import { GatewayError, type GatewayModelTarget } from "./types.js";
export declare class GatewayAdmissionError extends GatewayError {
    constructor();
}
export interface GatewayAdmissionLease {
    release(actualTokens?: number): void | Promise<void>;
}
/** Remote implementations must reserve atomically, honor abort, and expire abandoned leases. */
export interface GatewayAdmissionController {
    acquire(input: {
        target: GatewayModelTarget;
        tokens?: number;
        signal?: AbortSignal;
    }): Promise<GatewayAdmissionLease>;
}
export interface GatewayAdmissionOptions {
    maxConcurrent: number;
    requestsPerMinute?: number;
    tokensPerMinute?: number;
    maxQueue?: number;
    queueTimeoutMs?: number;
    maxTargets?: number;
    now?: () => number;
}
export declare const createGatewayAdmissionController: (options: GatewayAdmissionOptions) => GatewayAdmissionController;
//# sourceMappingURL=admission.d.ts.map