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feat(template): support optional type annotations in @let declarations #66651
Description
Which @angular/* package(s) are relevant/related to the feature request?
core
Description
Extend the @let template declaration syntax to support optional type annotations, similar to TypeScript variable declarations:
@let myVar: MyType = myAny;Eg.:
type MyType = { foo: boolean };
@Component({
selector: 'app-root',
template: `
@let myVar: MyType = myAny;
{{ myVar.foo }}
`,
})
export class App {
MyType!: MyType;
myAny: any = { foo: true };
}Proposed solution
@let myVar: MyType = myAny;Alternatives considered
@let myVar = myAny as MyType;OR
some trick for declare type into template like JSDOC???
type MyType = { foo: boolean };
@Component({
selector: 'app-root',
template: `
<!-- @type { MyType } -->
@let myVar = myAny;
{{ myVar.foo }}
`,
})
export class App {
MyType!: MyType;
myAny: any = { foo: true };
}
Activity
JeanMeche commentedon Jan 20, 2026
This falls under #43485. Right now templates don't see any symbols that are not class members.
angular-automatic-lock-bot commentedon Feb 20, 2026
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