Summary
MessageStoreExtension is an abstract base class. To create MessageStoreExtension that customize message viewing, you should subclass MessageStoreExtension and implement the class methods your plugin needs.
To register your extension with the MessageStore, call MessageStore::registerExtension. When your package is being unloaded, you must call the corresponding MessageStore::unregisterExtension to unhook your extension.
activate: ->
MessageStore.registerExtension(MyExtension)
...
deactivate: ->
MessageStore.unregisterExtension(MyExtension)
The MessageStoreExtension API does not currently expose any asynchronous or Promise-based APIs. This will likely change in the future. If you have a use-case for a Message Store extension that is not possible with the current API, please let us know.
Class Methods
formatMessageBody()
Transform the message body HTML provided in body and return HTML
that should be displayed for the message.