How can I install Lazysizes on a 2.0 theme?

[alek1986]

Hi

I used to have lazyloading setup in my theme.

I have currently updated my theme to 2.0 with JSON templates. 

I'm trying to identify image source files but it seems a little bit different from what it used to be.

I don't see any more src attributes here.

FYI, I'm installing lazysizes library and I'm following these instructions.

I would appreciate any pointers or directions to take. I use the Empire theme and this is the page centroartesano.es

Thank you