fix: show deprecated error for alias

Author: a-tarasyuk

src/compiler/checker.ts

@@ -22730,11 +22730,9 @@ namespace ts {
             }
 
             const localOrExportSymbol = getExportSymbolOfValueSymbolIfExported(symbol);
-            let declaration: Declaration | undefined = localOrExportSymbol.valueDeclaration;
+            checkDeprecatedIdentifier(node, localOrExportSymbol);
 
-            if (declaration && getCombinedNodeFlags(declaration) & NodeFlags.Deprecated && isUncalledFunctionReference(node.parent, localOrExportSymbol)) {
-                errorOrSuggestion(/* isError */ false, node, Diagnostics._0_is_deprecated, node.escapedText as string);;
-            }
+            let declaration: Declaration | undefined = localOrExportSymbol.valueDeclaration;
             if (localOrExportSymbol.flags & SymbolFlags.Class) {
                 // Due to the emit for class decorators, any reference to the class from inside of the class body
                 // must instead be rewritten to point to a temporary variable to avoid issues with the double-bind
@@ -28307,6 +28305,13 @@ namespace ts {
             return returnType;
         }
 
+        function checkDeprecatedIdentifier(node: Identifier, symbol: Symbol) {
+            const sourceSymbol = symbol.flags & SymbolFlags.Alias ? resolveAlias(symbol) : symbol;
+            if (getDeclarationNodeFlagsFromSymbol(sourceSymbol) & NodeFlags.Deprecated && isUncalledFunctionReference(node.parent, sourceSymbol)) {
+                errorOrSuggestion(/* isError */ false, node, Diagnostics._0_is_deprecated, node.escapedText as string);
+            }
+        }
+
         function checkDeprecatedSignature(signature: Signature, node: CallLikeExpression) {
             if (signature.declaration && signature.declaration.flags & NodeFlags.Deprecated) {
                 const suggestionNode = getDeprecatedSuggestionNode(node);

tests/cases/fourslash/jsdocDeprecated_suggestion11.ts

@@ -0,0 +1,27 @@
+///<reference path="fourslash.ts" />
+
+// @filename: /foo.ts
+/////** @deprecated */
+////export function foo() {}
+
+// @filename: /test.ts
+////import { [|foo|] } from "./foo";
+////[|foo|];
+
+goTo.file("/test.ts");
+const [r0, r1] = test.ranges();
+
+verify.getSuggestionDiagnostics([
+    {
+        "code": 6385,
+        "message": "'foo' is deprecated",
+        "reportsDeprecated": true,
+        "range": r0
+    },
+    {
+        "code": 6385,
+        "message": "'foo' is deprecated",
+        "reportsDeprecated": true,
+        "range": r1
+    }
+]);