review-logging-patterns

Replace scattered console.log calls with a request-scoped logger using useLogger() and accumulate context via log.set(), emitting one wide event per request. The skill provides before/after transformation examples for handlers, services, and background jobs.

Run npx @evlog/cli init --dry-run --yes to preview the generated setup, then apply it with flags for service name, drains, and enrichers. Manual setup guides cover createEvlog() for Next.js and the evlog/nuxt module for Nuxt.

A wide event is a single comprehensive log entry capturing all context for one logical operation, such as an HTTP request, instead of many scattered log lines. It typically includes user, business context, and outcome fields emitted once at request end.

Yes, evlog provides dedicated middleware for Express, Fastify, Hono, Elysia, NestJS, and React Router, plus integrations for Cloudflare Workers, AWS Lambda, and Astro. Each exposes a request-scoped logger via useLogger() or request context.

Use evlog map --min-score 80 as an absolute gate or evlog map --baseline to fail CI when a PR regresses per-entry-point coverage compared to the committed evlog.map.json baseline. New uninstrumented routes are reported without failing the build.

createError produces structured errors with message, why, fix, link, and cause fields, making failures self-documenting in logs and HTTP responses. Generic Error objects lack root-cause context and actionable remediation guidance.