if the package is known to ship a CSS stylesheet.
 */
export declare function isKnownCssPackage(pkg: string): boolean;