1 files changed, 54 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/no-class-assign.js b/tools/node_modules/eslint/lib/rules/no-class-assign.js
new file mode 100644
index 0000000000..4b0443abc7
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+++ b/tools/node_modules/eslint/lib/rules/no-class-assign.js
@@ -0,0 +1,54 @@
+/**
+ * @fileoverview A rule to disallow modifying variables of class declarations
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow reassigning class members",
+            category: "ECMAScript 6",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable - A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            astUtils.getModifyingReferences(variable.references).forEach(reference => {
+                context.report({ node: reference.identifier, message: "'{{name}}' is a class.", data: { name: reference.identifier.name } });
+
+            });
+        }
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {ASTNode} node - A ClassDeclaration/ClassExpression node to check.
+         * @returns {void}
+         */
+        function checkForClass(node) {
+            context.getDeclaredVariables(node).forEach(checkVariable);
+        }
+
+        return {
+            ClassDeclaration: checkForClass,
+            ClassExpression: checkForClass
+        };
+
+    }
+};