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Matthieu Riegler
8bc31a515f
When the switched expression is nested within a union, exhaustive typechecking needs to know which expression to check.
This change adds the possibility of specifying the expression to check:
```
@Component({
selector: 'app-root',
imports: [],
template: `
@switch (state.mode) {
@case ('show') { {{ state.menu }}; }
@case ('hide') {}
@default never(state);
}
`,
changeDetection: ChangeDetectionStrategy.OnPush,
})
export class App {
state!: { mode: 'hide' } | { mode: 'show'; menu: number };;
}
```
fixes #67406