1 files changed, 36 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-import-system-module-from-non-system.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-import-system-module-from-non-system.js
new file mode 100644
index 0000000000..2cbc4e7652
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-import-system-module-from-non-system.js
@@ -0,0 +1,36 @@
+/**
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+"use strict";
+
+module.exports = {
+  meta: {
+    docs: {
+      url: "https://firefox-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/rules/reject-import-system-module-from-non-system.html",
+    },
+    messages: {
+      rejectStaticImportSystemModuleFromNonSystem:
+        "System modules (*.sys.mjs) can be imported with static import declaration only from system modules.",
+    },
+    schema: [],
+    type: "problem",
+  },
+
+  create(context) {
+    return {
+      ImportDeclaration(node) {
+        if (!node.source.value.endsWith(".sys.mjs")) {
+          return;
+        }
+
+        context.report({
+          node,
+          messageId: "rejectStaticImportSystemModuleFromNonSystem",
+        });
+      },
+    };
+  },
+};