callFunction method

@override JsEvalResult callFunction(Pointer<NativeType>? fn, Pointer<NativeType>? obj)

Implementation

@override
JsEvalResult callFunction(Pointer<NativeType>? fn, Pointer<NativeType>? obj) {
  JSValue fnValue = JSValuePointer(fn).getValue(context);
  JSObject functionObj = fnValue.toObject();
  JSValuePointer exception = JSValuePointer();
  JSValue result = functionObj.callAsFunction(
    functionObj,
    JSValuePointer(obj),
    exception: exception,
  );
  JSValue exceptionValue = exception.getValue(context);
  bool isPromise = false;

  if (exceptionValue.isObject) {
    throw Exception(
        'ERROR: ${exceptionValue.toObject().getProperty("message").string}');
  } else {
    isPromise = result.isObject &&
        result.toObject().getProperty('then').isObject &&
        result.toObject().getProperty('catch').isObject;
  }

  return JsEvalResult(
    _getJsValue(result.pointer),
    exceptionValue.isObject
        ? exceptionValue.toObject().pointer
        : result.pointer,
    isPromise: isPromise,
  );
}