/**
 * Returns the SSH directory examined for keys: the `IMQ_SSH_DIR` override
 * (testing / non-standard homes) or `~/.ssh`.
 *
 * @return {string}
 */
export declare function sshDir(): string;
/**
 * Detects whether the current machine user has any SSH keys set up, by looking
 * for a conventional private key (id_rsa, id_ed25519, …) or any public
 * (`*.pub`) key in the user's `.ssh` directory. Purely filesystem-based: it
 * makes no network calls and spawns no processes, so it is fast and safe to
 * call during interactive setup.
 *
 * @param {string} [dir] - ssh directory to inspect (defaults to `sshDir()`)
 * @return {boolean}
 */
export declare function hasSshKeys(dir?: string): boolean;
/**
 * Chooses the git transport to default to for pushing new services: `ssh` when
 * the user has SSH keys on this machine, otherwise `https`. This mirrors what
 * the user is most likely already able to authenticate with.
 *
 * @param {string} [dir] - ssh directory to inspect (defaults to `sshDir()`)
 * @return {'ssh' | 'https'}
 */
export declare function detectGitProtocol(dir?: string): 'ssh' | 'https';