fix(joint-react): fix links flickering#3159
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…intJS elements and links - Add BatchCache class for managing batched updates for links, ports, and clear views. - Introduce ClearViewCacheEntry and related functions for managing clear view updates. - Create PortUpdateCacheEntry and functions for merging port updates and groups. - Implement state flushing functions to handle element and link updates in a React-friendly manner. - Develop example story demonstrating cell actions with dynamic node and link management. - Define GraphSchedulerData type for unified scheduling of updates across elements, links, and ports.
…in various components and tests - Updated GraphProvider stories to remove 'id' from elements and links. - Cleaned up highlighter tests by removing 'id' from element definitions. - Adjusted stroke highlighter tests to eliminate 'id' from elements. - Modified paper tests to remove 'id' from elements and links. - Refactored port tests to exclude 'id' from elements. - Updated hooks tests to remove 'id' from elements. - Cleaned up model tests by removing 'id' from ReactElement and ReactLink instances. - Adjusted example stories to remove 'id' from elements and links.
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packages/joint-react/src/store/__tests__/create-elements-size-observer.test.ts
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Description
Fixes link flickering issue where links would briefly appear before element content was rendered.
Motivation and Context
The Bug: When rendering a Paper with elements and links, the visual sequence was:
This happened because JointJS renders link SVG paths synchronously, while React portals render element content via microtask (later).
Changes
create-elements-size-observer.tsto ensure consistent timing between link paths and element contentpaper-link-flickering.test.tsx) that verifies the invariant: "If links are visible with rendered paths, elements must also have their content rendered"