{ "type": "File", "start":0,"end":53,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":1}}, "errors": [ "SyntaxError: Yield expression is not allowed in formal parameters (2:15)" ], "program": { "type": "Program", "start":0,"end":53,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":1}}, "sourceType": "script", "interpreter": null, "body": [ { "type": "FunctionDeclaration", "start":0,"end":53,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":1}}, "id": { "type": "Identifier", "start":10,"end":12,"loc":{"start":{"line":1,"column":10},"end":{"line":1,"column":12},"identifierName":"fn"}, "name": "fn" }, "generator": true, "async": false, "params": [], "body": { "type": "BlockStatement", "start":15,"end":53,"loc":{"start":{"line":1,"column":15},"end":{"line":3,"column":1}}, "body": [ { "type": "ExpressionStatement", "start":19,"end":51,"loc":{"start":{"line":2,"column":2},"end":{"line":2,"column":34}}, "expression": { "type": "ArrowFunctionExpression", "start":19,"end":50,"loc":{"start":{"line":2,"column":2},"end":{"line":2,"column":33}}, "id": null, "generator": false, "async": false, "params": [ { "type": "AssignmentPattern", "start":20,"end":43,"loc":{"start":{"line":2,"column":3},"end":{"line":2,"column":26}}, "left": { "type": "Identifier", "start":20,"end":21,"loc":{"start":{"line":2,"column":3},"end":{"line":2,"column":4},"identifierName":"x"}, "name": "x" }, "right": { "type": "BinaryExpression", "start":24,"end":43,"loc":{"start":{"line":2,"column":7},"end":{"line":2,"column":26}}, "left": { "type": "NumericLiteral", "start":24,"end":25,"loc":{"start":{"line":2,"column":7},"end":{"line":2,"column":8}}, "extra": { "rawValue": 3, "raw": "3" }, "value": 3 }, "operator": "+", "right": { "type": "BinaryExpression", "start":28,"end":43,"loc":{"start":{"line":2,"column":11},"end":{"line":2,"column":26}}, "left": { "type": "CallExpression", "start":28,"end":38,"loc":{"start":{"line":2,"column":11},"end":{"line":2,"column":21}}, "callee": { "type": "MemberExpression", "start":28,"end":31,"loc":{"start":{"line":2,"column":11},"end":{"line":2,"column":14}}, "object": { "type": "Identifier", "start":28,"end":29,"loc":{"start":{"line":2,"column":11},"end":{"line":2,"column":12},"identifierName":"a"}, "name": "a" }, "computed": false, "property": { "type": "Identifier", "start":30,"end":31,"loc":{"start":{"line":2,"column":13},"end":{"line":2,"column":14},"identifierName":"b"}, "name": "b" } }, "arguments": [ { "type": "YieldExpression", "start":32,"end":37,"loc":{"start":{"line":2,"column":15},"end":{"line":2,"column":20}}, "delegate": false, "argument": null } ] }, "operator": "**", "right": { "type": "NumericLiteral", "start":42,"end":43,"loc":{"start":{"line":2,"column":25},"end":{"line":2,"column":26}}, "extra": { "rawValue": 2, "raw": "2" }, "value": 2 } } } } ], "body": { "type": "BlockStatement", "start":48,"end":50,"loc":{"start":{"line":2,"column":31},"end":{"line":2,"column":33}}, "body": [], "directives": [] } } } ], "directives": [] } } ], "directives": [] } }