Is SPA possible in bitbucket static website hosting.

[RuiFortes]

Hi.

In github pages there's the possibility to define a custom 404 page containing a script that permits using it in SPA site.
See here

Is there a way to define custom 404 page in bitbucket page?

Meanwhile I found this old post and it seams there's no intention to implement it.

Is there any way to similar single page application in bitbucket static hosting?

Thanks