Add test for object literal methods

tests/baselines/reference/typeCheckReturnExpressionMethodBody.errors.txt

@@ -0,0 +1,7 @@
+tests/cases/compiler/typeCheckReturnExpressionMethodBody.ts(1,13): error TS7010: 'bar', which lacks return-type annotation, implicitly has an 'any' return type.
+
+
+==== tests/cases/compiler/typeCheckReturnExpressionMethodBody.ts (1 errors) ====
+    var foo = { bar() { return undefined } };
+                ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS7010: 'bar', which lacks return-type annotation, implicitly has an 'any' return type.

tests/baselines/reference/typeCheckReturnExpressionMethodBody.js

@@ -0,0 +1,5 @@
+//// [typeCheckReturnExpressionMethodBody.ts]
+var foo = { bar() { return undefined } };
+
+//// [typeCheckReturnExpressionMethodBody.js]
+var foo = { bar: function () { return undefined; } };

tests/cases/compiler/typeCheckReturnExpressionMethodBody.ts

@@ -0,0 +1,2 @@
+//@noImplicitAny: true
+var foo = { bar() { return undefined } };