npm / vitest-browser-react

vitest-browser-react

What changed in vitest-browser-react 2, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-20.

1 breaking5 new APIs and options1 behavior and defaults2 tooling4 fixes and other

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vitest-browser-react 213 changes

Breaking changes 1

Adds support for async act v2, changing the supported act behavior.
2.0.0release notes

New APIs and options 5

Adds createRootOptions to ComponentRenderOptions.
2.2.0release notes
Exposes page.renderHook.
2.2.0release notes
Integrates trace mark with render.
2.1.0release notes
Adds a locator property.
2.0.0release notes
Adds a RenderOptions type to make migration from RTL easier.
2.0.0release notes

Behavior and default changes 1

A stable testid is attached to the default baseElement and container; snapshots using container may need Vitest 4.0.18 to avoid rendering the injected attribute.
2.0.3release notes

Tooling 2

Adds support for vitest 5, allowing developers to use this package with that version.
2.3.0release notes
Adds support for the new Vitest 4 syntax.
2.0.0release notes

Fixes and other changes 4

Avoids act warnings when using vitest-browser-react.
2.0.5release notes
Injects a consistent testid, making test identifiers more predictable.
2.0.4release notes
Use a simple counter for act.
2.0.3release notes
Unwanted tsconfig options were removed.
2.0.2release notes