1 files changed, 18 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es6-iterator/node_modules/es6-symbol/is-implemented.js b/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es6-iterator/node_modules/es6-symbol/is-implemented.js
new file mode 100644
index 0000000000..53759f3212
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es6-iterator/node_modules/es6-symbol/is-implemented.js
@@ -0,0 +1,18 @@
+'use strict';
+
+module.exports = function () {
+	var symbol;
+	if (typeof Symbol !== 'function') return false;
+	symbol = Symbol('test symbol');
+	try { String(symbol); } catch (e) { return false; }
+	if (typeof Symbol.iterator === 'symbol') return true;
+
+	// Return 'true' for polyfills
+	if (typeof Symbol.isConcatSpreadable !== 'object') return false;
+	if (typeof Symbol.iterator !== 'object') return false;
+	if (typeof Symbol.toPrimitive !== 'object') return false;
+	if (typeof Symbol.toStringTag !== 'object') return false;
+	if (typeof Symbol.unscopables !== 'object') return false;
+
+	return true;
+};