/** Convert a Content-Length header to number/undefined. */
export declare function parseContentLengthHeader(header: string | null | undefined): number | undefined;
export type RequestBody = null | Blob | FormData | URLSearchParams | string | ArrayBuffer | undefined;
/** Get the size of a body. */
export declare function getBodySize(body: RequestBody): number | undefined;
export declare const NETWORK_BODY_MAX_SIZE = 150000;
export declare const DEFAULT_NETWORK_HEADERS: string[];
export interface ResolvedNetworkOptions {
    allowUrls: (string | RegExp)[];
    denyUrls: (string | RegExp)[];
    captureBodies: boolean;
    requestHeaders: string[];
    responseHeaders: string[];
}
/**
 * Whether to capture full network details (headers, bodies) for a given URL,
 * based on the allow/deny URL lists.
 */
export declare function shouldCaptureNetworkDetails(url: string | undefined, options: ResolvedNetworkOptions): boolean;
export interface NetworkBody {
    body?: string;
    /** Warnings about the captured body, e.g. truncation or unserializable type. */
    _meta?: {
        warnings: string[];
    };
}
/**
 * Serialize a request/response body to a string, truncated to NETWORK_BODY_MAX_SIZE.
 * Returns undefined if the body is empty/missing; returns a meta warning if unserializable
 * or truncated.
 */
export declare function getBodyString(body: unknown): NetworkBody | undefined;
/**
 * Filter a headers map down to the set explicitly captured (defaults + user-supplied)
 * and strip authorization-like headers. Header name comparison is case-insensitive;
 * the returned keys are lowercased.
 */
export declare function filterHeaders(headers: Record<string, string | null | undefined> | undefined, extraAllowed: string[]): Record<string, string> | undefined;
/** Parse the raw string returned by XMLHttpRequest.getAllResponseHeaders() into a record. */
export declare function parseAllResponseHeaders(raw: string | null | undefined): Record<string, string>;
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