Fossil

});

window.fossil.onPageLoad(function(){
  const F = window.fossil, D = F.dom;
  const Diff = F.diff = {
    e:{/*certain cached DOM elements*/},
    config: {
      chunkLoadLines: 30 /* TODO: 3x default context diff value */,
      chunkFetch: {
        /* Default callack handlers for Diff.fetchArtifactChunk(),
           unless overridden by options passeed to that function. */
        beforesend: function(){},
        aftersend: function(){},
        onerror: function(e){
          F.toast.error("XHR error: ",e.message);

      }
      b.addEventListener('click', ()=>this.fetchChunk(direction),false);
      return b;
    },

    updatePosDebug: function(){
      if(this.e.posState){
        D.clearElement(this.e.posState);
        //D.append(D.clearElement(this.e.posState), JSON.stringify(this.pos));
      }
      return this;
    },

    /* Attempt to clean up resources and remove some circular references to
       that GC can do the right thing. */
    destroy: function(){