1 files changed, 53 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/no-sync.js b/tools/node_modules/eslint/lib/rules/no-sync.js
new file mode 100644
index 0000000000..06305969a1
--- /dev/null
+++ b/tools/node_modules/eslint/lib/rules/no-sync.js
@@ -0,0 +1,53 @@
+/**
+ * @fileoverview Rule to check for properties whose identifier ends with the string Sync
+ * @author Matt DuVall<http://mattduvall.com/>
+ */
+
+/* jshint node:true */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow synchronous methods",
+            category: "Node.js and CommonJS",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowAtRootLevel: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const selector = context.options[0] && context.options[0].allowAtRootLevel
+            ? ":function MemberExpression[property.name=/.*Sync$/]"
+            : "MemberExpression[property.name=/.*Sync$/]";
+
+        return {
+            [selector](node) {
+                context.report({
+                    node,
+                    message: "Unexpected sync method: '{{propertyName}}'.",
+                    data: {
+                        propertyName: node.property.name
+                    }
+                });
+            }
+        };
+
+    }
+};