angular-control-flow

To migrate Angular templates, replace legacy structural directives like *ngIf and *ngFor with the new @if and @for control flow syntax. This process preserves template semantics while modernizing conditionals and loops for Angular 17+ upgrades.

The new Angular control flow syntax uses @if, @for, and @switch for template logic, replacing deprecated directives. Use it during Angular 17+ migrations to simplify templates, improve readability, and enable better performance and lazy-loading patterns.

Yes, you can use @defer with placeholders for lazy-loaded views in Angular 17+. The control flow migration recommends adding defer placeholders and lazy-loading rules to optimize performance for heavy components during template refactoring.

Yes, migrating to Angular control flow syntax requires adding track keys for list rendering. When replacing *ngFor with @for, the migration process ensures track functions are added to maintain performance and proper collection updates.

The best way to handle empty states when replacing ngSwitch with @switch is to use the built-in empty state handling provided by the new control flow syntax. This ensures semantic preservation while simplifying conditional rendering logic.

When refactoring large Angular 16 codebases to control flow syntax, limitations include ensuring all legacy directives are properly replaced and track keys are configured. The migration targets Angular 17+ templates and requires careful semantic preservation during upgrades.