/**
 * Dedicated Server Resolver
 *
 * Resolves an environment ID to a dedicated server origin. Control-plane
 * failures deliberately fall back to the shared renderer pool, but malformed
 * identifiers and construction policy fail at the local boundary.
 */
export interface ServerResolverOptions {
    maxEntries?: number;
    maxInflight?: number;
    requestTimeoutMs?: number;
    fetchImpl?: typeof fetch;
    now?: () => number;
}
export declare class ServerResolver {
    private readonly apiEndpointBase;
    private readonly authorizationHeader;
    private readonly cacheTtlMs;
    private readonly maxEntries;
    private readonly maxInflight;
    private readonly requestTimeoutMs;
    private readonly fetchImpl;
    private readonly now;
    private readonly cache;
    private readonly pending;
    private readonly pendingControllers;
    private readonly activeRequests;
    private cleanupTimer;
    private generation;
    private closed;
    private capacityWarningEmitted;
    constructor(apiInternalUrl: string, apiUser: string, apiPass: string, cacheTtlMs?: number, options?: ServerResolverOptions);
    resolve(environmentId: string | undefined): Promise<string | null>;
    close(): void;
    private performLookup;
    private fetchServer;
    private fetchServerWithinDeadline;
    private remember;
    private cleanup;
    private readClock;
    private assertOpen;
    private isAtCapacity;
    private resetCapacityWarningIfAvailable;
}
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