{ "type": "Script", "span": { "start": 29, "end": 266, "ctxt": 0 }, "body": [ { "type": "FunctionDeclaration", "identifier": { "type": "Identifier", "span": { "start": 38, "end": 39, "ctxt": 0 }, "value": "f", "optional": false }, "declare": false, "params": [], "decorators": [], "span": { "start": 29, "end": 266, "ctxt": 0 }, "body": { "type": "BlockStatement", "span": { "start": 42, "end": 266, "ctxt": 0 }, "stmts": [ { "type": "VariableDeclaration", "span": { "start": 48, "end": 110, "ctxt": 0 }, "kind": "let", "declare": false, "declarations": [ { "type": "VariableDeclarator", "span": { "start": 52, "end": 109, "ctxt": 0 }, "id": { "type": "Identifier", "span": { "start": 52, "end": 53, "ctxt": 0 }, "value": "x", "optional": false, "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 53, "end": 98, "ctxt": 0 }, "typeAnnotation": { "type": "TsTypeLiteral", "span": { "start": 55, "end": 98, "ctxt": 0 }, "members": [ { "type": "TsPropertySignature", "span": { "start": 57, "end": 77, "ctxt": 0 }, "readonly": false, "key": { "type": "Identifier", "span": { "start": 57, "end": 58, "ctxt": 0 }, "value": "a", "optional": false }, "computed": false, "optional": true, "init": null, "params": [], "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 59, "end": 76, "ctxt": 0 }, "typeAnnotation": { "type": "TsUnionType", "span": { "start": 61, "end": 76, "ctxt": 0 }, "types": [ { "type": "TsKeywordType", "span": { "start": 61, "end": 67, "ctxt": 0 }, "kind": "number" }, { "type": "TsKeywordType", "span": { "start": 70, "end": 76, "ctxt": 0 }, "kind": "string" } ] } }, "typeParams": null }, { "type": "TsPropertySignature", "span": { "start": 78, "end": 96, "ctxt": 0 }, "readonly": false, "key": { "type": "Identifier", "span": { "start": 78, "end": 79, "ctxt": 0 }, "value": "b", "optional": false }, "computed": false, "optional": false, "init": null, "params": [], "typeAnnotation": { "type": "TsTypeAnnotation", "span": { "start": 79, "end": 96, "ctxt": 0 }, "typeAnnotation": { "type": "TsUnionType", "span": { "start": 81, "end": 96, "ctxt": 0 }, "types": [ { "type": "TsKeywordType", "span": { "start": 81, "end": 87, "ctxt": 0 }, "kind": "number" }, { "type": "TsKeywordType", "span": { "start": 90, "end": 96, "ctxt": 0 }, "kind": "string" } ] } }, "typeParams": null } ] } } }, "init": { "type": "ObjectExpression", "span": { "start": 101, "end": 109, "ctxt": 0 }, "properties": [ { "type": "KeyValueProperty", "key": { "type": "Identifier", "span": { "start": 103, "end": 104, "ctxt": 0 }, "value": "b", "optional": false }, "value": { "type": "NumericLiteral", "span": { "start": 106, "end": 107, "ctxt": 0 }, "value": 1.0, "raw": "1" } } ] }, "definite": false } ] }, { "type": "ExpressionStatement", "span": { "start": 115, "end": 119, "ctxt": 0 }, "expression": { "type": "MemberExpression", "span": { "start": 115, "end": 118, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 115, "end": 116, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 117, "end": 118, "ctxt": 0 }, "value": "a", "optional": false } } }, { "type": "ExpressionStatement", "span": { "start": 124, "end": 128, "ctxt": 0 }, "expression": { "type": "MemberExpression", "span": { "start": 124, "end": 127, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 124, "end": 125, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 126, "end": 127, "ctxt": 0 }, "value": "b", "optional": false } } }, { "type": "ExpressionStatement", "span": { "start": 133, "end": 141, "ctxt": 0 }, "expression": { "type": "AssignmentExpression", "span": { "start": 133, "end": 140, "ctxt": 0 }, "operator": "=", "left": { "type": "MemberExpression", "span": { "start": 133, "end": 136, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 133, "end": 134, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 135, "end": 136, "ctxt": 0 }, "value": "a", "optional": false } }, "right": { "type": "NumericLiteral", "span": { "start": 