{ "type": "Script", "span": { "start": 53, "end": 264, "ctxt": 0 }, "body": [ { "type": "ClassDeclaration", "identifier": { "type": "Identifier", "span": { "start": 59, "end": 63, "ctxt": 0 }, "value": "Base", "optional": false }, "declare": false, "span": { "start": 53, "end": 148, "ctxt": 0 }, "decorators": [], "body": [ { "type": "ClassMethod", "span": { "start": 68, "end": 89, "ctxt": 0 }, "key": { "type": "Identifier", "span": { "start": 72, "end": 73, "ctxt": 0 }, "value": "x", "optional": false }, "function": { "params": [], "decorators": [], "span": { "start": 68, "end": 89, "ctxt": 0 }, "body": { "type": "BlockStatement", "span": { "start": 76, "end": 89, "ctxt": 0 }, "stmts": [ { "type": "ReturnStatement", "span": { "start": 78, "end": 87, "ctxt": 0 }, "argument": { "type": "NumericLiteral", "span": { "start": 85, "end": 86, "ctxt": 0 }, "value": 2.0 } } ] }, "generator": false, "async": false, "typeParameters": null, "returnType": null }, "kind": "getter", "isStatic": false, "accessibility": null, "isAbstract": false, "isOptional": false, "isOverride": false }, { "type": "ClassMethod", "span": { "start": 92, "end": 146, "ctxt": 0 }, "key": { "type": "Identifier", "span": { "start": 96, "end": 97, "ctxt": 0 }, "value": "x", "optional": false }, "function": { "params": [ { "type": "Parameter", "span": { "start": 98, "end": 103, "ctxt": 0 }, "decorators": [], "pat": { "type": "Identifier", "span": { "start": 98, "end": 103, "ctxt": 0 }, "value": "value", "optional": false, "typeAnnotation": null } } ], "decorators": [], "span": { "start": 92, "end": 146, "ctxt": 0 }, "body": { "type": "BlockStatement", "span": { "start": 105, "end": 146, "ctxt": 0 }, "stmts": [ { "type": "ExpressionStatement", "span": { "start": 107, "end": 144, "ctxt": 0 }, "expression": { "type": "CallExpression", "span": { "start": 107, "end": 143, "ctxt": 0 }, "callee": { "type": "MemberExpression", "span": { "start": 107, "end": 118, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 107, "end": 114, "ctxt": 0 }, "value": "console", "optional": false }, "property": { "type": "Identifier", "span": { "start": 115, "end": 118, "ctxt": 0 }, "value": "log", "optional": false } }, "arguments": [ { "spread": null, "expression": { "type": "TemplateLiteral", "span": { "start": 119, "end": 142, "ctxt": 0 }, "expressions": [ { "type": "Identifier", "span": { "start": 135, "end": 140, "ctxt": 0 }, "value": "value", "optional": false } ], "quasis": [ { "type": "TemplateElement", "span": { "start": 120, "end": 133, "ctxt": 0 }, "tail": false, "cooked": "x was set to ", "raw": "x was set to " }, { "type": "TemplateElement", "span": { "start": 141, "end": 141, "ctxt": 0 }, "tail": true, "cooked": "", "raw": "" } ] } } ], "typeArguments": null } } ] }, "generator": false, "async": false, "typeParameters": null, "returnType": null }, "kind": "setter", "isStatic": false, "accessibility": null, "isAbstract": false, "isOptional": false, "isOverride": false } ], "superClass": null, "isAbstract": false, "typeParams": null, "superTypeParams": null, "implements": [] }, { "type": "ClassDeclaration", "identifier": { "type": "Identifier", "span": { "start": 156, "end": 163, "ctxt": 0 }, "value": "Derived", "optional": false }, "declare": false, "span": { "start": 150, "end": 189, "ctxt": 0 }, "decorators": [], "body": [ { "type": "ClassProperty", "span": { "start": 181, "end": 187, "ctxt": 0 }, "key": { "type": "Identifier", "span": { "start": 181, "end": 182, "ctxt": 0 }, "value": "x", "optional": false }, "value": { "type": "NumericLiteral", "span": { "start": 185, "end": 186, "ctxt": 0 }, "value": 1.0 }, "typeAnnotation": null, "isStatic": false, "decorators": [], "accessibility": null, "isAbstract": false, "isOptional": false, "isOverride": false, "readonly": false, "declare": false, "definite": false } ], "superClass": { "type": "Identifier", "span": { "start": 172, "end": 176, "ctxt": 0 }, "value": "Base", "optional": false }, "isAbstract": false, "typeParams": null, "superTypeParams": null, "implements": [] }, { "type": "VariableDeclaration", "span": { "start": 191, "end": 217, "ctxt": 0 }, "kind": "const", "declare": false, "declarations": [ { "type": "VariableDeclarator", "span": { "start": 197, "end": 216, "ctxt": 0 }, "id": { "type": "Identifier", "span": { "start": 197, "end": 200, "ctxt": 0 }, "value": "obj", "optional": false, "typeAnnotation": null }, "init": { "type": "NewExpression", "span": { "start": 203, "end": 216, "ctxt": 0 }, "callee": { "type": "Identifier", "span": { "start": 207, "end": 214, "ctxt": 0 }, "value": "Derived", "optional": false }, "arguments": [], "typeArguments": null }, "definite": false } ] }, { "type": "ExpressionStatement", "span": { "start": 245, "end": 264, "ctxt": 0 }, "expression": { "type": "CallExpression", "span": { "start": 245, "end": 263, "ctxt": 0 }, "callee": { "type": "MemberExpression", "span": { "start": 245, "end": 256, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 245, "end": 252, "ctxt": 0 }, "value": "console", "optional": false }, "property": { "type": "Identifier", "span": { "start": 253, "end": 256, "ctxt": 0 }, "value": "log", "optional": false } }, "arguments": [ { "spread": null, "expression": { "type": "MemberExpression", "span": { "start": 257, "end": 262, "ctxt": 0 }, "object": { "type": "Identifier", "span": { "start": 257, "end": 260, "ctxt": 0 }, "value": "obj", "optional": false }, "property": { "type": "Identifier", "span": { "start": 261, "end": 262, "ctxt": 0 }, "value": "x", "optional": false } } } ], "typeArguments": null } } ], "interpreter": null }