{ "type": "File", "start":0,"end":86,"loc":{"start":{"line":1,"column":0},"end":{"line":6,"column":1}}, "errors": [ "SyntaxError: Unexpected argument placeholder (3:16)", "SyntaxError: Unexpected argument placeholder (3:19)" ], "program": { "type": "Program", "start":0,"end":86,"loc":{"start":{"line":1,"column":0},"end":{"line":6,"column":1}}, "sourceType": "script", "interpreter": null, "body": [ { "type": "ClassDeclaration", "start":0,"end":86,"loc":{"start":{"line":1,"column":0},"end":{"line":6,"column":1}}, "id": { "type": "Identifier", "start":6,"end":9,"loc":{"start":{"line":1,"column":6},"end":{"line":1,"column":9},"identifierName":"Foo"}, "name": "Foo" }, "superClass": { "type": "Identifier", "start":18,"end":21,"loc":{"start":{"line":1,"column":18},"end":{"line":1,"column":21},"identifierName":"Bar"}, "name": "Bar" }, "body": { "type": "ClassBody", "start":22,"end":86,"loc":{"start":{"line":1,"column":22},"end":{"line":6,"column":1}}, "body": [ { "type": "ClassMethod", "start":26,"end":84,"loc":{"start":{"line":2,"column":2},"end":{"line":5,"column":3}}, "static": false, "key": { "type": "Identifier", "start":26,"end":37,"loc":{"start":{"line":2,"column":2},"end":{"line":2,"column":13},"identifierName":"constructor"}, "name": "constructor" }, "computed": false, "kind": "constructor", "id": null, "generator": false, "async": false, "params": [ { "type": "Identifier", "start":38,"end":39,"loc":{"start":{"line":2,"column":14},"end":{"line":2,"column":15},"identifierName":"x"}, "name": "x" } ], "body": { "type": "BlockStatement", "start":40,"end":84,"loc":{"start":{"line":2,"column":16},"end":{"line":5,"column":3}}, "body": [ { "type": "ExpressionStatement", "start":46,"end":64,"loc":{"start":{"line":3,"column":4},"end":{"line":3,"column":22}}, "expression": { "type": "CallExpression", "start":46,"end":63,"loc":{"start":{"line":3,"column":4},"end":{"line":3,"column":21}}, "callee": { "type": "Super", "start":46,"end":51,"loc":{"start":{"line":3,"column":4},"end":{"line":3,"column":9}} }, "arguments": [ { "type": "Identifier", "start":52,"end":53,"loc":{"start":{"line":3,"column":10},"end":{"line":3,"column":11},"identifierName":"x"}, "name": "x" }, { "type": "NumericLiteral", "start":55,"end":56,"loc":{"start":{"line":3,"column":13},"end":{"line":3,"column":14}}, "extra": { "rawValue": 1, "raw": "1" }, "value": 1 }, { "type": "ArgumentPlaceholder", "start":58,"end":59,"loc":{"start":{"line":3,"column":16},"end":{"line":3,"column":17}} }, { "type": "ArgumentPlaceholder", "start":61,"end":62,"loc":{"start":{"line":3,"column":19},"end":{"line":3,"column":20}} } ] } }, { "type": "ExpressionStatement", "start":69,"end":80,"loc":{"start":{"line":4,"column":4},"end":{"line":4,"column":15}}, "expression": { "type": "AssignmentExpression", "start":69,"end":79,"loc":{"start":{"line":4,"column":4},"end":{"line":4,"column":14}}, "operator": "=", "left": { "type": "MemberExpression", "start":69,"end":75,"loc":{"start":{"line":4,"column":4},"end":{"line":4,"column":10}}, "object": { "type": "ThisExpression", "start":69,"end":73,"loc":{"start":{"line":4,"column":4},"end":{"line":4,"column":8}} }, "property": { "type": "Identifier", "start":74,"end":75,"loc":{"start":{"line":4,"column":9},"end":{"line":4,"column":10},"identifierName":"x"}, "name": "x" }, "computed": false }, "right": { "type": "Identifier", "start":78,"end":79,"loc":{"start":{"line":4,"column":13},"end":{"line":4,"column":14},"identifierName":"x"}, "name": "x" } } } ], "directives": [] } } ] } } ], "directives": [] } }