What's New
Wallaby CLI brings runtime 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 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.
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.
Wallaby now supports the latest version of vitest (v4.1.4+). The recent update of vitest included major breaking changes that required updates to Wallaby’s vitest integration.
Wallaby now supports the latest version of vitest (v4.1.0+). The recent update of vitest included major breaking changes that required updates to Wallaby’s vitest integration.
For Angular CLI v21 workspaces and projects, Wallaby now automatically detects and configures the default Vitest runner. Wallaby runs tests in Node.js environments such as jsdom and happy-dom, or in browsers via playwright or webdriverio, and provides better incremental run performance, reliability, and live results streaming.
Wallaby now supports running Vitest v4.x+ in browser mode, using either the playwright or webdriverio providers. Wallaby will run your browser instances in headless mode by default (overridable by setting headless: false in your vitest config).
We’re excited to introduce Zen Mode, a new Wallaby.js feature that gives you control over when you see test feedback in your editor.
Wallaby’s MCP server tools are now available in JetBrains editors. Read more about how to enable it in our docs.
Wallaby UI now supports peeking into source code locations directly from various views, including the Test list and Test
tree, Error panels, Logs list, etc. Pretty much any UI element that has a source code location associated with it will
now allow you to peek into the source code without navigating away from your current context. To use the feature,
simply press the . key when focused on an item with a source location.
Wallaby now supports the latest version of vitest (v4.x+). The recent update of vitest included major breaking changes that required updates to Wallaby’s vitest integration.