//#region src/serialize.d.ts
/**
 * Default request serializer: shallow camelCase → snake_case, drops `undefined`,
 * leaves non-objects unchanged.
 *
 * `additionalFields` entries are merged into the top-level body verbatim.
 * Known route fields win on key collisions.
 */
declare function defaultSerialize(input: unknown): unknown;
//#endregion
export { defaultSerialize };