import type { CommandResponse } from '../../client/index.js';
/** Resource whose option catalog the server serves. */
export declare const OptionsScope: {
    readonly Topic: 1;
    readonly Stream: 2;
    readonly User: 3;
};
export type OptionsScope = typeof OptionsScope[keyof typeof OptionsScope];
/**
 * One catalog entry: the key a create command accepts, the kind the server
 * encodes its default under, that default, and what the option does.
 *
 * `kind` is this key's canonical kind: what the server encodes its default
 * under, and what a value set at create is stored as whatever kind it was sent
 * in, since create admission re-encodes the block from its own parse. An update
 * stores the client's bytes verbatim and is the exception.
 */
export type OptionSpec = {
    key: string;
    kind: number;
    defaultValue: Buffer;
    description: string;
};
export type DescribeOptions = {
    scope: OptionsScope;
};
export declare const DESCRIBE_OPTIONS: {
    code: number;
    serialize: ({ scope }: DescribeOptions) => Buffer<ArrayBuffer>;
    deserialize: (r: CommandResponse) => OptionSpec[];
};
export declare const describeOptions: (getClient: import("../../client/client.type.js").ClientProvider) => (arg: DescribeOptions) => Promise<OptionSpec[]>;
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