Synchronous transformer

[hallaji]

Hi there 👋

I was wondering whether there is a synchronous transformer of the plugin or not? My website is statically generated and I am using a synchronous processor. That throws an error because inlineSVG is configured asynchronously.

[JamesMessinger]

Currently everything is written asynchronously, including all file I/O and SVG optimization. It would be pretty trivial to write a synchronous version of the file I/O, but the SVG optimization is a different story. I use svgo to do the optimization, and it only provides an async API.