import type { ClusterVariant } from './types.js';
/** Options for fetching cluster templates. */
export interface FetchOptions {
    /** Cluster variant to extract from the tarball. */
    variant: ClusterVariant;
    /** Git ref (branch, tag, or commit SHA) to fetch. Defaults to `'main'`. */
    ref?: string;
    /** GitHub token for authorization. If omitted, requests are unauthenticated. */
    token?: string | null;
    /** When true, bypass the local cache and re-download. */
    refreshCache?: boolean;
}
/**
 * Fetch cluster base repo files from GitHub.
 *
 * Downloads the tarball for the given variant's base repo, extracts all files,
 * and caches them locally. Subsequent calls with the same repo and ref are
 * served from cache unless `refreshCache` is set.
 *
 * @returns Map from target path (e.g. `.devcontainer/Dockerfile`) to file content.
 * @throws {Error} On network failures or HTTP errors.
 */
export declare function fetchClusterTemplates(options: FetchOptions): Promise<Map<string, string>>;
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