review-logging-patterns

SKILL.md

Structured logging for TypeScript/JavaScript with framework-agnostic setup, wide events, and drain adapters.

Supports 12+ frameworks: Nuxt, Next.js, SvelteKit, Nitro, TanStack Start, NestJS, Express, Hono, Fastify, Elysia, Cloudflare Workers, and standalone TypeScript

Detects and refactors console.log spam and unstructured errors into self-documenting wide events with grouped context

Includes drain adapters for Axiom, OTLP, PostHog, Sentry, Better Stack, and file system; supports batching, sampling, and enrichment

Built-in AI SDK integration captures token usage, tool calls, and streaming metrics from Vercel AI SDK automatically

Review logging patterns

Review and improve logging patterns in TypeScript/JavaScript codebases. Transform scattered console.logs into structured wide events and convert generic errors into self-documenting structured errors.

When to Use

Setting up evlog in a new or existing project (any supported framework)

Reviewing code for logging best practices

Converting console.log statements to structured logging

Improving error handling with better context

Configuring log draining, sampling, or enrichment

Quick Reference