Syntax Error

What This Error Means

This error occurs when the JavaScript interpreter is expecting a JSON object but encounters a class definition instead, which is a syntax error in JSON.

Why It Happens

This error typically happens when the code is trying to parse a JSON string that contains a class definition. In JavaScript, class definitions are not allowed in JSON, as JSON is used for data interchange and class definitions are a part of the JavaScript syntax.

How to Fix It

1. 1To fix this error, you need to remove the class definition from the JSON string. If you're using a string as a JSON object, make sure it's properly formatted and doesn't contain any JavaScript syntax. Alternatively, you can use a JavaScript object literal instead of a JSON string. For example:
2. 2// Before (broken code)
3. 3const obj = JSON.parse('{ class MyClass { } }');
4. 4// After (fixed code)
5. 5const obj = { myClass: MyClass };

Example Code Solution

const obj = JSON.parse('{ class MyClass { } }');

const obj = { myClass: MyClass };