import type { ResolvedEntry } from "./stream.js";
import type { RouterOrderingToken } from "./types.js";
/**
 * A candidate entry normalized to a single internal shape, regardless of which
 * of the three accepted `ProviderEntry` forms the user wrote.
 */
import { RouterAttemptObservability } from "./router-attempt-observability.js";
export declare class RouterAttemptAdmission extends RouterAttemptObservability {
    protected releaseCandidateProbe(candidate: ResolvedEntry): void;
    protected releaseCandidateOwnership(candidate: ResolvedEntry): void;
    protected prepareCandidate(candidate: ResolvedEntry): boolean;
    protected acceptAdmission(candidate: ResolvedEntry, inFlight: number | undefined, selectedAt: RouterOrderingToken, phase: "generate" | "stream-open"): inFlight is number;
    protected admitCandidate(candidate: ResolvedEntry, isLast: boolean, signal: AbortSignal | undefined, deadline: number | undefined, selectedAt: RouterOrderingToken, phase: "generate" | "stream-open"): Promise<{
        capacitySkipped: boolean;
        healthSkipped: boolean;
        inFlight?: number;
    }>;
}