What's New

In addition to this page, you may also follow us on twitter (@WallabyJs) to be notified whenever we release notable features.

Note

The content of this page is adjusted based on your editor of choice. Your editor selection can be changed using the dropdown in the top right corner of the page.

Most Recent Major Features and Changes

The What’s New section includes major features and changes that have been made in the last 12-18 months. For older news or more details about minor updates and changes, please refer to our changelog.

Support for Vitest 5Sep 05 2026

You can now run Vitest 5 projects with Wallaby. This major release changes how Vitest creates projects and Vite servers, including its browser-mode server lifecycle. Update Wallaby before moving your project to Vitest 5.

Support for Jest 30.5Aug 31 2026

The latest Wallaby release adds support for Jest 30.5. Jest's update makes broad changes across its runtime and module system, including ESM and performance improvements. Update Wallaby to start using Jest 30.5 in your project.

Jasmine v7.xAug 17 2026

Jasmine 7 is now supported by Wallaby. This major release redesigns Jasmine's module and boot systems and tightens access to internal APIs. Update Wallaby before moving your project to Jasmine 7.

Native TypeScript Support for node:testJul 21 2026

Wallaby now supports Node.js built-in TypeScript type stripping for node:test projects running Node v22.18 or later. TypeScript tests using .ts, .mts, and .cts files work in both CommonJS and ESM projects without an additional dependency, Node.js flag, or Wallaby configuration.

Test Runner CLI for Coding AgentsMay 27 2026

Wallaby CLI brings runtime test intelligence into agentic coding workflows. Whether you're using Claude Code, Codex CLI, Copilot CLI, OpenCode, Pi, or any other AI coding agent, Wallaby can now run your tests and report results, coverage, and runtime data directly from the command line, without requiring an editor session or an MCP server to be running. This is especially useful for git worktrees and other headless workflows.

Read more

Coverage Complexity and Change Risk MetricsMay 26 2026

Wallaby's Coverage tab now helps you prioritize testing and refactoring work by highlighting files where complex code and lower coverage combine to create higher maintenance risk.

Read more

Previous major features and changes

Our what’s new archive contains the full history of our major features and changes (starting February 2020).

Full Change Log

Our changelog is available in our public repository. Please note that while we update our changelog every few months, we release new versions of Wallaby a few times a week (sometimes a few times a day).

Are we missing something? Share your idea or vote for other submitted ideas