1 files changed, 12 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es6-symbol/is-symbol.js b/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es6-symbol/is-symbol.js
new file mode 100644
index 0000000000..dcf72c9aaa
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es6-symbol/is-symbol.js
@@ -0,0 +1,12 @@
+'use strict';
+
+var toString    = Object.prototype.toString
+  , toStringTag = require('./').toStringTag
+
+  , id = '[object Symbol]'
+  , Global = (typeof Symbol === 'undefined') ? null : Symbol;
+
+module.exports = function (x) {
+	return (x && ((Global && (x instanceof Global)) ||
+			(toString.call(x) === id) || (x[toStringTag] === 'Symbol'))) || false;
+};