import { AuthTransportScope } from '../types/errors.js';
export type { AuthTransportScope } from '../types/errors.js';
export type AuthServiceHealth = {
    status: "unknown";
} | {
    lastSuccessAt: number;
    lastSuccessScope: AuthTransportScope;
    status: "healthy";
} | {
    failures: string[];
    lastSuccessAt?: number;
    status: "degraded";
} | {
    scope: AuthTransportScope;
    since: number;
    status: "unreachable";
};
export type AuthOperationKind = "success" | "failure";
export declare function isCanonicalAuthTransportScope(scope: AuthTransportScope): boolean;
export declare function getAuthServiceHealth(): AuthServiceHealth;
export declare function resetAuthServiceHealth(): void;
export declare function recordAuthSuccess(scope: AuthTransportScope, at?: number): AuthServiceHealth;
export declare function recordAuthFailure(scope: AuthTransportScope, code?: string, at?: number): AuthServiceHealth;
/**
 * Global Auth-service unreachable copy is allowed only for canonical
 * identity/session transport when no later canonical success has landed.
 */
export declare function allowsAuthConnectivityCopy(scope: AuthTransportScope | undefined, snapshot?: AuthServiceHealth): boolean;