import type { Command } from "commander";
/**
 * Newest installed plugin version from the Claude plugin cache, or null when
 * no cache exists. Reads each cached copy's own manifest (dir names can lie —
 * a manual publish once shipped plugin 0.15.2 bundling CLI 0.24.0), falling
 * back to the dir name for pre-manifest bundles.
 */
export declare function installedPluginVersion(cacheBase?: string): string | null;
export declare function registerVersionCommand(program: Command, cliVersion: string): void;
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