Why create-react-app doesn't create new app

Question

I installed the latest version on Node JS with npm and cannot run create-react-app. The following problem occurs:

Creating a new React app in C:\wamp64\www\bob.

Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts...

npm ERR! Unexpected end of JSON input while parsing near '....tgz"}},"2.3.4":{"nam'

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\Ivana\AppData\Roaming\npm-cache_logs\2019-02-26T21_21_48_727Z-debug.log

Aborting installation.
npm install --save --save-exact --loglevel error react react-dom react-scripts has failed.

Deleting generated file... package.json
Deleting bob/ from C:\wamp64\www
Done.

Versions:

Node v10.15.1
npm 6.7.0

Can somebody help?

After running npm cache clean --force

the another error occurs:

$ create-react-app bob

Creating a new React app in C:\Users\Ivana\bob.

Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts...

npm ERR! Unexpected end of JSON input while parsing near '...,"@babel/plugin-synta'

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Ivana\AppData\Roaming\npm-cache\_logs\2019-02-27T09_18_28_856Z-debug.log

Aborting installation.
  npm install --save --save-exact --loglevel error react react-dom react-scripts has failed.

Deleting generated file... package.json
Deleting bob/ from C:\Users\Ivana
Done.

Did you try purging mode_modules and installing dependencies from clean? Also in windows npm cache clean --force might help. — Mike Doe
– Mike Doe, Commented Feb 27, 2019 at 8:58
@emix what do you mean by deleting node_modules and installing dependencies from clean, how can I do that? — Ivana
– Ivana, Commented Feb 27, 2019 at 9:09
This is probably linked to this github issue, try npm cache clean --force — Saraband
– Saraband, Commented Feb 27, 2019 at 9:13
I tried with npm cache clean --force and the result is after: npm ERR! Unexpected end of JSON input while parsing near '...,"@babel/plugin-synta' npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\Ivana\AppData\Roaming\npm-cache_logs\2019-02-27T09_18_28_856Z-debug.log Aborting installation. npm install --save --save-exact --loglevel error react react-dom react-scripts has failed. Deleting generated file... package.json Deleting bob/ from C:\Users\Ivana Done. — Ivana
– Ivana, Commented Feb 27, 2019 at 9:23

turchak · Accepted Answer · 2022-01-12 11:43:08Z

9

From https://create-react-app.dev/docs/getting-started#creating-an-app

npx create-react-app my-app

(npx comes with npm 5.2+ and higher)

But you used

`create-react-app my-app`

If you use npm 5.1 or earlier, you can't use npx. Instead, install create-react-app globally:

npm install -g create-react-app

Now you can run:

create-react-app my-app

edited Jan 12, 2022 at 11:43

answered Feb 27, 2019 at 9:48

turchak

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1 Comment

Ivana Over a year ago

After running npm cache clean --forcem i tried npx create-react-app my-app and it works voila :) Thanks, turchak

Santosh Singh · Accepted Answer · 2019-07-07 06:29:28Z

1

I was also not able to create a new app but when I follow these step then it works for me.

answered Jul 7, 2019 at 6:29

Santosh Singh

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Comments

Xapadoan · Accepted Answer · 2019-12-11 01:10:12Z

1

After a few searches, I found this :

If you've previously installed create-react-app globally via npm install -g create-react-app, we recommend you uninstall the package using npm uninstall -g create-react-app to ensure that npx always uses the latest version.

So if you installed create-react-app with

npm -g install create-react-app

just run :

npm -g uninstall create-react-app npx create-react-app

It should do the job

answered Dec 11, 2019 at 1:10

Xapadoan

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1 Comment

Eden Sharvit Over a year ago

This answer worked best for me, also I didn't clean my cache but instead, I typed: npm cache verify.

Mebin Joe · Accepted Answer · 2019-08-19 06:29:28Z

0

I was able to solve this problem by,

running

npm cache clean --force

then

npm create-react-app my-app

edited Aug 19, 2019 at 6:29

Mebin Joe

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answered Aug 19, 2019 at 5:59

yungdenzel

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