/**
 * PostgreSQL-backed Staff event emitter for Iranti.
 *
 * Persists Staff events to the `staff_events` table via Prisma raw SQL.
 * Handles the table-not-yet-created race by attempting DDL bootstrap on the
 * first `relation does not exist` error, then retrying the insert. Bootstrap
 * is attempted at most once per emitter instance to prevent retry storms.
 *
 * All writes are fire-and-forget: emit() returns immediately and the insert
 * runs in a tracked Promise. Call flush() before process shutdown to drain
 * any in-flight writes.
 *
 * Key export:
 *   - DbStaffEventEmitter  — concrete IStaffEventEmitter backed by staff_events
 */
import { IStaffEventEmitter } from './staffEventEmitter';
export declare class DbStaffEventEmitter implements IStaffEventEmitter {
    private warnedTableMissing;
    private pending;
    private bootstrapAttempted;
    emit(input: Parameters<IStaffEventEmitter['emit']>[0]): void;
    flush(): Promise<void>;
    private insertEvent;
    private executeInsert;
}
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