[Bug]: Named expressions added on engine initialization are not updated on changes (previously: Named expression defined as a cell range does not recalculate) #1501
Description
Description
When using named expressions in HyperFormula, formulas update correctly if a value is initially set in a referenced cell. However, if we update a cell that already has a value, the formula does not recalculate automatically.
The issue is only resolved when we manually call hfInstance.rebuildAndRecalculate(), which pauses our application and significantly slows down performance in our large-scale application.
Steps to Reproduce:
Open this Demo Link
Click Run Logic to see initial calculations working.
Observe that updating a cell does not trigger recalculation.
Manually call rebuildAndRecalculate() → The formula updates, but at the cost of app performance.
Expected Behavior:
✅ Named expressions should always recalculate when referenced cells are updated.
✅ No need for rebuildAndRecalculate() for normal updates.
Actual Behavior:
❌ Updating a cell that already has a value does not trigger recalculation.
❌ rebuildAndRecalculate() is required but causes performance issues in large applications.
Impact on Our Application:
🚨 Our app is large, and calling rebuildAndRecalculate() frequently slows it down and freezes the UI.
We need a more efficient solution that ensures named expressions update automatically when cell values change.
Video or screenshots
No response
Demo
https://stackblitz.com/edit/druuakr9?file=index.ts
HyperFormula version
HyperFormula 3.0.0
Your framework
Vue 3
Your environment
Chrome 133 on macOS 15.3.1