/**
 * Anonymous installation identifier.
 *
 * A random UUID persisted once at ~/.vaspera/install-id, used only to count
 * unique installations and active installs in aggregate. It is NOT tied to any
 * user, machine fingerprint, repo, or source code — it is a random value the
 * install generates for itself. See TELEMETRY.md.
 *
 * @module telemetry/install-id
 */
export interface InstallIdentity {
    /** Random anonymous install UUID. */
    installId: string;
    /** True only on the run that first created the id (used for the first-run notice). */
    isFirstRun: boolean;
}
/**
 * Get (or lazily create) the anonymous install id. Idempotent within a process.
 * Degrades to an ephemeral id if the filesystem is not writable, in which case
 * isFirstRun is false so we never repeatedly show the notice or imply a new install.
 */
export declare function getInstallIdentity(): InstallIdentity;
/** Convenience accessor for just the id. */
export declare function getInstallId(): string;
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