I used all four in real projects. One wrecked a monorepo at 3am. Another saved my ass in production. Here's the unfiltered truth about every major package manager in 2025.
The CI was green. The cache wasn't working. Forty minutes per build run because pnpm couldn't find the store in GitHub Actions. Here are the logs, the before/after YAML, and the exact configuration that brought it down to 8 minutes.
The install-time benchmark I published earlier didn't capture the real cost of pnpm workspaces in CI: silent cache invalidation, dependency hoisting that breaks in App Router, and a specific edge case that can take down your Railway pipeline. Here's what I failed to measure.
I ran all three package managers on the same Next.js 16 + strict TypeScript monorepo with Shadcn/ui and Radix UI. pnpm wins on disk and CI — but there's a real compatibility cost the migration guides never tell you about.
Comparing Themis with Web Crypto API is not academic: it changes bundle size, threat model, key rotation, and where each responsibility should live. The tradeoffs are less obvious than they look.
Functors, monads, and pipe() can look pristine in small examples, but real Next.js flows with Server Actions and Prisma expose readability, bundle, and onboarding costs worth measuring before adopting the full pattern.
navigator.clipboard.writeText looks trivial until your app silently breaks in production with zero visible error. I found 4 cases the docs never mention: insecure context, lost focus, revoked permissions on iOS, and React timing. Here are the real patterns with copyable code.
npm audit tells you you're safe. I stress-tested that claim with real methodology against my production dependencies and found three attack vectors the scanner doesn't even register. The Node ecosystem has a structural problem that green badges keep hidden.
A HN thread with 398 points blew up the debate again: is Docker Compose in production legitimate or an antipattern? I ran my real stack on Railway for 30 days and brought actual numbers. Spoiler: it's not embarrassing if you know exactly what it costs you.
32 years in the dev trenches. Here I write what I learned, what I broke, and what nobody tells you in the tutorials.
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