Uploading the main structure

node_modules/is-promise/index.js

@@ -0,0 +1,6 @@
+module.exports = isPromise;
+module.exports.default = isPromise;
+
+function isPromise(obj) {
+  return !!obj && (typeof obj === 'object' || typeof obj === 'function') && typeof obj.then === 'function';
+}