Unexpected end of JSON input while parsing when installing vue-cli

[k9yosh]

When i try to install vue-cli via npm i get the following error.

C:\Users\yomal.ds\Desktop\VueJS>npm install --global vue-cli
npm ERR! Unexpected end of JSON input while parsing near '...},"dist":{"shasum": "8'
npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\yomal.ds\AppData\Roaming\npm-cache\_logs\2017-09-12T06_55_ 53_890Z-debug.log

I tried npm cache clean and reinstalling npm.
Debug log is attached. Log.txt

OS : Win 7 x64
npm : v5.4.1
Node : v8.0.0

[posva]

Try updating your node version

[k9yosh]

@posva I was running on Node 8.0.0, and i upgraded to 8.5.0. Now it leads to another error. This was the initial error i got, but then the above error started coming.

npm ERR! path C:\Users\yomal.ds\AppData\Roaming\npm\node_modules\vue-cli\node_modules\fsevents\nod
e_modules\abbrev\package.json
npm ERR! code EPERM
npm ERR! errno -4048
npm ERR! syscall unlink
npm ERR! Error: EPERM: operation not permitted, unlink 'C:\Users\yomal.ds\AppData\Roaming\npm\node
_modules\vue-cli\node_modules\fsevents\node_modules\abbrev\package.json'
npm ERR! { Error: EPERM: operation not permitted, unlink 'C:\Users\yomal.ds\AppData\Roaming\npm\n
ode_modules\vue-cli\node_modules\fsevents\node_modules\abbrev\package.json'
npm ERR! stack: 'Error: EPERM: operation not permitted, unlink 'C:\Users\yomal.ds\AppData\R
oaming\npm\node_modules\vue-cli\node_modules\fsevents\node_modules\abbrev\package.json'',

npm ERR! errno: -4048,
npm ERR! code: 'EPERM',
npm ERR! syscall: 'unlink',
npm ERR! path: 'C:\Users\yomal.ds\AppData\Roaming\npm\node_modules\vue-cli\node_modules
\fsevents\node_modules\abbrev\package.json' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\yomal.ds\AppData\Roaming\npm-cache_logs\2017-09-14T08_16_12_166Z-debug.log

PS : I am running as Administrator

[posva]

In that case, I'll let you search for the error which seems unrelated to vue-cli, if it turns out we need to modify vue-cli code to fix it, please, come back and ping me. Sorry but I really don't know what is the origin of the error

[k9yosh]

Downgrading to npm v5.3 worked for me. It's a npm 5.4 bug npm/npm#18380

[posva]

oh, thanks for sharing 😄

[guozuji]

Thanks

[rahul230691]

Downgraded to npm v5.3, still didn't work for me. Had to downgrade to npm v4.6.1 and it worked fine.

[kels-orien]

thanks. did the same, worked for me too

[AdhamRammadan]

npm cache clean --force

also helps

[MikeTatsky]

@AdhamRammadan
Thank you :)
It helped.

[aminehck]

I had to execute the command below:

npm config set registry http://registry.npmjs.org/
However, that will make npm install packages over an insecure HTTP connection. If you can, you should stick with

npm config set registry https://registry.npmjs.org/
instead to install over HTTPS.

[itsminani]

I tried doing npm cache clean --force and it worked fine for me

[shyamzzp]

npm cache clean --force
@AdhamRammadan

It worked and helped.

[arifikhsan]

npm WARN using --force I sure hope you know what you are doing.