export type CheckStatus = 'up' | 'down';
export type CheckDetails = Record<string, unknown>;
/**
 * Check result is an outcome for a check. It is
 * a little specialized version of classical Result
 * abstraction with error and data
 */
export declare class CheckResult {
    /**
     * Check status
     */
    readonly status: CheckStatus;
    /**
     * Custom attributes (key value) Will
     * be returned to check caller or/and logged
     */
    readonly details: CheckDetails;
    private constructor();
    /**
     * Indicated that check was not successful
     */
    get isError(): boolean;
    /**
     * Creates successful CheckResult
     *
     * @param details Any custom attributes
     * @returns CheckResult
     */
    static up(details: CheckDetails): CheckResult;
    /**
     * Creates failed CheckResult
     *
     * @param details Any custom attributes
     * @returns CheckResult
     */
    static down(details: CheckDetails): CheckResult;
}