import type { FeatureFlagsRuntimeClient, RuntimeClientOptions } from '@workos-inc/node';
export declare const FEATURE_FLAGS_API_KEY_REQUIRED: string;
/**
 * Returns a shared WorkOS Feature Flags runtime client.
 *
 * The runtime client keeps feature flag state in sync in the background, so it
 * should be created once per server process instead of once per request.
 * Options are only used when the client is created for the first time.
 *
 * Requires a WorkOS API key (`WORKOS_API_KEY` or `configure({ apiKey })`).
 * Throws in public-client (keyless) mode.
 */
export declare const getFeatureFlagsRuntimeClient: (options?: RuntimeClientOptions | undefined) => FeatureFlagsRuntimeClient;