Function normalizeException

plugins/jsvm/binds.go:1071–1091

normalizeException checks if the provided error is a goja.Exception and attempts to return its underlying Go error. note: using just goja.Exception.Unwrap() is insufficient and may falsely result in nil.

(err error)

//
// note: using just goja.Exception.Unwrap() is insufficient and may falsely result in nil.
func normalizeException(err error) error {
	if err == nil {
		return nil
	}

	jsException, ok := err.(*goja.Exception)
	if !ok {
		return err // no exception
	}

	switch v := jsException.Value().Export().(type) {
	case error:
		err = v
	case map[string]any: // goja.GoError
		if vErr, ok := v["value"].(error); ok {
			err = vErr
		}
	}

	return err
}

var cachedFactoryFuncTypes = store.New[string, reflect.Type](nil)