Vitest

Vitest 5 focuses on performance but has many breaking changes, including Node.js 22 minimum and removed APIs.

warning: action required · 18 breaking changes

• breaking[1]:loupe.inspect is replaced with pretty-format, so inspected output format changes.
• breaking[2]:Quotes are removed from string values in the $ variable of test.for/each titles.
• breaking[3]:The default attachmentsDir moves from .vitest-attachements/ to .vitest/attachments/.
• breaking[4]:The sequential test and suite options are removed.
• breaking[5]:Locators are represented as objects instead of strings.
• breaking[6]:Deprecated entry points are removed.
• breaking[7]:Node.js 22 and Vite 6.4 are required.
• breaking[8]:expect.poll fails when the function does not resolve in time.
• breaking[9]:toHaveTextContent becomes strict.
• breaking[10]:The config file is no longer looked up in ancestor directories.
• breaking[11]:Mocks are cleared by default before each test.
• breaking[12]:The webdriverio package is removed.
• breaking[13]:-t now uses > as the separator, and only is calculated once.
• breaking[14]:Asynchronous assertions that are not awaited now fail the test.
• breaking[15]:locators.exact is enabled by default in browser mode.
• breaking[16]:vitest list parses files statically by default.
• breaking[17]:The blob reporter and --merge-reports default to .vitest/blob/.
• breaking[18]:JSON and JUnit reporter output files are written to .vitest by default.

note: no summary for this older releaseread the release notes