Vercel deployment (default) in NextJS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to deploy a Next.js app by running the correct command in the terminal.

NextJS

Run the command: npx [1]

Drag options to blanks, or click blank then click option'

Anpm

Bnext

Cvercel

Dnode

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'next' instead of 'vercel' to deploy.

Trying to run 'npm' or 'node' for deployment.

Use npx vercel to deploy your Next.js app to Vercel easily.

2fill in blank

medium

Complete the code to import the Vercel CLI package in a Node.js script.

NextJS

import [1] from 'vercel';

Drag options to blanks, or click blank then click option'

AVercelClient

Bvercel

CVercel

Ddeploy

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase 'Vercel' which is not the default import.

Using unrelated names like 'deploy'.

The Vercel CLI package is imported as vercel by default.

3fill in blank

hard

Fix the error in the deployment script by choosing the correct environment variable name for the Vercel token.

NextJS

const token = process.env.[1];

Drag options to blanks, or click blank then click option'

AVERCEL_TOKEN

BVERCEL_API_KEY

CAPI_TOKEN

DVERCEL_SECRET

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'VERCEL_API_KEY' which is incorrect.

Using generic names like 'API_TOKEN'.

The correct environment variable for Vercel token is VERCEL_TOKEN.

4fill in blank

hard

Fill both blanks to configure the Next.js app for Vercel deployment with the correct build command and output directory.

NextJS

{
  "builds": [
    { "src": "package.json", "use": "@vercel/[1]" }
  ],
  "outputDirectory": "[2]"
}

Drag options to blanks, or click blank then click option'

Anext

Bdist

Cbuild

Dout

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'build' instead of 'next' for the build tool.

Using 'dist' instead of 'out' for output directory.

Use @vercel/next as the build tool and out as the output directory for static export.

5fill in blank

hard

Fill all three blanks to create a Next.js API route that returns a JSON response confirming deployment.

NextJS

export default function handler(req, res) {
  res.status([1]).json({ message: '[2] deployed successfully on [3]!' });
}

Drag options to blanks, or click blank then click option'

A200

B404

CVercel

DNext.js

Attempts:

3 left

💡 Hint

Common Mistakes

Using status code 404 which means not found.

Swapping 'Next.js' and 'Vercel' in the message.

The status code 200 means success. The message uses 'Next.js' and 'Vercel' to confirm deployment.

Practice

1. What is the main purpose of deploying a Next.js app on Vercel using the default settings?

easy

A. To create a backup of your app files

B. To run the app only on your local machine

C. To convert the app into a mobile application

D. To make the app live on the internet with minimal setup

Solution

1. Step 1: Understand Vercel deployment purpose

   Vercel deployment is designed to host your Next.js app online so others can access it.

2. Step 2: Recognize default deployment behavior

   Using default settings, Vercel automatically builds and hosts your app live on the internet.

3. Final Answer:

   To make the app live on the internet with minimal setup -> Option D

4. Quick Check:

   Vercel deployment = live app hosting [OK]

Hint: Vercel default deploy means live app online quickly [OK]

Common Mistakes:

• Thinking deployment only runs locally
• Confusing deployment with app backup
• Assuming deployment converts app to mobile

2. Which command correctly deploys a Next.js app to Vercel using the CLI with default settings?

easy

A. vercel deploy --prod

B. vercel

C. vercel --prod

D. deploy vercel

Solution

1. Step 1: Recall Vercel CLI default deploy command

   The basic command to deploy is simply vercel, which starts the deployment process.

2. Step 2: Understand optional flags

   While --prod deploys to production, the default deploy command without flags is just vercel.

3. Final Answer:

   vercel -> Option B

4. Quick Check:

   Default deploy command = vercel [OK]

Hint: Use just 'vercel' to deploy with defaults [OK]

Common Mistakes:

• Adding unnecessary flags like --prod by default
• Using wrong command order like 'deploy vercel'
• Confusing 'vercel --prod' as default

3. After running vercel to deploy your Next.js app, what will you see in the terminal if the deployment is successful?

medium

A. A URL link where your app is live

B. An error message about missing files

C. A prompt to install Next.js

D. A message saying deployment is disabled

Solution

1. Step 1: Understand Vercel deployment output

   When deployment succeeds, Vercel shows a URL link to access your live app.

2. Step 2: Identify success vs error messages

   Error messages or prompts indicate failure or missing setup, not success.

3. Final Answer:

   A URL link where your app is live -> Option A

4. Quick Check:

   Successful deploy shows live app URL [OK]

Hint: Look for live URL in terminal after deploy [OK]

Common Mistakes:

• Expecting no output after deploy
• Confusing error messages as success
• Thinking deployment disables app

4. You ran vercel but your app fails to deploy with a build error. What is the most likely cause?

medium

A. Your internet connection is too fast

B. You forgot to install Vercel CLI globally

C. Missing package.json or build scripts in your project

D. You used the wrong terminal emulator

Solution

1. Step 1: Identify build error causes in Vercel

   Build errors usually happen if essential files like package.json or build scripts are missing.

2. Step 2: Rule out unrelated causes

   Not installing CLI prevents running commands, but here command ran. Internet speed or terminal choice doesn't cause build errors.

3. Final Answer:

   Missing package.json or build scripts in your project -> Option C

4. Quick Check:

   Build error = missing config files [OK]

Hint: Check package.json and build scripts if build fails [OK]

Common Mistakes:

• Blaming internet speed for build errors
• Assuming CLI install issues cause build errors
• Thinking terminal type affects build

5. You want to deploy a Next.js app on Vercel with default settings but exclude a folder named tests from the deployment. How can you achieve this?

hard

A. Add tests/ to a .vercelignore file in your project root

B. Rename the folder to _tests so Vercel ignores it automatically

C. Delete the tests folder before deploying

D. Use a CLI flag --ignore tests when running vercel

Solution

1. Step 1: Understand how to exclude files/folders in Vercel

   Vercel supports a .vercelignore file to specify files or folders to skip during deployment.

2. Step 2: Apply exclusion for the tests folder

   Adding tests/ line in .vercelignore tells Vercel to ignore that folder automatically.

3. Final Answer:

   Add tests/ to a .vercelignore file in your project root -> Option A

4. Quick Check:

   Use .vercelignore to exclude folders [OK]

Hint: Use .vercelignore file to exclude folders [OK]

Common Mistakes:

• Renaming folders expecting auto-ignore
• Deleting folders instead of ignoring
• Using non-existent CLI flags to ignore