validateCode method

@override void validateCode(String code)

Validates that the JavaScript code is safe to execute.

Should check for potentially dangerous operations like:

• eval()
• Function constructor
• Global object access
• File system operations

Throws JsEvaluationException if code is deemed unsafe.

Implementation

@override
void validateCode(String code) {
  final dangerous = [
    'eval(',
    'Function(',
    'setTimeout(',
    'setInterval(',
    'import(',
    'require(',
  ];

  for (final keyword in dangerous) {
    if (code.contains(keyword)) {
      throw JsEvaluationException('Dangerous code pattern detected: $keyword');
    }
  }
}