/**
 * Persistent device identifier for telemetry correlation.
 *
 * Stored at ~/.workos/device-id as a plain UTF-8 UUID string. Not a secret
 * — this is a convenience identifier that survives keyring unavailability.
 * Any IO failure falls through to a one-shot UUID for the current session.
 */
/**
 * Asynchronously resolve (and lazily create) the device id without blocking
 * the event loop. Memoized: the first call performs the IO, concurrent and
 * later callers await the same promise. Populates the shared cache that the
 * synchronous getDeviceId() reads, so prewarming this at startup keeps the
 * synchronous telemetry path off blocking fs IO. Never rejects.
 */
export declare function loadDeviceId(): Promise<string>;
/**
 * Synchronous accessor for the telemetry event path. Returns the prewarmed
 * value when loadDeviceId() has run; otherwise falls back to a one-time
 * synchronous read of the same file (returning the persisted id, so the value
 * never diverges from the async path). On any IO failure, returns a one-shot
 * UUID scoped to the current process — never throws.
 */
export declare function getDeviceId(): string;
/** Test seam — resets the in-memory cache between test cases. */
export declare function __resetDeviceIdCache(): void;