export type JsonBodyResult = {
    ok: true;
    value: unknown;
} | {
    ok: false;
    error: string;
};
export type JsonBodyOptions = {
    /** Applied to DIAGNOSTIC text only — the raw body snippet, a body-read
     *  exception message, and the displayed final URL — BEFORE whitespace
     *  normalization and truncation, so a sensitive value containing whitespace
     *  or spanning the snippet cutoff cannot survive into an error message.
     *  Never applied to text handed to JSON.parse: protocol data is parsed from
     *  the original response text unchanged. */
    sanitizeDiagnostic?: (raw: string) => string;
};
export declare function readJsonBody(response: Response, request: {
    method: string;
    url: string;
}, options?: JsonBodyOptions): Promise<JsonBodyResult>;