Creating publishing page in specific folder and with custom page layout using JSOM

Question

Hi!
I have a site collection under my root, in which I have a page library with a folder inside. I want to create a publishing page inside the folder using JSOM. The API provides the following information on the three possible ways of how you can create a publishing
page.
PublishingPageInformation with all defaults.
PublishingPageInformation.Name and PublishingPageInformation.PageLayoutListItem.
PublishingPageInformation.Name, PublishingPageInformation.PageLayoutListItem and PublishingPageInformation.Folder.
Source - SP.Publishing.PublishingPageInformation Properties (sp.publishing)
Since I want to create the page in a specific folder in the page library, I have to go for the last option.
I have a function call chain that look as follows:
getLanguageID(webUrl, languageID)
.then(function(resolveVal) {
language = resolveVal;
return checkPageExist();
.then(getEditorialNewsFolderJSOM)
.then(getAssociatedPageLayoutListItem)
.then(addPublishingPage)
The first two methods, 
getEditorialNewsFolderJSOM
getAssociatedPageLayoutListItem
fetches the required data as SP.Folder- and SP.ListItem-objects.
The problem occurs when
addPublishingPage
is called. This method, in turns calls this function. 
var pageInfo = new SP.Publishing.PublishingPageInformation();
pageInfo.set_name(publishPage.title);
pageInfo.set_pageLayoutListItem(pageLayoutListItem);
pageInfo.set_folder(editorialNewsFolder);
pageCreationContext.newPage = pubWeb.addPublishingPage(pageInfo);
clientContext.load(pageCreationContext.newPage);
clientContext.executeQueryAsync(function() {
publishPage.isPageCheckOut = true;
resolve();
}, function(error) {
reject(precio.intranet.resource.errCreateContent_addPublishPage);
The error happens when this function is called with the page information object.
SP.Publishing.PublishingWeb.addPublishingPage(pageInformation)
Error:
Cannot read property '$2t_0' of undefined
and it happens in SP.Runtime.js.
I've tried this
sample code from the MSDN-team, and added the pagelayout and folder properties, but it renders the same error.
Creating a page directly in the page library with a blank SP.PublishingPageInformation object works perfectly fine!
What could possibly be wrong? The error isn't something that I can debug myself since it happens in SP.Runtime.js, and the documentation for this is very sparse!
Any help on how to resolve this issue would be helpful!

Answer 1

Hi Vinay,
This may be useful:
https://blogs.oracle.com/jdevotnharvest/entry/remote_task_flow_vs_wsrp