@jest/diff-sequences provides the diffing algorithm used by Jest for highlighting differences between strings and arrays in test failure messages. It employs a longest common subsequence (LCS) approach for accurate and readable diffs. This package focuses specifically on generating a sequence of edit operations (insert, delete, equal) necessary to transform one sequence into another, offering granular control over how differences are presented. Used extensively within Jest, it can also be utilized independently for custom diffing implementations.
As of September 2, 2025, the @jest/diff-sequences npm package hasn't had a release since June 2025, when versions 30.0.0 and 30.0.1 were published. July and August saw no new releases, and September is currently quiet as well. The release frequency has dropped to zero for the past three months.
@jest/diff-sequences downloads were negligible until May 2025. They surged dramatically in June, peaking in August at over 30 million. September's partial data shows a significant drop, but still over a million downloads, indicating continued usage.
