/**
 * Shared utilities used by all entry points (Node, fetch, browser).
 *
 * @remarks
 * Extracted to a single module so that parsing, serialization, URL building,
 * and cookie logic stay consistent across runtimes.
 *
 * @internal
 * @module shared
 */
import type { AptosClientRequest, CookieJarLike } from "./types.js";
/**
 * Build a `URL` from a base string and optional query parameters.
 * `bigint` values are stringified automatically via `String()`.
 * @internal
 */
export declare function buildUrl(base: string, params?: AptosClientRequest["params"]): URL;
/**
 * Serialize a request body to a `BodyInit`-compatible value.
 *
 * - `null` / `undefined` → `undefined` (no body sent)
 * - `Uint8Array` → passed through (valid `ArrayBufferView`/`BodyInit`)
 * - Anything else → `JSON.stringify`
 *
 * @internal
 */
export declare function serializeBody(body: unknown): BodyInit | undefined;
/**
 * Set the `content-type` header to `application/json` when the body is
 * a non-binary, non-null value and no content-type has been set.
 * @internal
 */
export declare function applyJsonContentType(body: unknown, headers: Headers): void;
/**
 * Parse a response body as JSON, returning the raw text when parsing fails.
 *
 * Returning raw text (instead of throwing) preserves backward compatibility
 * with v2, where `got` returned error responses as normal `AptosClientResponse`
 * objects. This lets the caller (e.g., the TS SDK) inspect the status code and
 * handle the error however it chooses.
 *
 * @internal
 */
export declare function parseJsonSafely(res: Response): Promise<any>;
/**
 * Merge cookies from a {@link CookieJarLike} into the request headers.
 * @internal
 */
export declare function applyCookiesToHeaders(headers: Headers, url: URL, jar: CookieJarLike): void;
/**
 * Store any `Set-Cookie` headers from the response in the cookie jar.
 *
 * Includes a defensive check for `Headers.getSetCookie()` availability,
 * since it may be absent in some React Native environments.
 * @internal
 */
export declare function storeResponseCookies(url: URL, headers: Headers, jar: CookieJarLike): void;
/**
 * Convert a `Headers` instance to a plain `Record<string, string | string[]>`.
 *
 * This preserves backward compatibility with aptos-client v2, which
 * returned Node's `IncomingHttpHeaders` (a plain object) from the `got`
 * library. Consumers (e.g., the TS SDK) access headers via bracket
 * notation (`response.headers["x-aptos-cursor"]`), which only works on
 * plain objects — not on `Headers` instances.
 *
 * Multi-value `set-cookie` headers are returned as `string[]` to match
 * Node's `IncomingHttpHeaders` shape and avoid losing cookie boundaries.
 *
 * @internal
 */
export declare function headersToRecord(headers: Headers): Record<string, string | string[]>;
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