npm / @rstest/core

@rstest/core

What changed in @rstest/core 0.12, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-27.

10 new APIs and options2 behavior and defaults

See which of these apply to your code, ranked, in your agent:

npx @unstale/cli init

@rstest/core 0.1212 changes

Adds a Locator interaction that drags an element to a target Locator, with optional source and target coordinates relative to each element's top-left padding-box corner.
0.12.5docs
Synchronously wraps a DOM Element from the current test document in a Locator, enabling native browser actions and Rstest assertions on elements from Testing Library or third-party tools.
0.12.5docs
Adds native keyboard input to the currently focused element, without focusing or selecting an element first.
0.12.5docs
Adds an assertion for an element's accessible description, accepting a string or regular expression.
0.12.5docs
Adds an assertion for an element's accessible name, accepting a string or regular expression.
0.12.5docs
Adds an assertion for an element's exact ARIA role; role hierarchy is not considered.
0.12.5docs
Adds an assertion for all selected option values of a multiple select, matching the expected array in DOM order.
0.12.5docs
Captures a PNG screenshot for each failed browser test by defaulting to the headless setting; set to false to disable capture.
0.12.4docs
Pass React root options such as onRecoverableError through createRootOptions when rendering.
0.12.4docs
Browser Mode can hydrate matching server-rendered markup without starting a Node server, enabling focused React hydration tests.
0.12.4docs

Accepts DOM elements returned by Testing Library or native DOM queries, converting them through page.elementLocator() and using Locator assertion retry and timeout behavior.
0.12.5docs
Invalidation drops queued presses that have not started, but cannot cancel or roll back native input already in progress.
0.12.5docs