Senior LevelVue JS
How do you build serverless backend APIs and middleware using Nuxt 3 Nitro server routes?
❓ Interview Prompt: Explain Nuxt 3 /server/api routes, Nitro event handlers (defineEventHandler), query parsing, and serverless deployment targets.
Nuxt 3 includes a built-in server engine (Nitro) that allows writing full-stack backend API routes directly inside the '/server/api/' directory.
How Nitro Server Routes Work:
Files inside '/server/api/users.ts' export 'defineEventHandler(async (event) => ...)':
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Nitro compiles these routes into lightweight serverless functions compatible with AWS Lambda, Cloudflare Workers, and Node.js.
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Provides built-in utility helpers ('getQuery(event)', 'readBody(event)', 'setCookie(event)').
Code Implementation Example
typescript
// server/api/users/[id].ts — Nuxt 3 Nitro Server Route
export default defineEventHandler(async (event) => {
// Extract route parameters and query params
const id = getRouterParam(event, 'id');
const query = getQuery(event);
// Query database...
return { id, name: 'Alice', role: 'admin' };
});💡Building serverless API endpoints in Nuxt 3 using Nitro defineEventHandler.
🎯 Interview Key Takeaway
Use Nuxt 3 /server/api/ directory with defineEventHandler to build full-stack serverless API endpoints.
#Nuxt 3#Nitro#Server Routes#Senior
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