Fix.

node_modules/request-promise-core/configure/request2.js

@@ -0,0 +1,74 @@
+'use strict';
+
+var core = require('../'),
+    isArray = require('lodash/isArray'),
+    isFunction = require('lodash/isFunction'),
+    isObjectLike = require('lodash/isObjectLike');
+
+
+module.exports = function (options) {
+
+    var errorText = 'Please verify options'; // For better minification because this string is repeating
+
+    if (!isObjectLike(options)) {
+        throw new TypeError(errorText);
+    }
+
+    if (!isFunction(options.request)) {
+        throw new TypeError(errorText + '.request');
+    }
+
+    if (!isArray(options.expose) || options.expose.length === 0) {
+        throw new TypeError(errorText + '.expose');
+    }
+
+
+    var plumbing = core({
+        PromiseImpl: options.PromiseImpl,
+        constructorMixin: options.constructorMixin
+    });
+
+
+    // Intercepting Request's init method
+
+    var originalInit = options.request.Request.prototype.init;
+
+    options.request.Request.prototype.init = function RP$initInterceptor(requestOptions) {
+
+        // Init may be called again - currently in case of redirects
+        if (isObjectLike(requestOptions) && !this._callback && !this._rp_promise) {
+
+            plumbing.init.call(this, requestOptions);
+
+        }
+
+        return originalInit.apply(this, arguments);
+
+    };
+
+
+    // Exposing the Promise capabilities
+
+    var thenExposed = false;
+    for ( var i = 0; i < options.expose.length; i+=1 ) {
+
+        var method = options.expose[i];
+
+        plumbing[ method === 'promise' ? 'exposePromise' : 'exposePromiseMethod' ](
+            options.request.Request.prototype,
+            null,
+            '_rp_promise',
+            method
+        );
+
+        if (method === 'then') {
+            thenExposed = true;
+        }
+
+    }
+
+    if (!thenExposed) {
+        throw new Error('Please expose "then"');
+    }
+
+};