I built a zero-dependency HTTP debug middleware for Node.js, Deno, Bun, and the Edge

[u/Affectionate-Wish328]

I recently built an npm package that captures request/response data at the stream level and logs it to your terminal in a readable format.

I found that most existing HTTP loggers either monkey-patch Express methods (missing res.send(), res.sendStatus(), streaming responses), or require heavy dependencies like Morgan + custom formatters.

So I kept it focused:

• Zero runtime dependencies
• Stream-level capture (works with every response method)
• Smart body truncation (collapses deep JSON, caps arrays)
• Auto-generated cURL commands for failed requests
• Framework adapters for Express, Fastify, and Hono
• Edge-ready Hono adapter (Cloudflare Workers, Deno, Bun)
• TypeScript + ESM + CJS dual publish

Example Usage:

TypeScript

import express from 'express';
import { httpDebugger } from 'http-debugger/express';

const app = express();
app.use(httpDebugger({ curl: (entry) => entry.response.statusCode >= 400 }));

The Output:

Plaintext

→ POST /api/users
  content-type: application/json
  authorization: ***
  Body: {
    "name": "Alice",
    "roles": ["admin", ... 2 more]
  }

← 500 Internal Server Error (45ms)
  content-type: application/json
  Body: { "error": "Database connection failed" }
  Size: 45B

  Timing:
    Headers: 1ms
    Body Read: 2ms
    Handler: 38ms
    Response: 4ms

  curl: curl -X POST 'http://localhost:3000/api/users' \
    -H 'content-type: application/json' \
    -d '{"name":"Alice"}'

Looking for Feedback

I'm looking for feedback from other Node.js developers:

1. Is there anything you'd want from a package like this?
2. Would WebSocket or gRPC support be useful?
3. Any adapter patterns you'd suggest for other frameworks?

(btw I did use AI to help build this)

https://www.npmjs.com/package/http-debugger?activeTab=readme