import { type JsonObject, type JsonValue } from './hub/types/json.js';
interface PassthroughOptions {
    prefix: string;
    keys: readonly string[];
}
export declare function encodeMetadataPassthrough(parameters: JsonObject | undefined, options: PassthroughOptions): Record<string, string> | undefined;
export declare function extractMetadataPassthrough(metadataField: JsonValue | undefined, options: PassthroughOptions): {
    metadata?: JsonObject;
    passthrough?: JsonObject;
};
export {};
