Control flow migration issue: templates are not deleted #56965
Description
Command
generate
Is this a regression?
- Yes, this behavior used to work in the previous version
The previous version in which this bug was not present was
No response
Description
After running the control flow migration, used templates are not deleted.
Before:
<div>
<div *ngIf="param; else loading">
<div>content</div>
</div>
<ng-template #loading>
<div>loading</div>
</ng-template>
</div>
After:
<div>
@if (param) {
<div>
<div>content</div>
</div>
} @else {
<div>loading</div>
}
<ng-template #loading>
<div>loading</div>
</ng-template>
</div>
Expected result would be that the used template is removed or at least there is a comment added with explanation.
Minimal Reproduction
Commands:
- npx @angular/cli@17 new angular-18-migration-issues
- ng update @angular/core@18 @angular/cli@18
- ng g @angular/core:control-flow
Example commit: szape89/angular-18-migration-issues@f3f2548
Exception or Error
No response
Your Environment
Angular CLI: 18.1.0
Node: 20.15.0
Package Manager: npm 10.7.0
OS: win32 x64
Angular: 18.1.0
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1801.0
@angular-devkit/build-angular 18.1.0
@angular-devkit/core 18.1.0
@angular-devkit/schematics 18.1.0
@schematics/angular 18.1.0
rxjs 7.8.1
typescript 5.4.5
zone.js 0.14.7
Anything else relevant?
No response