new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/modules/add-to-namespace-import.js
@@ -0,0 +1,3 @@
+// |jit-test| module; error: TypeError
+import * as ns from "module1.js";
+ns.b = 2;

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/modules/assign-to-import.js
@@ -0,0 +1,3 @@
+// |jit-test| module; error: TypeError
+import { a } from "module1.js";
+a = 2;

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/modules/assign-to-namespace-import.js
@@ -0,0 +1,3 @@
+// |jit-test| module; error: TypeError
+import * as ns from "module1.js";
+ns.a = 2;

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/modules/assign-to-namespace.js
@@ -0,0 +1,3 @@
+// |jit-test| module; error: TypeError
+import * as ns from "module1.js";
+ns = 2;

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/modules/delete-import.js
@@ -0,0 +1,3 @@
+// |jit-test| module; error: SyntaxError
+import { a } from "module1.js";
+delete a;

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/modules/delete-namespace-import.js
@@ -0,0 +1,3 @@
+// |jit-test| module; error: TypeError
+import * as ns from "module1.js";
+delete ns.a;

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/modules/delete-namespace.js
@@ -0,0 +1,3 @@
+// |jit-test| module; error: SyntaxError
+import * as ns from "module1.js";
+delete ns;