/**
 * Module-level singleton registry for the active IStaffEventEmitter.
 *
 * Holds a single shared emitter instance for the process lifetime. The default
 * is a NoopEventEmitter (zero overhead). Call setStaffEventEmitter() once at
 * startup to install a concrete implementation (e.g. DbStaffEventEmitter).
 * After startup, the emitter should not be replaced in production code.
 *
 * Key exports:
 *   - setStaffEventEmitter()    — install a concrete emitter (call once at startup)
 *   - getStaffEventEmitter()    — retrieve the current emitter
 *   - flushStaffEventEmitter()  — drain pending async writes before shutdown
 *   - resetStaffEventEmitter()  — reset to Noop (test use only)
 */
import { IStaffEventEmitter } from './staffEventEmitter';
/**
 * Set the active Staff event emitter. Called once by the Iranti SDK constructor
 * when a concrete emitter is provided. Must not be called after startup in
 * production — use resetStaffEventEmitter() in tests only.
 */
export declare function setStaffEventEmitter(emitter: IStaffEventEmitter): void;
/**
 * Get the currently active emitter. Returns the NoopEventEmitter if no
 * concrete emitter has been set.
 */
export declare function getStaffEventEmitter(): IStaffEventEmitter;
export declare function flushStaffEventEmitter(): Promise<void>;
/**
 * Reset to NoopEventEmitter. For use in test beforeEach/afterEach only.
 * Do not call in production code.
 */
export declare function resetStaffEventEmitter(): void;
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