declare function cacheFile(): string;
/**
 * Whether it is worth asking npm at all.
 *
 * `npx` and friends resolve the latest version on every run, so telling those
 * users to update is noise — the notice is for global and project-local
 * installs.
 *
 * Only `npm_config_user_agent` and `npm_execpath` used to be consulted, and
 * `bunx` sets neither. So `bunx --bun bna-ui init` — the documented way to run
 * this under bun — ended every scaffold with a banner telling the user to
 * `npm install -g bna-ui@latest`, which was both pointless and the wrong
 * package manager. `process.argv[1]` is the signal that actually survives:
 * every one of these runners executes the CLI out of a path it names.
 */
declare function shouldCheck(): boolean;
/** `1.2.10` > `1.2.9`, without pulling in semver. */
declare function isNewer(latest: string, current: string): boolean;
/**
 * Resolves the newest published version, or null.
 *
 * Separated from the printing so a caller can await it concurrently with the
 * command itself and print afterwards.
 */
export declare function checkForUpdate(currentVersion: string): Promise<string | null>;
/** Printed after the command's own output, never before it. */
export declare function reportUpdate(current: string, latest: string): void;
/** Exposed for tests. */
export declare const __internals: {
    isNewer: typeof isNewer;
    shouldCheck: typeof shouldCheck;
    cacheFile: typeof cacheFile;
};
export {};