{ "type": "File", "start":0,"end":20,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":20}}, "program": { "type": "Program", "start":0,"end":20,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":20}}, "sourceType": "script", "interpreter": null, "body": [ { "type": "ExpressionStatement", "start":0,"end":20,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":20}}, "expression": { "type": "CallExpression", "start":0,"end":20,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":20}}, "callee": { "type": "Identifier", "start":0,"end":1,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":1},"identifierName":"f"}, "name": "f" }, "arguments": [ { "type": "Identifier", "start":2,"end":3,"loc":{"start":{"line":1,"column":2},"end":{"line":1,"column":3},"identifierName":"a"}, "name": "a" }, { "type": "CallExpression", "start":5,"end":16,"loc":{"start":{"line":1,"column":5},"end":{"line":1,"column":16}}, "callee": { "type": "Identifier", "start":5,"end":10,"loc":{"start":{"line":1,"column":5},"end":{"line":1,"column":10},"identifierName":"async"}, "name": "async" }, "arguments": [ { "type": "NumericLiteral", "start":11,"end":12,"loc":{"start":{"line":1,"column":11},"end":{"line":1,"column":12}}, "extra": { "rawValue": 1, "raw": "1" }, "value": 1 }, { "type": "NumericLiteral", "start":14,"end":15,"loc":{"start":{"line":1,"column":14},"end":{"line":1,"column":15}}, "extra": { "rawValue": 2, "raw": "2" }, "value": 2 } ] }, { "type": "Identifier", "start":18,"end":19,"loc":{"start":{"line":1,"column":18},"end":{"line":1,"column":19},"identifierName":"b"}, "name": "b" } ] } } ], "directives": [] } }