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Recipe
DX Metrics Primer
Ship a lightweight developer-experience dashboard that tracks build times, lint errors, and test pass rates across your monorepo — without pulling in observability SaaS.
Why DX Metrics
Slow feedback loops kill velocity. When CI pipelines take 12 minutes and nobody notices until Friday, the team bleeds throughput. A local-first metrics panel surfaces regressions before they compound.
What You'll Build
- ▸A single-page dashboard with three cards: build duration, lint violations, test pass percentage.
- ▸A Node.js script that scrapes ESLint output, Vitest JSON reports, and turbo cache logs.
- ▸JSON file storage — no database, no vendor lock-in.
Stack
Next.js 14App Router
Tailwindstyling
Node.jscollector script
JSONdata store
Prerequisites
You need a monorepo with ESLint flat config, Vitest, and Turborepo (or any task runner that emits timing data). The collector script assumes a standard packages/* layout.