27 posts tagged with "stryker-js"

Welcome to the latest major release of StrykerJS, version 7.0!

We are excited to introduce you to 2 new friends: ⚡ Vitest and 📼 Node Tap. There are also some quality-of-life improvements and some (minor) breaking changes.

We're excited to announce StrykerJS 6.4. This release comes with some bug fixes, but in this article, we will focus on upgraded TypeScript Checker.

As a reminder, the TypeScript checker is an optional StrykerJS plugin. When configured, each mutant will first be validated to not result in compile errors when run through the TypeScript compiler.

The performance of this process has been an issue for quite some time now. In the past, enabling this plugin might have resulted in up to a 10x performance degradation. But there is excellent news, version 6.4 of the Typescript checker improves the performance by up to 50%

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!

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.

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.

With version 3 of Stryker, we've been focussing on usability. We also did some smaller changes worth pointing out. For a full list of changes, please read our changelog.