Jest TypeError: Path must be a string. Received undefined

Question

Below settings for my package.json

If I run from command line npm test all jest test cases are executed properly. In case I use directly the command

Answer 1

I solved this issue using:

• npm uninstall -g jest
• npm install -g jest
• npm cache clean
• npm install

Answer 2

For me I had to downgrade. Version 21.x worked for me.

Answer 3

I solved this issue using:

remove node_modules remove package-lock.json

remove dev dependence from package.json of jest npm remove jest --save-dev.

npm cache clean

then run command npm install

then install npm install jest@latest --save-dev

this works for me

Answer 4

In my case i had to update jest to version 21.x (from 20.x).

Try running npm install jest@latest --save-dev.

Answer 5

For me, it was the jest-cli package bumping to 21.x. So npm update jest-cli --save-dev

Answer 6

I am not entirely sure what the problem here is, but I was facing the same issue and what worked for me was updating the Jest version. I was using 20 but I switched to 21 and now it magically works again.

Update version in package.json and then run rm -rf node_modules && npm install