Allow redefining global variables as imports (#5023)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/jerry/module-import-global.mjs

@@ -0,0 +1,23 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import JSON, { counter as Object } from 'module-export-default-1.mjs'
+
+// Overwriting globals.
+assert(typeof JSON === "function")
+assert(Object === 1.1)
+
+// Globals are still available.
+assert(typeof globalThis.JSON === "object")
+assert(typeof globalThis.Object === "function")

tests/snapshot-tests-skiplist.txt

@@ -43,6 +43,7 @@ tests/jerry/module-import-04.mjs
 tests/jerry/module-import-05.mjs
 tests/jerry/module-import-06.mjs
 tests/jerry/module-import-07.mjs
+tests/jerry/module-import-global.mjs
 tests/jerry/module-namespace-01.mjs
 tests/jerry/module-namespace-02.mjs
 tests/jerry/module-namespace-03.mjs