🌱 Add support to use rememberDevice param in polling and verify. (#111)

Similar to autoPush, we now support rememberDevice function that will be evaluated before making the request.

Resolves: OKTA-158993

Author: alexeystadnikov-okta

lib/tx.js

@@ -89,9 +89,18 @@ function getPollFn(sdk, res, ref) {
       else if (autoPush !== undefined && autoPush !== null) {
         opts.autoPush = !!autoPush;
       }
-      if (rememberDevice) {
-        opts.rememberDevice = true;
+      if (typeof rememberDevice === 'function') {
+        try {
+          opts.rememberDevice = !!rememberDevice();
+        }
+        catch (e) {
+          return Q.reject(new AuthSdkError('RememberDevice resulted in an error.'));
+        }
+      }
+      else if (rememberDevice !== undefined && rememberDevice !== null) {
+        opts.rememberDevice = !!rememberDevice;
       }
+
       var href = pollLink.href + util.toQueryParams(opts);
       return http.post(sdk, href, getStateToken(res), {
         saveAuthnState: false  
@@ -210,9 +219,18 @@ function link2fn(sdk, res, obj, link, ref) {
             data = util.omit(data, 'autoPush');
           }
 
-          if (data.rememberDevice !== undefined) {
-            if (data.rememberDevice) {
-              params.rememberDevice = true;
+          var rememberDevice = data.rememberDevice;
+          if (rememberDevice !== undefined) {
+            if (typeof rememberDevice === 'function') {
+              try {
+                params.rememberDevice = !!rememberDevice();
+              }
+              catch (e) {
+                return Q.reject(new AuthSdkError('RememberDevice resulted in an error.'));
+              }
+            }
+            else if (rememberDevice !== null) {
+              params.rememberDevice = !!rememberDevice;
             }
             data = util.omit(data, 'rememberDevice');