How to make so that Jade (Node.js) doesn't close the <body> tag

I'm trying to send multiple chunks of data to a client each of which is rendered by Jade templating engine in Express Node.js framework.

I have several views like header, viewA, viewB, viewC, etc.
For every request I need to render the header partial view and send it as a chunk so that the client browser starts rendering it. When the header view is rendered I don't want the <body> tag inside to be closed, because more data is to come which should be inside the <body> tag.
In the meantime, I need to do some computations and after that render another view: either A, B, or C.
Once A, B, or C view is sent, I close the response which means closing the </body></html> tags.

Sounds very simple. But the problem is that Jade closes the <html> and <body> tags when rendering the header view.

I know how to do this manually using native Node.js response object, however, can't figure out how to do this with Jade the right way.

The only solution I currently see is to manually send the header part down to open <body> tag, then render the rest as Jade partials via res.partial().

Any hint is highly appreciated.

Solution

You can output any text (including raw html) with !=

!= "<body>"
  some
     more
        tree(attr=1)

Result in this output:

<body>
<some>
  <more>
    <tree attr="1"></tree>
  </more>
</some>