This, of course, isn't exactly what you want, but what about difftastic?[0] It claims it supports JSON [1] [0] https://github.com/Wilfred/difftastic https://g

This, of course, isn't exactly what you want, but what about difftastic?[0] It claims it supports JSON [1] [0] https://github.com/Wilfred/difftastic https://github.com/Wilfred/difftastic [1] https://difftastic.wilfred.me.uk/languages_supported.html https://difftastic.wilfred.me.uk/languages_supported.html