Logging

Request logging and dev process output in Dex.

Pretty Logger

Dex provides dexPrettyLogger() as an Elysia plugin to format incoming HTTP requests and errors.

import { dexPrettyLogger } from '@dex/server'

app.use(dexPrettyLogger({
  ignore: (pathname) => pathname.startsWith('/__dev'),
  includeQuery: false
}))

Log Format

Requests are logged upon response completion using the following structure:

[timestamp] LEVEL METHOD /path status durationMs

Example request output:

[2026-09-21T12:00:00.000Z] INFO GET / 200 12.3ms
[2026-09-21T12:00:00.120Z] INFO GET /about 200 8.1ms
[2026-09-21T12:00:00.450Z] INFO GET /api/users 304 4.0ms

When an unhandled error occurs, dexPrettyLogger logs the error prefix and status code, followed by the error stack trace:

[2026-09-21T12:00:01.000Z] ERROR POST /api/submit 500
Error: Database connection failed
    at ...

Colors and Formatting

• Development (TTY): Timestamp is dimmed, levels (INFO in cyan, ERROR in red) and status codes (2xx/3xx green, 4xx yellow, 5xx red) are colorized with ANSI escape codes.
• Production / Non-TTY: ANSI colors are disabled automatically when NODE_ENV=production, when running non-interactively, or when NO_COLOR is set.

Options

Dev Process Logs

During development, the Dex CLI watcher outputs status messages prefixed by component:

[router] ✅ Routes generated (42 routes)
[styles] 🎨 Styles compiled
[client] 📦 Client bundled (234KB)
[server] 🚀 Dev server ready

See Also

• Server Exports — Server helpers API
• Production Server — Production setup