index.js

/* jshint node: true */
'use strict';

var Funnel      = require('broccoli-funnel');
var treeJson    = require("broccoli-tree-to-json");
var MergeTrees  = require("broccoli-merge-trees");
var replace     = require("broccoli-replace");
var path        = require("path");
module.exports = {
  name: 'ember-cli-lazy-load',

  blueprintsPath: function() {
    return path.join(__dirname, 'blueprints');
  },
  included: function(app, parentAddon) {
    this._super.included(app,parentAddon);
    var target = (parentAddon || app);

    // Now you can modify the app / parentAddon. For example, if you wanted
    // to include a custom preprocessor, you could add it to the target's
    // registry:
    //

    var options;
    //shortcut for disable this
    if(this.app.options.bundles === false){
        options = false;
    }else {
      options = this.app.options.bundles = this.app.options.bundles || {};
    }

  },
  contentFor: function(type,config) {
    if (type === 'head-footer') {
      return '<meta name="ember-asset-map" content="@@assetMap"/>';
    }
  },
  postprocessTree: function(type,tree) {
    if(type != "all"){
      return tree;
    }

    var assets  = {}
    var workingTree = new Funnel(tree, {
      getDestinationPath: function(relativePath) {
        var list = relativePath.split(".").map((name)=>{
          if(name.indexOf("bundle")>-1){
            return "bundle"
          }else {
            return name;
          }
        });
        var indexOfBundleStr = list.indexOf("bundle");
        if( indexOfBundleStr  > -1  && list[indexOfBundleStr+1] != "map" )
        assets[list[indexOfBundleStr-1]] = relativePath;
        return relativePath;
      }
    });

    var indexTree = replace(workingTree, {
      files: [
        '**/*.html' // replace only html files in src
      ],
      patterns: [
        {
          match: 'assetMap',
          replacement: function(){
            return    encodeURIComponent(JSON.stringify(assets))
          }
        }
      ]
    });

    return new MergeTrees([workingTree,indexTree], {
      overwrite: true
    });
  }
};