create-react-app : npm ERROR! JSON data parsing halted unexpectedly near '....'

Explain the issue

The command npx create-react-app my-app is not functioning properly. I have attempted to resolve the problem by using npm cache clean --force, but unfortunately, I continue to encounter the same error repeatedly.

Steps for replication

  1. npm cache clean --force
  2. Run either npm create-react-app front or npx create-react-app front
npm init react-app front
npx: installed 98 in 37.068s

Creating a new React app in /home/h4kst3r/Desktop/APIs/restaurant-API/front.

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

npm ERR! Unexpected end of JSON input while parsing near '...zAJNgZjZUkJ08ybAxwNnR'

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/h4kst3r/.npm/_logs/2020-05-20T20_47_49_189Z-debug.log

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

Deleting generated file... package.json
Deleting front/ from /home/h4kst3r/Desktop/APIs/restaurant-API
Done.

System:

Operating System: Linux (Kernel 5.4), Ubuntu 20.04 LTS (Focal Fossa)

reactjsubuntunpmnpx

Answer №1

The reason for this issue is likely due to a poor internet connection. We recommend waiting until your internet speed improves or downloading and installing each dependency individually.

Answer №2

In case the npx create-react-app my-app command is not functioning properly and displays an error message such as 

npm ERR! Unexpected end of JSON input while parsing near '...zAJNgZjZUkJ08ybAxwNnR'
, it is recommended to verify your npm version:

npm --version 
npm -v

If necessary, update your npm version by executing the following command:

npm install -g npm@latest

Following these steps should resolve the issue.

Answer №3

To begin, you should first check your npm version by utilizing the command npm --version. If you already have npm installed, proceed to globally install npx using npm i -g npx. Make sure both npm and ngx are correctly installed for everything to function smoothly.

Answer №4

By executing the command <code>sudo npm i -g npx --force
, I was able to resolve the issue successfully.

Answer №5

There could be two possible factors contributing to the issue.

  1. Inadequate internet connection.
  2. An outdated npm version.

Make sure to upgrade your npm and ensure you have a strong internet connection.

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