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