If you're like me and you use this method of passing variables a lot, here's a write-less-code solution.
In your node.js route, pass the variables in an object called window, like this:
router.get('/', function (req, res, next) {
res.render('index', {
window: {
instance: instance
}
});
});
Then in your pug/jade layout file (just before the block content), you get them out like this:
if window
each object, key in window
script.
window.!{key} = !{JSON.stringify(object)};
As my layout.pug file gets loaded with each pug file, I don't need to 'import' my variables over and over.
This way all variables/objects passed to window 'magically' end up in the real window object of your browser where you can use them in Reactjs, Angular, ... or vanilla javascript.