Fix: Cannot read properties of undefined (reading 'offsetHeight') (T1321478)

[ajivanyandev]

No description provided.

[Copilot]

Pull request overview

Fixes a runtime error in DevExtreme’s internal animation/positioning utilities that could occur when APIs are invoked with an empty/unmounted element (e.g., after a widget is removed from the DOM).

Changes:

• Removed the offsetHeight read in resetPosition that could throw when the wrapped element is missing.
• Added an early return in position (m_position.setup) when the target element doesn’t exist.
• Added Jest coverage for resetPosition and positionUtils.setup with missing/empty elements.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
packages/devextreme/js/__internal/common/core/animation/translator.ts	Avoids crashing when finishing a transition on an empty wrapper by removing the offsetHeight access.
packages/devextreme/js/__internal/common/core/animation/translator.test.ts	Adds Jest tests ensuring resetPosition(..., true) doesn’t throw for missing/empty elements.
packages/devextreme/js/__internal/common/core/animation/m_position.ts	Returns undefined early when what resolves to an empty element wrapper, preventing downstream errors.
packages/devextreme/js/__internal/common/core/animation/m_position.test.ts	Adds Jest tests for positionUtils.setup behavior with missing/empty elements (currently only for the no-options path).