1 files changed, 52 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/wrap-regex.js b/tools/node_modules/eslint/lib/rules/wrap-regex.js
new file mode 100644
index 0000000000..79f3d30515
--- /dev/null
+++ b/tools/node_modules/eslint/lib/rules/wrap-regex.js
@@ -0,0 +1,52 @@
+/**
+ * @fileoverview Rule to flag when regex literals are not wrapped in parens
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require parenthesis around regex literals",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [],
+
+        fixable: "code"
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        return {
+
+            Literal(node) {
+                const token = sourceCode.getFirstToken(node),
+                    nodeType = token.type;
+
+                if (nodeType === "RegularExpression") {
+                    const source = sourceCode.getTokenBefore(node);
+                    const ancestors = context.getAncestors();
+                    const grandparent = ancestors[ancestors.length - 1];
+
+                    if (grandparent.type === "MemberExpression" && grandparent.object === node &&
+                        (!source || source.value !== "(")) {
+                        context.report({
+                            node,
+                            message: "Wrap the regexp literal in parens to disambiguate the slash.",
+                            fix: fixer => fixer.replaceText(node, `(${sourceCode.getText(node)})`)
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};