How to set up Jest in your JavaScript project using npm

I have been attempting to install jest using npm, both locally and globally, but it fails to install.

My npm version is 7.5.2 and my node version is 12.22.5. I am using ubuntu.

I have tried the following commands:

npm i -D jest
npm i -g jest
npm i jest

However, jest does not get installed.

This is the error message I receive: alireza@SUCCESS:~/Desktop/test$ sudo npm i -D jest [sudo] password for alireza: npm ERR! code FETCH_ERROR npm ERR! errno FETCH_ERROR npm ERR! invalid json response body at https://registry.npmjs.org/@jest%2ftransform reason: Unexpected end of JSON input

npm ERR! A complete log of this run can be found in: npm ERR! /root/.npm/_logs/2022-02-14T12_19_47_677Z-debug.log

https://i.sstatic.net/AHCF0.png

javascriptnpm

Answer №1

Occasionally, this issue can be tied to an invalid cache so my initial recommendation would be to execute:

npm cache clean --force.

Please inform me if this resolves the problem.

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