/**
 * Node-only decoder for the request bodies produced by `packages/browser/src/request.ts`'s `encodePostData`.
 *
 * Supports:
 * - no compression: `data=<urlencoded-json>`
 * - `compression=base64`: `data=<base64(json)>` (still urlencoded)
 * - `compression=gzip-js`: raw gzip bytes in the body
 *
 * Lifted from here: https://github.com/PostHog/posthog-js/blob/7be7982848185276527d9222413187b876527dfe/packages/browser/functional_tests/mock-server.ts#L16
 */
export declare const decodePostData: (body: unknown, url: string) => unknown;
/**
 * Attempts to re-encode the data into the same format as the original request.
 */
export declare const encodePostData: (data: unknown, url: string) => {
    body: Buffer | string;
    headers: Record<string, string>;
};
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