Rishi

Posted on May 15, 2020

npm ERR! Unexpected end of JSON input while parsing near

#errors #troubleshooting #npm #webdev

You are trying to create a new angular, react, vue app, and you end up with an error message saying:

npm ERR! Unexpected end of JSON input while parsing near

There's a high chance that your npm cache been damaged.

Try:



npm cache clean --force

If you are a windows user, try deleting all files in this folder:



C:\Users{{your-username}}\AppData\Roaming\npm-cache

Then...



npm cache verify

If that doesn't work, try updating to the lastest (understand the risks)



npm i npm@latest -g

I hope this helps!

Top comments (45)

Eugene Kuzmenko • Sep 13 '20 • Edited

It doesn't help. It's dumb to suggest for people to clean their cache every time.
The --force flag is there for a reason. It's giving you the option, while at the same time trying to persuade you not to do it.
What I wish is for some of these articles to suggest a way to identify the failing package.
Because the npm error logs are less than useless in this regard.
It needs to print the url it was trying to fetch, and not just say that it failed to parse some abstract json, coming from God only knows where.
On any decently sized project there are hundreds of packages.
Many companies use proxy servers for npm.
An attempt to load a package can fail for a multitude of reasons.

Akinwande Akin-James • Mar 18 '21

So what do you sugggest?

Eugene Kuzmenko • Mar 18 '21

I am, honestly, yet to find a good solution for this.
The problem is not so much with this article as it is with npm itself.
Just use yarn if you can 😀

Akinwande Akin-James • Mar 18 '21 • Edited

Its all good

Ankush Chauhan • Nov 17 '20 • Edited

first run

npm i -g create-react-app

then it will update and remove some package in this directly to




**Then your can easily run**

 ```npx create-react-app my-app```



and it will works !!!!!

Rishi • Nov 17 '20

Nice!!! Thanks Ankush.

Derick Makuto Simiyu • Jun 8 '20

Unexpected end of JSON input while parsing near '...13G5T8C+0g+Ie\nFKMevH'
I'm a windows user n got the above error while running create-react-app on my terminal.
After deleting everything in npm-cache, then ran npm cache verify, the create-react-app command installed...
Thanks!

Ronnie Lutalo • Sep 28 '20

Hello! this has worked for me too. Thanks!

Rishi • Jun 10 '20

Nice!!!

Krypton | Madhusudan Babar • May 15 '20

But i get this error for every single installation,
I tried with --cache to temporarily set another cache directory but still,
It happens everytime with me

Rishi • May 15 '20 • Edited

Normally,
npm cache clean --force
solves the problem for most people.

If you scenario permits, you can consider a full uninstall of npm + delete the C:\Users{{your-username}}\AppData\Roaming\npm-cache folder.

Then re-install npm.

Finally, if nothing works for you, give yarnpkg.com/ a try.
You'll find yarn faster than npm :-)

Krypton | Madhusudan Babar • May 15 '20

Yeah,
I already switched to yarn
Thanks 😇

Rishi • May 15 '20

Nice!!!
Always have a plan B :-)

Ariel Reyes • Jun 14 '20

How can I really switch to Yarn and avoid PACKAGE.JSON MIXING?

Ariel Reyes • Jun 14 '20

Ahhh Sorry. Thnks it worked.

Stanislav Domanskyi • Oct 26 '20

Thank you! I had the same issue with executing npm i -g @loopback/cli

It has helped me but first I switched through the nvm from node v12.19.0 to 10.22.1
After following all above instructions finally I've got this package.

Russel Santos • Jun 12 '20

I had the same problem but npm cache clean --force didn't work for me. What I did was CLEAN MY PC using my cleaner(CCleaner) and npm install work now. I did it because the problem appears after I uninstall my node.js because I want to install nvm-windows on my PC (docs.microsoft.com/en-us/windows/n...), but after I did it I think some files and folders was leave behind making a conflict after I install node using nvm thus npm install do not work. So I thought cleaning my pc would solve the problem and it did.
These are just my thoughts. Hope to help someone.

Binel binel • Nov 11 '20

This really helped me. I was facing that issue when trying to create a new Angular project and an ionic project. After cleaning my NPM cache, I successfully installed the ionic app.

Thank you very much.

incubers31 • Jul 20 '20

E:\xampp\htdocs\sumit\angular>npm install -g @angular/cli
npm ERR! Response timeout while trying to fetch registry.npmjs.org/@schematics%2fa... (over 30000ms)

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\sam\AppData\Roaming\npm-cache_logs\2020-07-20T06_40_14_633Z-debug.log

Please tell me why this issue occurring during installing Angular