1 files changed, 4 insertions, 0 deletions
diff --git a/node_modules/core-js/library/modules/_promise-resolve.js b/node_modules/core-js/library/modules/_promise-resolve.js
index 83f4d682c..c3cac7646 100644
--- a/node_modules/core-js/library/modules/_promise-resolve.js
+++ b/node_modules/core-js/library/modules/_promise-resolve.js
@@ -1,6 +1,10 @@
+var anObject = require('./_an-object');
+var isObject = require('./_is-object');
 var newPromiseCapability = require('./_new-promise-capability');
 
 module.exports = function (C, x) {
+  anObject(C);
+  if (isObject(x) && x.constructor === C) return x;
   var promiseCapability = newPromiseCapability.f(C);
   var resolve = promiseCapability.resolve;
   resolve(x);