I've run into a nasty config issue in a project using Next.js 14.2.5 (pages router), Jest, and Sentry. I am upgrading from Sentry v7 to v8, and any time that I import from @sentry/nextjs, running Jest tests immediately results in a cryptic error:

TypeError: Cannot read properties of undefined (reading 'events')

I've run into a nasty config issue in a project using Next.js 14.2.5 (pages router), Jest, and Sentry. I am upgrading from Sentry v7 to v8, and any time that I import from @sentry/nextjs, running Jest tests immediately results in a cryptic error:

TypeError: Cannot read properties of undefined (reading 'events')

• next.js
• jestjs
• sentry

1 Answer 1

While it is presenting differently, I believe the error is the same one reported in this GitHub Issue, and the work-around proposed there worked for me as well. I added the following to my jest.config.js:

  moduleNameMapper: {  
    '@sentry/nextjs': '\<rootDir\>/node_modules/@sentry/nextjs',  
  },  

Cross-posting here with the specific error message I encountered so that it can be found a little more easily by the next person