import { ServiceLevelObjective } from '../common';
import { SloControlLoop } from './slo-control-loop';
/**
 * This type of error is thrown by the `SloControlLoop`.
 */
export declare class SloControlLoopError extends Error {
    controlLoop: SloControlLoop;
    cause?: any;
    constructor(controlLoop: SloControlLoop, message: string, cause?: any);
}
/**
 * This type of error is thrown by the `SloControlLoop` if there is an error during the evaluation of an SLO.
 */
export declare class SloEvaluationError extends Error {
    controlLoop: SloControlLoop;
    sloKey: string;
    slo: ServiceLevelObjective<any, any>;
    sloEvaluationError: any;
    constructor(controlLoop: SloControlLoop, sloKey: string, slo: ServiceLevelObjective<any, any>, sloEvaluationError: any, msg?: string);
}
/**
 * This error is thrown if a certain metric cannot be fetched.
 */
export declare class MetricUnavailableError extends Error {
    metricName: string;
    query?: any;
    constructor(metricName: string, query?: any, msg?: string);
}