import { Processor, ExecutionContext } from '../lib';
import { Next } from 'koa';
export declare abstract class Guard extends Processor {
    id: string;
    private _except?;
    constructor(except?: string | RegExp | ((execContext: ExecutionContext) => Promise<boolean>));
    process(execCtx: ExecutionContext, next: Next): Promise<any>;
    abstract validate(execCtx: ExecutionContext): Promise<boolean>;
}