--- /dev/null
+var anObject = require('../internals/an-object');
+var isObject = require('../internals/is-object');
+var newPromiseCapability = require('../internals/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);
+ return promiseCapability.promise;
+};