code: function O(a, b, f) {
    let g = a[a.length - 1];
    g && g.c === b && g.g === f ? a[a.length - 1] = {count:g.count + 1, c:b, g:f} : a.push({count:1, c:b, g:f});
  }
docs: /*
  diff package https://github.com/kpdecker/jsdiff
  BSD License
  Copyright (c) 2009-2015, Kevin Decker <kpdecker@gmail.com>