evaluate method

@override dynamic evaluate(String code, Map<String, dynamic> context)

Evaluates JavaScript code with the given context.

code - The JavaScript code to execute context - Variables/data available to the JavaScript code

Returns the result of the JavaScript evaluation, or null if evaluation fails.

Example:

final result = evaluator.evaluate(
  'data.price * data.quantity',
  {'data': {'price': 10.0, 'quantity': 5}},
);
print(result); // 50.0

Implementation

@override
dynamic evaluate(String code, Map<String, dynamic> context) {
  try {
    // Set context variables
    for (final entry in context.entries) {
      runtime.evaluate('var ${entry.key} = ${_encodeValue(entry.value)};');
    }

    // Execute code
    final result = runtime.evaluate(code);

    if (result.isError) {
      throw JsEvaluationException(
        'JavaScript execution error',
        result.stringResult,
      );
    }

    return _decodeValue(result.rawResult);
  } catch (e) {
    throw JsEvaluationException('Failed to evaluate JavaScript', e);
  }
}