{
  "worlds": [
    {
      "name": "name",
      "imports": {
        "name": {
          "interface": {
            "id": 1
          }
        }
      },
      "exports": {},
      "package": 0
    }
  ],
  "interfaces": [
    {
      "name": "x",
      "types": {},
      "functions": {},
      "package": 0
    },
    {
      "name": null,
      "types": {},
      "functions": {},
      "package": 0
    }
  ],
  "types": [],
  "packages": [
    {
      "name": "foo:name",
      "interfaces": {
        "x": 0
      },
      "worlds": {
        "name": 0
      }
    }
  ]
}