BUG: createElement not accepting first argument as function

[manico]

Version

2.5.13

Reproduction link

https://codepen.io/manico/pen/KoqRYq

Steps to reproduce

Create render function with first argument as function that returns html tag.

What is expected?

Element should render.
https://codepen.io/manico/pen/JLJvQw

What is actually happening?

Element is not rendered.
https://codepen.io/manico/pen/KoqRYq

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According to documentation (https://vuejs.org/v2/guide/render-function.html#createElement-Arguments), first argument of createElement function can be function that returns html tag name or component options. When we have function that returns html tag name this does not work.

As far as I can see (not sure if I'm looking in the right place https://github.com/vuejs/vue/blob/dev/src/core/vdom/create-element.js#L96) there is no handling of function for tag. So maybe documentation is out of date?

[HerringtonDarkholme]

I believe this is a documentation problem. Function should be a constructor of Vue subclass created by Vue.extend.

[javoski]

As the first argument of createElement, the function should be an async factory that will finally resolve a component definition, see https://vuejs.org/v2/guide/components.html#Async-Components

[manico]

Maybe documentation should be changed as it clearly states:
https://vuejs.org/v2/guide/render-function.html#createElement-Arguments

HTML tag name, component options, or function returning one of these. Required.

[Jfs007]

I want to use function as first argument, this is my code

but it looks like it's going to cause an infinite loop
and it's not working