[
  {
    "type": "identifier",
    "value": "const"
  },
  {
    "type": "identifier",
    "value": "foo"
  },
  {
    "type": "operator",
    "value": "="
  },
  {
    "type": "punctuator",
    "value": "["
  },
  {
    "type": "identifier",
    "value": "args"
  },
  {
    "type": "punctuator",
    "value": "]"
  },
  {
    "type": "punctuator",
    "value": "."
  },
  {
    "type": "identifier",
    "value": "concat"
  },
  {
    "type": "punctuator",
    "value": "("
  },
  {
    "type": "identifier",
    "value": "arr"
  },
  {
    "type": "punctuator",
    "value": ")"
  },
  {
    "type": "indention",
    "value": 0
  }
]