use modulekind to check if initializer for shorthand property assignm…

src/compiler/emitter.ts

@@ -2461,7 +2461,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                 //       let obj = { y };
                 //   }
                 // Here we need to emit obj = { y : m.y } regardless of the output target.
-                if (languageVersion < ScriptTarget.ES6 || isNamespaceExportReference(node.name)) {
+                if (modulekind !== ModuleKind.ES6 || isNamespaceExportReference(node.name)) {
                     // Emit identifier as an identifier
                     write(": ");
                     emit(node.name);

tests/baselines/reference/shorthandPropertyAssignmentInES6Module.errors.txt

@@ -0,0 +1,19 @@
+tests/cases/compiler/test.ts(2,19): error TS2307: Cannot find module './missingModule'.
+
+
+==== tests/cases/compiler/existingModule.ts (0 errors) ====
+
+    export var x = 1;
+
+==== tests/cases/compiler/test.ts (1 errors) ====
+    import {x} from './existingModule';
+    import {foo} from './missingModule';
+                      ~~~~~~~~~~~~~~~~~
+!!! error TS2307: Cannot find module './missingModule'.
+
+    declare function use(a: any): void;
+
+    const test = { x, foo };
+
+    use(x);
+    use(foo);

tests/baselines/reference/shorthandPropertyAssignmentInES6Module.js

@@ -0,0 +1,25 @@
+//// [tests/cases/compiler/shorthandPropertyAssignmentInES6Module.ts] ////
+
+//// [existingModule.ts]
+
+export var x = 1;
+
+//// [test.ts]
+import {x} from './existingModule';
+import {foo} from './missingModule';
+
+declare function use(a: any): void;
+
+const test = { x, foo };
+
+use(x);
+use(foo);
+
+//// [existingModule.js]
+exports.x = 1;
+//// [test.js]
+var existingModule_1 = require('./existingModule');
+var missingModule_1 = require('./missingModule');
+const test = { x: existingModule_1.x, foo: missingModule_1.foo };
+use(existingModule_1.x);
+use(missingModule_1.foo);

tests/cases/compiler/shorthandPropertyAssignmentInES6Module.ts

@@ -0,0 +1,16 @@
+// @target: ES6
+// @module: commonjs
+
+// @filename: existingModule.ts
+export var x = 1;
+
+// @filename: test.ts
+import {x} from './existingModule';
+import {foo} from './missingModule';
+
+declare function use(a: any): void;
+
+const test = { x, foo };
+
+use(x);
+use(foo);