1 files changed, 9 insertions, 0 deletions
diff --git a/node_modules/es5-ext/object/ensure-promise.js b/node_modules/es5-ext/object/ensure-promise.js
new file mode 100644
index 000000000..0a1119c4e
--- /dev/null
+++ b/node_modules/es5-ext/object/ensure-promise.js
@@ -0,0 +1,9 @@
+"use strict";
+
+var safeToString = require("../safe-to-string")
+  , isPromise    = require("./is-promise");
+
+module.exports = function (value) {
+	if (!isPromise(value)) throw new TypeError(safeToString(value) + " is not a thenable");
+	return value;
+};