{ "type": "Script", "span": { "start": 0, "end": 586, "ctxt": 0 }, "body": [ { "type": "FunctionDeclaration", "identifier": { "type": "Identifier", "span": { "start": 17, "end": 27, "ctxt": 0 }, "value": "isFooError", "optional": false }, "declare": true, "params": [ { "type": "Parameter", "span": { "start": 28, "end": 34, "ctxt": 0 }, "decorators": [], "pat": { "type": "Identifier", "span": { "start": 28, "end": 34, "ctxt": 0 }, "value": "x", "optional": false, "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 29, "end": 34, "ctxt": 0 }, "typeAnnotation": { "type": "TsKeywordType", "span": { "start": 31, "end": 34, "ctxt": 0 }, "kind": "any" } } } } ], "decorators": [], "span": { "start": 0, "end": 72, "ctxt": 0 }, "body": null, "generator": false, "async": false, "typeParameters": null, "returnType": { "type": "TsTypeAnnotation", "span": { "start": 35, "end": 71, "ctxt": 0 }, "typeAnnotation": { "type": "TsTypePredicate", "span": { "start": 37, "end": 71, "ctxt": 0 }, "asserts": false, "paramName": { "type": "Identifier", "span": { "start": 37, "end": 38, "ctxt": 0 }, "value": "x", "optional": false }, "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 42, "end": 71, "ctxt": 0 }, "typeAnnotation": { "type": "TsTypeLiteral", "span": { "start": 42, "end": 71, "ctxt": 0 }, "members": [ { "type": "TsPropertySignature", "span": { "start": 44, "end": 56, "ctxt": 0 }, "readonly": false, "key": { "type": "Identifier", "span": { "start": 44, "end": 48, "ctxt": 0 }, "value": "type", "optional": false }, "computed": false, "optional": false, "init": null, "params": [], "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 48, "end": 55, "ctxt": 0 }, "typeAnnotation": { "type": "TsLiteralType", "span": { "start": 50, "end": 55, "ctxt": 0 }, "literal": { "type": "StringLiteral", "span": { "start": 50, "end": 55, "ctxt": 0 }, "value": "foo", "raw": "'foo'" } } }, "typeParams": null }, { "type": "TsMethodSignature", "span": { "start": 57, "end": 69, "ctxt": 0 }, "readonly": false, "key": { "type": "Identifier", "span": { "start": 57, "end": 66, "ctxt": 0 }, "value": "dontPanic", "optional": false }, "computed": false, "optional": false, "params": [], "typeAnn": null, "typeParams": null } ] } } } } }, { "type": "FunctionDeclaration", "identifier": { "type": "Identifier", "span": { "start": 83, "end": 91, "ctxt": 0 }, "value": "tryCatch", "optional": false }, "declare": false, "params": [], "decorators": [], "span": { "start": 74, "end": 586, "ctxt": 0 }, "body": { "type": "BlockStatement", "span": { "start": 94, "end": 586, "ctxt": 0 }, "stmts": [ { "type": "TryStatement", "span": { "start": 100, "end": 584, "ctxt": 0 }, "block": { "type": "BlockStatement", "span": { "start": 104, "end": 134, "ctxt": 0 }, "stmts": [] }, "handler": { "type": "CatchClause", "span": { "start": 139, "end": 584, "ctxt": 0 }, "param": { "type": "Identifier", "span": { "start": 146, "end": 149, "ctxt": 0 }, "value": "err", "optional": false, "typeAnnotation": null }, "body": { "type": "BlockStatement", "span": { "start": 151, "end": 584, "ctxt": 0 }, "stmts": [ { "type": "IfStatement", "span": { "start": 213, "end": 578, "ctxt": 0 }, "test": { "type": "CallExpression", "span": { "start": 217, "end": 232, "ctxt": 0 }, "callee": { "type": "Identifier", "span": { "start": 217, "end": 227, "ctxt": 0 }, "value": "isFooError", "optional": false }, "arguments": [ { "spread": null, "expression": { "type": "Identifier", "span": { "start": 228, "end": 231, "ctxt": 0 }, "value": "err", "optional": false } } ], "typeArguments": null }, "consequent": { "type": "BlockStatement", "span": { "start": 234, "end": 367, "ctxt": 0 }, "stmts": [ { "type": "ExpressionStatement", "span": { "start": 248, "end": 264, "ctxt": 0 }, "expression": { "type": "CallExpression", "span": { "start": 248, "end": 263, "ctxt": 0 }, "callee": { "type": "MemberExpression", "span": { "start": 248, "end": 261, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 248, "end": 251, "ctxt": 0 }, "value": "err", "optional": false }, "property": { "type": "Identifier", "span": { "start": 252, "end": 261, "ctxt": 0 }, "value": "dontPanic", "optional": false } }, "arguments": [], "typeArguments": null } }, { "type": "ExpressionStatement", "span": { "start": 283, "end": 297, "ctxt": 0 }, "expression": { "type": "CallExpression", "span": { "start": 283, "end": 296, "ctxt": 0 }, "callee": { "type": "MemberExpression", "span": { "start": 283, "end": 294, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 283, "end": 286, "ctxt": 0 }, "value": "err", "optional": false }, "property": { "type": "Identifier", "span": { "start": 287, "end": 294, "ctxt": 0 }, "value": "doPanic", "optional": false } }, "arguments": [], "typeArguments": null } } ] }, "alternate": { "type": "IfStatement", "span": { "start": 382, "end": 578, "ctxt": 0 }, "test": { "type": "BinaryExpression", "span": { "start": 386, "end": 406, "ctxt": 0 }, "operator": "instanceof", "left": { "type": "Identifier", "span": { "start": 386, "end": 389, "ctxt": 0 }, "value": "err", "optional": false }, "right": { "type": "Identifier", "span": { "start": 401, "end": 406, "ctxt": 0 }, "value": "Error", "optional": false } }, "consequent": { "type": "BlockStatement", "span": { "start": 408, "end": 529, "ctxt": 0 }, "stmts": [ { "type": "ExpressionStatement", "span": { "start": 422, "end": 434, "ctxt": 0 }, "expression": { "type": "MemberExpression", "span": { "start": 422, "end": 433, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 422, "end": 425, "ctxt": 0 }, "value": "err", "optional": false }, "property": { "type": "Identifier", "span": { "start": 426, "end": 433, "ctxt": 0 }, "value": "message", "optional": false } } }, { "type": "ExpressionStatement", "span": { "start": 447, "end": 459, "ctxt": 0 }, "expression": { "type": "MemberExpression", "span": { "start": 447, "end": 458, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 447, "end": 450, "ctxt": 0 }, "value": "err", "optional": false }, "property": { "type": "Identifier", "span": { "start": 451, "end": 458, "ctxt": 0 }, "value": "massage", "optional": false } } } ] }, "alternate": { "type": "BlockStatement", "span": { "start": 544, "end": 578, "ctxt": 0 }, "stmts": [ { "type": "ThrowStatement", "span": { "start": 558, "end": 568, "ctxt": 0 }, "argument": { "type": "Identifier", "span": { "start": 564, "end": 567, "ctxt": 0 }, "value": "err", "optional": false } } ] } } } ] } }, "finalizer": null } ] }, "generator": false, "async": false, "typeParameters": null, "returnType": null } ], "interpreter": null }