{ "type": "Module", "span": { "start": 44, "end": 149, "ctxt": 0 }, "body": [ { "type": "TsInterfaceDeclaration", "span": { "start": 44, "end": 74, "ctxt": 0 }, "id": { "type": "Identifier", "span": { "start": 54, "end": 55, "ctxt": 0 }, "value": "I", "optional": false }, "declare": false, "typeParams": null, "extends": [], "body": { "type": "TsInterfaceBody", "span": { "start": 56, "end": 74, "ctxt": 0 }, "body": [ { "type": "TsPropertySignature", "span": { "start": 62, "end": 72, "ctxt": 0 }, "readonly": false, "key": { "type": "Identifier", "span": { "start": 62, "end": 63, "ctxt": 0 }, "value": "a", "optional": false }, "computed": false, "optional": false, "init": null, "params": [], "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 63, "end": 71, "ctxt": 0 }, "typeAnnotation": { "type": "TsKeywordType", "span": { "start": 65, "end": 71, "ctxt": 0 }, "kind": "number" } }, "typeParams": null } ] } }, { "type": "ExportDeclaration", "span": { "start": 76, "end": 149, "ctxt": 0 }, "declaration": { "type": "FunctionDeclaration", "identifier": { "type": "Identifier", "span": { "start": 92, "end": 93, "ctxt": 0 }, "value": "f", "optional": false }, "declare": false, "params": [ { "type": "Parameter", "span": { "start": 94, "end": 100, "ctxt": 0 }, "decorators": [], "pat": { "type": "Identifier", "span": { "start": 94, "end": 100, "ctxt": 0 }, "value": "x", "optional": false, "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 95, "end": 100, "ctxt": 0 }, "typeAnnotation": { "type": "TsKeywordType", "span": { "start": 97, "end": 100, "ctxt": 0 }, "kind": "any" } } } } ], "decorators": [], "span": { "start": 83, "end": 149, "ctxt": 0 }, "body": { "type": "BlockStatement", "span": { "start": 110, "end": 149, "ctxt": 0 }, "stmts": [ { "type": "ReturnStatement", "span": { "start": 116, "end": 147, "ctxt": 0 }, "argument": { "type": "BinaryExpression", "span": { "start": 123, "end": 146, "ctxt": 0 }, "operator": "===", "left": { "type": "UnaryExpression", "span": { "start": 123, "end": 133, "ctxt": 0 }, "operator": "typeof", "argument": { "type": "MemberExpression", "span": { "start": 130, "end": 133, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 130, "end": 131, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 132, "end": 133, "ctxt": 0 }, "value": "a", "optional": false } } }, "right": { "type": "StringLiteral", "span": { "start": 138, "end": 146, "ctxt": 0 }, "value": "number", "raw": "\"number\"" } } } ] }, "generator": false, "async": false, "typeParameters": null, "returnType": { "type": "TsTypeAnnotation", "span": { "start": 101, "end": 109, "ctxt": 0 }, "typeAnnotation": { "type": "TsTypePredicate", "span": { "start": 103, "end": 109, "ctxt": 0 }, "asserts": false, "paramName": { "type": "Identifier", "span": { "start": 103, "end": 104, "ctxt": 0 }, "value": "x", "optional": false }, "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 108, "end": 109, "ctxt": 0 }, "typeAnnotation": { "type": "TsTypeReference", "span": { "start": 108, "end": 109, "ctxt": 0 }, "typeName": { "type": "Identifier", "span": { "start": 108, "end": 109, "ctxt": 0 }, "value": "I", "optional": false }, "typeParams": null } } } } } } ], "interpreter": null }