{
  "!name": "basic.js",
  "x": {
    "!span": "4[0:4]-5[0:5]",
    "!type": "number"
  },
  "y": {
    "!span": "16[1:4]-17[1:5]",
    "bar": {
      "!span": "35[3:2]-38[3:5]",
      "!type": "string"
    },
    "foo": {
      "!span": "24[2:2]-27[2:5]",
      "!type": "number"
    }
  }
}