import type { IncomingHttpHeaders, IncomingMessage } from 'node:http';
import type { Request as ExpressRequest } from 'express';
type RequestHeaders = Headers | {
    [key: string]: string;
} | Iterable<[string, string]> | IncomingHttpHeaders;
interface BasicRequest {
    headers?: RequestHeaders;
    method?: string;
    url?: string;
}
export type Request = string | (BasicRequest & {
    [key: string]: any;
}) | ExpressRequest | (IncomingMessage & {
    [key: string]: any;
});
interface SerializedRequestHeaders {
    [key: string]: string;
}
interface SerializedRequestRouteParams {
    [key: string]: string;
}
interface SerializedRequestRoute {
    path: string;
    params: SerializedRequestRouteParams;
}
interface SerializedRequest {
    id: string | null;
    method: string;
    url: string;
    headers: SerializedRequestHeaders;
    route?: SerializedRequestRoute;
}
export declare const DEFAULT_INCLUDED_HEADERS: readonly string[];
interface SerializeRequestOptions {
    includeHeaders?: string[];
}
/**
 * Serialize a request object so that it can be consistently logged or output as JSON.
 */
export default function serializeRequest(request: Request, options?: SerializeRequestOptions): SerializedRequest;
export {};
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