We're excited to announce StrykerJS 6.2. Of course, this release comes with some bug fixes, but in this article, we want to focus on a popular new feature: incremental mutation testing.

Incremental mutation testing is ideal for Continuous Integration (CI) scenarios or if you want a faster feedback cycle locally. Indeed, many users seem to be interested in this since it was our most upvoted issue ever.

While in 'incremental mode', StrykerJS will track the changes you make to your code and tests and only runs mutation testing on the changed code; while still providing a full mutation testing report at the end!

Until recently, it would be quite cumbersome to integrate PIT with the Stryker Mutator Dashboard. It involved (mis-) using a different PIT reporter, a fragile Bash script to fiddle around in one of the generated JavaScript files... Not pretty at all.

A first-class tool like PIT deserves a better integration with a first-class dashboard like the Stryker Mutator Dashboard!

We're excited to announce the next major release of the StrykerJS: StrykerJS 6.0.

StrykerJS now supports native ECMAScript modules, or ESM for short. To make this work, we changed some parts of StrykerJS, which includes small (yet technically breaking) changes. As a bonus, we've improved performance considerably in some use cases! We're curious to know what you think. Why not try it today?

We're excited to announce the beta of the next major release of the StrykerJS: StrykerJS 6.0.

From the 6th version onward, StrykerJS supports native ECMAScript modules, or ESM for short. To make this work, we changed some parts of StrykerJS, which includes small (yet technically breaking) changes. As a bonus, we've improved performance considerably in some use cases! We're curious to know what you think. Why not try the beta today?

We're proud to announce the first major release of Stryker.NET: 1.0. It comes with exciting new features and an overhaul of how you interact with the Stryker CLI. With the release of Stryker 1.0, we wanted to create a cohesive and intuitive user experience.

Stryker4s is your friendly mutation testing framework for Scala. Compared to earlier versions, Stryker4s 0.12 achieves a 60x speed increase in some scenarios 🤯. Are you curious to know how? Keep on reading.

We're proud to announce the next major release of StrykerJS: 5.0. With a name change, a new dimension in your report, a new way to discover files, updated mutators, quality of life improvements, and minor bug fixes.

We're proud to announce the next major release of the Stryker mutation testing framework for JavaScript and friends: Stryker 4.0.

This release marks a fundamental shift in the way Stryker works internally. It now uses "mutation switching", which improves performance and usability, similar to how Stryker.NET and Stryker4s already work. This change, unfortunately, couldn't be done without breaking changes. See the breaking changes paragraph if you're interested.

We're excited to announce the beta of the next major release of the Stryker mutation testing framework for JavaScript and friends: Stryker 4.0.

This beta is a huge milestone because it means a fundamental shift in the way Stryker works internally. It now uses "Mutation switching", a technique that can improve performance.

Over the past few months we have been working hard to integrate Stryker.NET with azure pipelines. Learn how you can leverage our new features to include mutation testing in your continuous integration.