1: If decoding target platform doesn't support encoded error type, it will fallback to Error constructor. 2: If decoding target platform doesn't support Map, it will be decoded as array of [key, value]. 3: If decoding target platform doesn't support Set, ArrayBuffer or typed arrays, they will be decoded as array.You can extend replicator with custom type transform which will describe how to serialize/deserialize objects. You can add transforms using .addTransforms(transforms) method. And remove them using .removeTransforms(transforms) method. Both methods are chainable and accept single transform or array of transforms. You should add transforms to both encoding and decoding instances of replicator.