1 [
   2   {
   3     "endPosition": "10",
   4     "kind": "IDENTIFIER",
   5     "name": "undefined",
   6     "startPosition": "1"
   7   },
   8   {
   9     "endPosition": "14",
  10     "kind": "IDENTIFIER",
  11     "name": "NaN",
  12     "startPosition": "11"
  13   },
  14   {
  15     "endPosition": "16",
  16     "kind": "IDENTIFIER",
  17     "name": "a",
  18     "startPosition": "15"
  19   },
  20   {
  21     "endPosition": "20",
  22     "kind": "IDENTIFIER",
  23     "name": "a23",
  24     "startPosition": "17"
  25   },
  26   {
  27     "endPosition": "29",
  28     "kind": "IDENTIFIER",
  29     "name": "var_name",
  30     "startPosition": "21"
  31   },
  32   {
  33     "endPosition": "41",
  34     "kind": "IDENTIFIER",
  35     "name": "_underscore",
  36     "startPosition": "30"
  37   },
  38   {
  39     "endPosition": "49",
  40     "kind": "IDENTIFIER",
  41     "name": "$dollar",
  42     "startPosition": "42"
  43   }
  44 ]