/**
 * Selects a named authorization provider for each request.
 *
 * @packageDocumentation
 */
import type { Authenticator, AuthorizationOptions, Provider } from './provider.js';
/** Selects exactly one named authorization provider for each RPC. */
export declare class OneOfProvider implements Provider {
    private readonly providers;
    /** Null entries allow explicitly selected requests without authorization. */
    constructor(providers: Readonly<Record<string, Provider | null>>);
    /** Selects the provider named by options.selector; a null entry skips authorization. */
    authenticator(options?: AuthorizationOptions): Authenticator;
    /** Closes each distinct provider and rejects with AggregateError if any close fails. */
    close(graceMs?: number): Promise<void>;
}
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