Fabric.js canvas instance
File ID for this whiteboard
Whether the current user is the owner
OptionalonCalled when an async operation fails
OptionalonCalled when canvas is cleared by remote
OptionalonCalled when a remote object is added
OptionalonCalled when a remote object is modified
OptionalonCalled when a remote object is removed
OptionalonCalled when full state is received
OptionalstylesCustom styles
User ID
Options for the useWhiteboardSync hook