Angular chat & Angular 20#1228
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📝 WalkthroughWalkthroughAdds an Angular 20 chat virtualization example with end anchoring and streaming replies, updates Angular compatibility and example projects, and upgrades TypeScript plus package TypeScript scopes. ChangesAngular 20 chat example
Estimated code review effort: 3 (Moderate) | ~25 minutes Sequence Diagram(s)sequenceDiagram
participant User
participant AppComponent
participant Virtualizer
User->>AppComponent: Scroll or select a chat action
AppComponent->>Virtualizer: Update messages and item count
Virtualizer->>AppComponent: Render measured virtual items
AppComponent->>User: Show anchored or streaming messages
Possibly related PRs
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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🧹 Nitpick comments (1)
examples/angular/chat/src/app/app.component.ts (1)
5-6: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick winPrefer
afterRenderEffectfor DOM measurements.Please consider using
afterRenderEffectinstead ofeffectfor DOM reads. Angular'seffectruns during change detection and can occasionally read before layout has fully settled. TheafterRenderEffectAPI ensures thatmeasureElementruns securely after the DOM updates are painted.This change also aligns with the timing used inside the
@tanstack/angular-virtualinternal library measurements and tests.♻️ Proposed refactor
Update the import statement:
Component, DestroyRef, afterNextRender, - effect, + afterRenderEffect, inject, signal,And update the measurement effect initialization (around line 126):
- private readonly measureItems = effect( - () => + private readonly measureItems = afterRenderEffect({ + read: () => { this.virtualItems().forEach((element) => { this.virtualizer.measureElement(element.nativeElement) - }), - { allowSignalWrites: true }, - ) + }) + } + })🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@examples/angular/chat/src/app/app.component.ts` around lines 5 - 6, Replace the Angular effect used for DOM measurement with afterRenderEffect in the app component: update the import and the measurement effect initialization so measureElement runs after rendering. Leave unrelated effects and the existing measurement behavior unchanged.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@examples/angular/chat/src/app/app.component.ts`:
- Around line 5-6: Replace the Angular effect used for DOM measurement with
afterRenderEffect in the app component: update the import and the measurement
effect initialization so measureElement runs after rendering. Leave unrelated
effects and the existing measurement behavior unchanged.
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Review profile: CHILL
Plan: Pro
Run ID: 4f87bc04-b832-4750-8e5d-fa8758c90321
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pnpm-lock.yamlis excluded by!**/pnpm-lock.yaml
📒 Files selected for processing (69)
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1 participant
🎯 Changes
✅ Checklist
pnpm run test:pr.🚀 Release Impact
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