--- /dev/null
+var defineProperty = require('../internals/object-define-property').f;
+var has = require('../internals/has');
+var wellKnownSymbol = require('../internals/well-known-symbol');
+
+var TO_STRING_TAG = wellKnownSymbol('toStringTag');
+
+module.exports = function (it, TAG, STATIC) {
+ if (it && !has(it = STATIC ? it : it.prototype, TO_STRING_TAG)) {
+ defineProperty(it, TO_STRING_TAG, { configurable: true, value: TAG });
+ }
+};