/// <reference types="koa" />
import { Context, Middleware } from '../../vision/types';
import { PayloadError } from './PayloadError';
import { Vision } from '../../vision/Vision';
export declare class ErrorHandlerMiddleware {
    static errorHandler(): Middleware;
    protected static emitEvent(vision: Vision, status: number, error: PayloadError | null, ctx: Context): Promise<void>;
    protected static log(error: PayloadError, ctx: Context): void;
}