Node adapter deployment in Svelte - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What happens when you run a SvelteKit app with the Node adapter?

You have built a SvelteKit app and configured it to use the Node adapter. What is the expected behavior when you run node build/index.js?

A The app runs a serverless function on a cloud platform automatically.

B The app compiles to static HTML files only, with no server running.

C The app starts a Node.js server that serves your SvelteKit pages and endpoints.

D The app fails to start because the Node adapter is not compatible with SvelteKit.

💡 Hint

Think about what the Node adapter is designed to do in SvelteKit.

The Node adapter builds your SvelteKit app into a Node.js server that you can run with node build/index.js. It serves your pages and API endpoints dynamically.

📝 Syntax

intermediate

Which configuration snippet correctly sets up the Node adapter in SvelteKit?

You want to deploy your SvelteKit app using the Node adapter. Which svelte.config.js snippet is correct?

A

import adapter from '@sveltejs/adapter-node';

export default {
  kit: {
    adapter: adapter({})
  }
};

B

import nodeAdapter from '@sveltejs/adapter-node';

export default {
  kit: {
    adapter: nodeAdapter
  }
};

C

import adapter from '@sveltejs/adapter-node';

export default {
  kit: {
    adapter: adapter
  }
};

D

import adapter from '@sveltejs/adapter-node';

export default {
  kit: {
    adapter: adapter()
  }
};

💡 Hint

The adapter function must be called to create the adapter instance.

The Node adapter is a function that you must call, optionally with options, to create the adapter instance. So adapter({}) is correct.

🔧 Debug

advanced

Why does the SvelteKit app fail to start after deploying with the Node adapter?

You deployed your SvelteKit app with the Node adapter and ran node build/index.js. The server crashes with the error: Cannot find module 'polka'. What is the most likely cause?

A You forgot to run <code>npm install</code> to install dependencies before running the build.

B The Node adapter does not support Polka, so this error is unrelated.

C The build output is missing because you did not run <code>npm run build</code> before <code>node build/index.js</code>.

D The Node adapter requires Polka to be installed manually, but it is missing.

💡 Hint

Check if the adapter requires any extra dependencies.

The Node adapter uses Polka internally, so you must have Polka installed in your project dependencies. Missing it causes this error.

❓ state_output

advanced

What is the effect of setting out option in the Node adapter configuration?

Consider this configuration snippet:

adapter({ out: 'custom_build' })

What happens when you run npm run build?

A The build files are output to the <code>custom_build</code> folder instead of the default <code>build</code> folder.

B The app will fail to build because <code>out</code> is not a valid option for the Node adapter.

C The build output folder remains <code>build</code>, but a <code>custom_build</code> folder is also created.

D The <code>out</code> option changes the server port to <code>custom_build</code>.

💡 Hint

The out option controls the output folder location.

The out option tells the Node adapter where to put the build files. Setting it to custom_build changes the output folder accordingly.

🧠 Conceptual

expert

Why choose the Node adapter over the Static adapter for deployment?

You want to deploy a SvelteKit app that has dynamic server-side logic and API endpoints. Why is the Node adapter the better choice compared to the Static adapter?

A Because the Node adapter produces smaller build sizes than the Static adapter.

B Because the Node adapter supports dynamic server-side rendering and API routes, while the Static adapter only generates static files.

C Because the Node adapter automatically deploys to serverless platforms, unlike the Static adapter.

D Because the Static adapter requires a Node.js server to run, but the Node adapter does not.

💡 Hint

Think about whether your app needs server-side code running at runtime.

The Node adapter creates a Node.js server that can run dynamic code and API endpoints. The Static adapter only generates static HTML and assets, so it cannot handle server-side logic.