Why isn't there a flexbox polyfill for older browsers like IE9?

Question

Are there some problems that prevent people from creating it? Is it too complicated?

Maybe there is just no need for that?

Was it created it already and I just can't find it?

I imagine it to be a js based library and work this way:

1. It checks if the browser supports flexbox natively;

2. If it doesn't, it parses CSS and checks if an element has flexbox related rules;

3. If it does, it tries to emulate these rules via javascript by calculating all positions and sizes of the children elements and position them using position: absolute;.

Basically, the same thing that Masonry and similar libraries do, but with flexbox rules. Would that be possible to do?

Edit: this question doesn't explain why it can't be done.

Answer 1

There is actually a library that does exactly what I wanted: https://github.com/jonathantneal/flexibility

It's in the very early phase of development, but hopefully it will be viable soon.