1 files changed, 41 insertions, 0 deletions
diff --git a/tools/eslint/lib/rules/no-multi-str.js b/tools/eslint/lib/rules/no-multi-str.js
new file mode 100644
index 0000000000..1d4810b97d
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+++ b/tools/eslint/lib/rules/no-multi-str.js
@@ -0,0 +1,41 @@
+/**
+ * @fileoverview Rule to flag when using multiline strings
+ * @author Ilya Volodin
+ * @copyright 2014 Nicholas C. Zakas. All rights reserved.
+ * @copyright 2013 Ilya Volodin. All rights reserved.
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = function(context) {
+
+    /**
+     * Determines if a given node is part of JSX syntax.
+     * @param {ASTNode} node The node to check.
+     * @returns {boolean} True if the node is a JSX node, false if not.
+     * @private
+     */
+    function isJSXElement(node) {
+        return node.type.indexOf("JSX") === 0;
+    }
+
+    //--------------------------------------------------------------------------
+    // Public API
+    //--------------------------------------------------------------------------
+
+    return {
+
+        "Literal": function(node) {
+            var lineBreak = /\n/;
+
+            if (lineBreak.test(node.raw) && !isJSXElement(node.parent)) {
+                context.report(node, "Multiline support is limited to browsers supporting ES5 only.");
+            }
+        }
+    };
+
+};