1 files changed, 14 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/is-implemented.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/is-implemented.js
new file mode 100644
index 0000000000..455ff81252
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/is-implemented.js
@@ -0,0 +1,14 @@
+'use strict';
+
+module.exports = function () {
+	var map;
+	if (typeof WeakMap !== 'function') return false;
+	map = new WeakMap();
+	if (typeof map.set !== 'function') return false;
+	if (map.set({}, 1) !== map) return false;
+	if (typeof map.clear !== 'function') return false;
+	if (typeof map.delete !== 'function') return false;
+	if (typeof map.has !== 'function') return false;
+
+	return true;
+};