export declare class CircuitBreaker {
    private readonly failureThreshold;
    private readonly timeout;
    private readonly monitoringPeriod;
    private failures;
    private lastFailTime;
    private state;
    constructor(failureThreshold?: number, timeout?: number, // 1 minute
    monitoringPeriod?: number);
    execute<T>(operation: () => Promise<T>): Promise<T>;
    private onSuccess;
    private onFailure;
    getState(): string;
    getFailures(): number;
}
export declare const circuitBreakers: {
    external: CircuitBreaker;
    github: CircuitBreaker;
};
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