type JsonObject = Record<string, unknown>;
interface TarEntry {
    path: string;
    kind: "file" | "directory";
    size: number;
}
export declare function preflightTarball(bytes: Uint8Array, limits?: {
    maxExpandedBytes?: number;
    maxEntries?: number;
}): Promise<{
    entries: TarEntry[];
    expandedBytes: number;
}>;
export declare function readBodyCapped(response: Response, limit: number, errorCode: string): Promise<Uint8Array>;
export declare function adoptCopyfileAliases(options?: {
    homeDir?: string;
    pathValue?: string;
    onAliasSwitched?: (path: string) => void;
}): JsonObject;
export declare function rollbackCopyfileAliases(receiptId: string, options?: {
    homeDir?: string;
    pathValue?: string;
}): JsonObject;
export declare function updateCopyfileRuntime(version: string, options?: {
    homeDir?: string;
    pathValue?: string;
    cwd?: string;
    registryOrigin?: string;
    fetcher?: typeof fetch;
    minReleaseAge?: number;
    minReleaseAgeExclude?: string[];
    reviewedLock?: string;
    reviewedLockSha256?: string;
    onLauncherSwitched?: (path: string) => void;
}): Promise<JsonObject>;
export declare function rollbackCopyfileRuntime(receiptId: string, options?: {
    homeDir?: string;
}): JsonObject;
export {};