How Nitro works?
summary
Nitro is the server engine that builds and runs Nuxt apps: a Rollup-based builder uses Rollup that produces a tiny deployable output (about output ~170KB in examples) and a runtime with H3 handlers, streaming responses, background tasks and an agnostic storage layer that storage defaults to in-memory but can mount file or remote backends. It auto-generates platform configs, provides deployment presets that auto-detect CI, trims node_modules via Vercel NFD, and reports sub-100ms dev reloads and portable outputs that work across Cloudflare, Knop and other runtimes.
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