Transpiling to other Markdown formats

[lukehutch]

I need a PHP Markdown parser that can be used to transpile to other Markdown formats, in particular Slack-flavored Markdown (which doesn't support tables, so tables need to be rendered as ASCII art in a code block).

Can Parsedown do this? In other words, is it possible to get the parsed Markdown AST, implement rewriting operations on it, and then re-render the AST back to Markdown?

If not, please consider this as a feature request :-)