How to Fix the Module Not Found: Can’t Resolve ‘web-vitals’ Error

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If you’re coding and see an error message saying, “Module not found: Can’t resolve ‘web-vitals’,” don’t panic! It might sound complicated, but this issue is pretty easy to solve. Let me break it down step-by-step in a way that even a 15-year-old can understand.

What Does This Error Mean?

Imagine you’re building a project, like stacking Lego bricks to create a house. Now, think of the web-vitals module as one of those important bricks you need to finish the project. If it’s missing, your house (or in this case, your app) can’t be completed.

When you see this error, it simply means that your project can’t find the web-vitals package that it needs to run properly.

Why Does This Happen?

There are a few common reasons why this error pops up:

  1. You Haven’t Installed web-vitals: Sometimes, when starting a project, some packages aren’t installed automatically. web-vitals might be one of them.
  2. Something Went Wrong During Installation: If you already tried installing it, the installation might have failed.
  3. The Package Is Missing from node_modules: The node_modules folder (where all your project’s dependencies live) might not contain web-vitals.
  4. Spelling Errors in the Import Statement: If you accidentally typed webVitals or something similar instead of web-vitals, the project won’t recognize it.

How to Fix It: Step-by-Step Guide

Here’s how you can fix the error in no time:

1. Check if web-vitals Is Installed

First, you need to check if the web-vitals package is already in your project. Open your terminal and run this command:

npm list web-vitals
  • If the command shows that the package is installed, you’re good to go.
  • If you see a message like -- (empty), that means the package is missing.

2. Install web-vitals

If web-vitals is not installed, you can easily add it by running this command:

npm install web-vitals

Or, if you’re using Yarn as your package manager:

yarn add web-vitals

This will download the package and add it to your project’s node_modules folder.

3. Check Your Import Statement

Next, ensure you’re importing web-vitals correctly in your code. The correct way to import it is like this:

import { getCLS, getFID, getLCP } from 'web-vitals';

Common Mistake: If you accidentally type something like this:

import { getCLS } from 'webVitals'; // Incorrect

The project won’t recognize the module.

4. Clear the Cache

If the error still doesn’t go away, your project might be using an old version of its dependencies. You can clear the cache by running:

npm cache clean --force

After that, reinstall all the dependencies by running:

npm install

5. Delete and Reinstall node_modules

Sometimes, the node_modules folder gets corrupted. To fix this, delete the folder and reinstall everything:

rm -rf node_modules
npm install

If you’re using Windows, you can delete the folder manually or run:

rmdir /s /q node_modules
npm install

6. Try Restarting Your Project

Finally, restart your development server. Run:

npm start

or

yarn start

This refreshes the project and makes sure everything works.

Bonus: How to Prevent This Error in the Future

  • Keep Dependencies Updated: Always keep your packages up-to-date. Run: npm update
  • Double-Check Import Statements: Make sure you type the names of modules exactly as they appear.
  • Use a Package Manager Log File: Tools like package-lock.json (for npm) or yarn.lock ensure your dependencies stay consistent across installations.

Final Thoughts

Fixing the “Module not found: Can’t resolve ‘web-vitals'” error is pretty simple once you understand what’s going wrong. All you need to do is install the package, check your import statements, and make sure everything is set up correctly.

Think of it as troubleshooting a game console when it doesn’t turn on. You check if it’s plugged in, restart it, and follow some basic steps—and voilà, it works again!

If you’re still stuck after trying these steps, don’t worry. Google and developer forums like Stack Overflow are always there to help.

links to resolve the “Module Not Found: Can’t Resolve ‘web-vitals’” error:

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