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fix(compiler-cli): extended diagnostics not validating ICUs #57845

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fix(compiler-cli): extended diagnostics not validating ICUs #57845

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5 changes: 4 additions & 1 deletion packages/compiler-cli/src/ngtsc/typecheck/extended/api/api.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -228,7 +228,10 @@ class TemplateVisitor<Code extends ErrorCode>
visitBoundText(text: TmplAstBoundText): void {
this.visitAst(text.value);
}
visitIcu(icu: TmplAstIcu): void {}
visitIcu(icu: TmplAstIcu): void {
Object.keys(icu.vars).forEach((key) => this.visit(icu.vars[key]));
Object.keys(icu.placeholders).forEach((key) => this.visit(icu.placeholders[key]));
}

visitDeferredBlock(deferred: TmplAstDeferredBlock): void {
deferred.visitAll(this);
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9 changes: 9 additions & 0 deletions ...gtsc/typecheck/extended/test/checks/unused_let_declaration/unused_let_declaration_spec.ts
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Expand Up @@ -108,5 +108,14 @@ runInEachFileSystem(() => {

expect(diags.length).toBe(0);
});

it('should not report a @let declaration that is only used in an ICU', () => {
const diags = diagnose(`
@let value = 1;
<h1 i18n>{value, select, 1 {one} 2 {two} other {other}}</h1>
`);

expect(diags.length).toBe(0);
});
});
});