{
  "type": "File",
  "start": 0,
  "end": 6,
  "loc": {
    "start": {
      "line": 1,
      "column": 0
    },
    "end": {
      "line": 1,
      "column": 6
    }
  },
  "program": {
    "type": "Program",
    "start": 0,
    "end": 6,
    "loc": {
      "start": {
        "line": 1,
        "column": 0
      },
      "end": {
        "line": 1,
        "column": 6
      }
    },
    "sourceType": "script",
    "interpreter": null,
    "body": [
      {
        "type": "ExpressionStatement",
        "start": 0,
        "end": 6,
        "loc": {
          "start": {
            "line": 1,
            "column": 0
          },
          "end": {
            "line": 1,
            "column": 6
          }
        },
        "expression": {
          "type": "CallExpression",
          "start": 0,
          "end": 6,
          "loc": {
            "start": {
              "line": 1,
              "column": 0
            },
            "end": {
              "line": 1,
              "column": 6
            }
          },
          "callee": {
            "type": "Identifier",
            "start": 0,
            "end": 3,
            "loc": {
              "start": {
                "line": 1,
                "column": 0
              },
              "end": {
                "line": 1,
                "column": 3
              },
              "identifierName": "foo"
            },
            "name": "foo"
          },
          "arguments": [
            {
              "type": "ArgumentPlaceholder",
              "start": 4,
              "end": 5,
              "loc": {
                "start": {
                  "line": 1,
                  "column": 4
                },
                "end": {
                  "line": 1,
                  "column": 5
                }
              }
            }
          ]
        }
      }
    ],
    "directives": []
  }
}