hello-world.hbs

<h1>Hello {{name}}!</h1>

output-a.js

// Compiled hello-world.hbs in old engine
(function() {
  return {
    meta: {
      "revision": "Ember@1.13.5",
      "loc": {
        "source": null,
        "start": {
          "line": 1,
          "column": 0
        },
        "end": {
          "line": 1,
          "column": 23
        }
      }
    },
    arity: 0,
    cachedFragment: null,
    hasRendered: false,
    buildFragment: function buildFragment(dom) {
      var el0 = dom.createDocumentFragment();
      var el1 = dom.createElement("h1");
      var el2 = dom.createTextNode("Hello ");
      dom.appendChild(el1, el2);
      var el2 = dom.createComment("");
      dom.appendChild(el1, el2);
      dom.appendChild(el0, el1);
      return el0;
    },
    buildRenderNodes: function buildRenderNodes(dom, fragment, contextualElement) {
      var morphs = new Array(1);
      morphs[0] = dom.createMorphAt(dom.childAt(fragment, [0]),1,1);
      return morphs;
    },
    statements: [
      ["content","name",["loc",[null,[1,10],[1,18]]]]
    ],
    locals: [],
    templates: []
  };
}())

output-b.js

// Compiled hello-world.hbs in new engine
{
  "statements": [
    [
      11,
      "h1",
      []
    ],
    [
      13
    ],
    [
      0,
      "Hello "
    ],
    [
      1,
      [
        26,
        [
          "name"
        ]
      ],
      false
    ],
    [
      14
    ]
  ],
  "locals": [],
  "named": [],
  "yields": [],
  "hasPartials": false
}