139, "end": 140, "ctxt": 0 }, "value": 1.0, "raw": "1" } } }, { "type": "ExpressionStatement", "span": { "start": 146, "end": 154, "ctxt": 0 }, "expression": { "type": "AssignmentExpression", "span": { "start": 146, "end": 153, "ctxt": 0 }, "operator": "=", "left": { "type": "MemberExpression", "span": { "start": 146, "end": 149, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 146, "end": 147, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 148, "end": 149, "ctxt": 0 }, "value": "b", "optional": false } }, "right": { "type": "NumericLiteral", "span": { "start": 152, "end": 153, "ctxt": 0 }, "value": 1.0, "raw": "1" } } }, { "type": "ExpressionStatement", "span": { "start": 159, "end": 163, "ctxt": 0 }, "expression": { "type": "MemberExpression", "span": { "start": 159, "end": 162, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 159, "end": 160, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 161, "end": 162, "ctxt": 0 }, "value": "a", "optional": false } } }, { "type": "ExpressionStatement", "span": { "start": 168, "end": 172, "ctxt": 0 }, "expression": { "type": "MemberExpression", "span": { "start": 168, "end": 171, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 168, "end": 169, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 170, "end": 171, "ctxt": 0 }, "value": "b", "optional": false } } }, { "type": "ExpressionStatement", "span": { "start": 177, "end": 188, "ctxt": 0 }, "expression": { "type": "UnaryExpression", "span": { "start": 177, "end": 187, "ctxt": 0 }, "operator": "delete", "argument": { "type": "MemberExpression", "span": { "start": 184, "end": 187, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 184, "end": 185, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 186, "end": 187, "ctxt": 0 }, "value": "a", "optional": false } } } }, { "type": "ExpressionStatement", "span": { "start": 193, "end": 204, "ctxt": 0 }, "expression": { "type": "UnaryExpression", "span": { "start": 193, "end": 203, "ctxt": 0 }, "operator": "delete", "argument": { "type": "MemberExpression", "span": { "start": 200, "end": 203, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 200, "end": 201, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 202, "end": 203, "ctxt": 0 }, "value": "b", "optional": false } } } }, { "type": "ExpressionStatement", "span": { "start": 209, "end": 213, "ctxt": 0 }, "expression": { "type": "MemberExpression", "span": { "start": 209, "end": 212, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 209, "end": 210, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 211, "end": 212, "ctxt": 0 }, "value": "a", "optional": false } } }, { "type": "ExpressionStatement", "span": { "start": 218, "end": 222, "ctxt": 0 }, "expression": { "type": "MemberExpression", "span": { "start": 218, "end": 221, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 218, "end": 219, "ctxt": 0 }, "value": "x", "optional": false }, "property": { "type": "Identifier", "span": { "start": 220, "end": 221, "ctxt": 0 }, "value": "b", "optional": false } } }, { "type": "ExpressionStatement", "span": { "start": 227, "end": 229, "ctxt": 0 }, "expression": { "type": "Identifier", "span": { "start": 227, "end": 228, "ctxt": 0 }, "value": "x", "optional": false } }, { "type": "ExpressionStatement", "span": { "start": 234, "end": 243, "ctxt": 0 }, "expression": { "type": "UnaryExpression", "span": { "start": 234, "end": 242, "ctxt": 0 }, "operator": "delete", "argument": { "type": "Identifier", "span": { "start": 241, "end": 242, "ctxt": 0 }, "value": "x", "optional": false } } }, { "type": "ExpressionStatement", "span": { "start": 262, "end": 264, "ctxt": 0 }, "expression": { "type": "Identifier", "span": { "start": 262, "end": 263, "ctxt": 0 }, "value": "x", "optional": false } } ] }, "generator": false, "async": false, "typeParameters": null, "returnType": null } ], "interpreter": null }