Deploying to Vercel in Astro - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to initialize a new Astro project for deployment.

Astro

npm init astro@latest [1]

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

A--skip-install

B--yes

C--force

D--help

Attempts:

3 left

💡 Hint

Common Mistakes

Using '--force' which forces actions but is not needed here.

Using '--skip-install' which skips installing dependencies.

Using '--help' which only shows help information.

Using '--yes' initializes the project with default settings quickly.

2fill in blank

medium

Complete the command to install the Vercel CLI globally.

Astro

npm install -g [1]

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

Aastro

Bfirebase-tools

Cnetlify-cli

Dvercel

Attempts:

3 left

💡 Hint

Common Mistakes

Installing 'astro' which is the framework, not the deployment CLI.

Installing 'netlify-cli' or 'firebase-tools' which are for other platforms.

The 'vercel' package is the official CLI for deploying to Vercel.

3fill in blank

hard

Fix the error in the deployment command to correctly deploy the project.

Astro

vercel [1]

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

A--prod

B--production

C--preview

D--deploy

Attempts:

3 left

💡 Hint

Common Mistakes

Using '--production' which is not recognized by Vercel CLI.

Using '--preview' which relates to preview deployments.

Using '--deploy' which is not a valid flag.

The correct flag to deploy to production is '--prod'.

4fill in blank

hard

Fill both blanks to configure the Astro project for Vercel deployment in the config file.

Astro

export default {
  adapter: [1](),
  vite: {
    build: {
      target: '[2]'
    }
  }
}

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

Avercel

BnetlifyAdapter

CES2020

Desnext

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'netlifyAdapter' which is for a different platform.

Using 'esnext' which may cause compatibility issues.

Use 'vercel()' for Vercel and set build target to 'ES2020' for compatibility.

5fill in blank

hard

Fill all three blanks to create a deployment script in package.json for Vercel.

Astro

"scripts": {
  "deploy": "[1] && [2] --prod [3]"
}

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

Anpm run build

Bvercel

C--confirm

Dastro build

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'npm run build' instead of 'astro build' which is the Astro build command.

Omitting '--confirm' which causes interactive prompts.

First build with 'astro build', then deploy with 'vercel --prod --confirm' to skip prompts.

Practice

1. What is the main benefit of deploying an Astro site to Vercel?

easy

A. It makes your site live on the internet quickly.

B. It requires manual server setup and configuration.

C. It disables automatic SSL certificates.

D. It only works with static HTML files.

Solution

1. Step 1: Understand Vercel's purpose

   Vercel is a platform that hosts websites and makes them accessible online quickly.

2. Step 2: Identify the main benefit for Astro sites

   Deploying to Vercel allows your Astro site to be live on the internet fast without manual server setup.

3. Final Answer:

   It makes your site live on the internet quickly. -> Option A

4. Quick Check:

   Deploying to Vercel = Quick live site [OK]

Hint: Remember: Vercel makes sites live fast and easy [OK]

Common Mistakes:

• Thinking Vercel requires manual server setup
• Believing SSL is disabled by default
• Assuming Vercel only supports static HTML

2. Which file should you include in your Astro project to configure Vercel deployment settings?

easy

A. package-lock.json

B. astro.config.js

C. vercel.json

D. index.html

Solution

1. Step 1: Identify Vercel configuration file

   Vercel uses a special file named vercel.json to customize deployment settings.

2. Step 2: Differentiate from other files

   astro.config.js configures Astro itself, package-lock.json manages dependencies, and index.html is a page file.

3. Final Answer:

   vercel.json -> Option C

4. Quick Check:

   Vercel config file = vercel.json [OK]

Hint: Vercel config always uses vercel.json file [OK]

Common Mistakes:

• Confusing Astro config with Vercel config
• Using package-lock.json for deployment settings
• Thinking index.html controls deployment

3. Given this vercel.json snippet:

{
  "builds": [{ "src": "package.json", "use": "@vercel/node" }],
  "routes": [{ "src": "/api/(.*)", "dest": "/api/index.js" }]
}

What does this configuration do when deployed?

medium

A. It builds a Node.js serverless function from package.json and routes API calls to /api/index.js.

B. It serves static files only and ignores API routes.

C. It causes a deployment error due to invalid JSON syntax.

D. It disables all API routes and only serves the homepage.

Solution

1. Step 1: Analyze the builds section

   The build uses @vercel/node with package.json, indicating a Node.js serverless function build.

2. Step 2: Analyze the routes section

   Routes matching /api/(.*) are sent to /api/index.js, directing API calls properly.

3. Final Answer:

   It builds a Node.js serverless function from package.json and routes API calls to /api/index.js. -> Option A

4. Quick Check:

   Build + API routing = Node.js serverless function [OK]

Hint: Look for builds and routes keys to understand deployment behavior [OK]

Common Mistakes:

• Assuming static files only without API support
• Thinking JSON syntax is invalid here
• Believing API routes are disabled

4. You deployed your Astro site to Vercel but get a 404 error on all pages. What is the most likely cause?

medium

A. You used an unsupported Node.js version in your project.

B. You forgot to set the build command in Vercel settings.

C. You did not connect your Git repository to Vercel.

D. Your vercel.json file has a syntax error.

Solution

1. Step 1: Understand 404 error cause on Vercel

   A 404 on all pages usually means Vercel did not build the site correctly or serve the pages.

2. Step 2: Check build command setting

   If the build command is missing, Vercel cannot build the site, causing 404 errors.

3. Final Answer:

   You forgot to set the build command in Vercel settings. -> Option B

4. Quick Check:

   Missing build command = 404 error [OK]

Hint: Always set build command in Vercel for Astro projects [OK]

Common Mistakes:

• Assuming syntax error causes 404 instead of build failure
• Thinking Git connection alone fixes 404
• Blaming Node.js version without checking build

5. You want to deploy an Astro site with server-side rendering (SSR) on Vercel. Which step is essential to ensure SSR works correctly?

hard

A. Disable all API routes in vercel.json.

B. Only deploy static files without any server code.

C. Use a custom domain without connecting Git repository.

D. Set the output property to server in astro.config.mjs and use a compatible adapter.

Solution

1. Step 1: Understand SSR requirement in Astro

   SSR requires Astro to output server code, not just static files.

2. Step 2: Configure Astro for SSR deployment

   Setting output: 'server' in astro.config.mjs and using a Vercel adapter enables SSR.

3. Final Answer:

   Set the output property to server in astro.config.mjs and use a compatible adapter. -> Option D

4. Quick Check:

   SSR needs server output and adapter [OK]

Hint: SSR needs output: 'server' and adapter in config [OK]

Common Mistakes:

• Deploying only static files for SSR
• Disabling API routes unnecessarily
• Ignoring Git connection for deployment