1 files changed, 9 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/reg-exp/is-reg-exp.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/reg-exp/is-reg-exp.js
new file mode 100644
index 0000000000..6eb12977c0
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/reg-exp/is-reg-exp.js
@@ -0,0 +1,9 @@
+'use strict';
+
+var toString = Object.prototype.toString
+
+  , id = toString.call(/a/);
+
+module.exports = function (x) {
+	return (x && (x instanceof RegExp || (toString.call(x) === id))) || false;
+};