fix(47081): show completion list in parenthesized object literal arguments

Author: a-tarasyuk

src/services/completions.ts

@@ -3754,6 +3754,12 @@ namespace ts.Completions {
             // Object literal is assignment pattern: ({ | } = x)
             return typeChecker.getTypeAtLocation(node.parent);
         }
+        if (isParenthesizedExpression(node.parent)) {
+            const parent = walkUpParenthesizedExpressions(node.parent);
+            if (isExpression(parent)) {
+                return typeChecker.getContextualType(parent);
+            }
+        }
         return undefined;
     }
 

tests/cases/fourslash/completionListInObjectLiteral7.ts

@@ -0,0 +1,17 @@
+/// <reference path='fourslash.ts'/>
+
+////type Foo = { foo: boolean };
+////function f<T>(shape: Foo): any;
+////function f<T>(shape: () => Foo): any;
+////function f(arg: any) {
+////  return arg;
+////}
+////
+////f({ /*1*/ });
+////f(() => ({ /*2*/ }));
+////f(() => (({ /*3*/ })));
+
+verify.completions({
+    marker: ["1", "2", "3"],
+    exact: ["foo"]
+});