> I can't use a singleton for that; how do I know when that singleton is updated? It's up to the developer to make that decision. An AccountInfo control could

> I can't use a singleton for that; how do I know when that singleton is updated? It's up to the developer to make that decision. An AccountInfo control could be listening to "ACCOUNT_INFO_CHANGE" events (emitted when account info changes), and can subsequently rerender and read off some singleton state. Rerenders are explicit. And like you said, proxies could be another option.