Module ts-jest in the transform option was not found.

[Antony Kancidrowski]

Although all modules have been installed with:

npm install

the pipeline has suddenly started to fail to run tests with the message:

Module ts-jest in the transform option was not found.

Using npm ci --verbose also does not work but shows that ts-jest has been installed.

Re-running a successful pipeline from 3rd March 2026 has been successful.

Any advice is appreciated

[Ben · Accepted solution]

Hi @Antony Kancidrowski 

I've opened a ticket on your behalf with our EMEA team as you're experiencing an issue with a paid workspace.

Please check your email for further correspondence.

Cheers!

- Ben (Bitbucket Cloud Support)