/**
 * Shared logging-fetch wrapper.
 *
 * Wraps `createProxyFetch()` and logs every non-2xx upstream response with:
 *   - provider label
 *   - HTTP status code
 *   - URL with embedded credentials / signed query params masked
 *     (via `maskProxyUrl`)
 *   - request body size (string-body only — multipart/streamed bodies
 *     report 0)
 *
 * Response bodies are NOT logged by default (they can echo prompt fragments,
 * tool payloads, or echoed auth tokens). Set `NEUROLINK_DEBUG_HTTP=1` to opt
 * into body logging — and even then bodies are run through `sanitizeForLog`
 * to redact `Bearer …`, `sk-…`, `Token …`, and the other 11 token formats
 * covered by `logSanitize.SECRET_PATTERN`.
 *
 * Previously this same function was hand-rolled in 11 provider files
 * (cohere, xai, groq, togetherAi, fireworks, perplexity, cloudflare,
 * llamaCpp, lmStudio, nvidiaNim, deepseek) with subtly different bodies.
 * Extracting it kills the drift risk and gives a single place to harden.
 *
 * @module utils/loggingFetch
 */
/**
 * Construct a fetch-compatible function that logs upstream non-OK responses
 * under the given provider label.
 */
export declare function createLoggingFetch(provider: string): typeof fetch;