Today we're announcing a switch to major revisions for Jest with Jest 11.0 being the first major release. Jest has been used by Facebook engineers and on our continuous integration systems for years and we believe Jest has been way beyond a “1.0 release” for a long time. This is similar to a change the React team has made.
If you are using Jest 0.9 or Jest 0.10 the upgrade should be seamless. All changes from the last few months were rolled into Jest 11.0.
New in Jest 11.0.
Babel Integration and Simplified Setup
babel-jest was adopted within the newly modularized Jest repository and it is now seamlessly integrated into Jest. If you are upgrading from an older version of Jest or are looking to adopt Jest, we recommend reading the Getting Started guide.