optional onApprovalRequest: (args) => void;

optional onApprovalRequest: (args) => void;

optional onCustomEvent: (eventType, data, context) => void;

optional onCustomEvent: (eventType, data, context) => void;

optional onError: (error) => void;

optional onError: (error) => void;

optional onMessagesChange: (messages) => void;

optional onMessagesChange: (messages) => void;

optional onStreamEnd: (message) => void;

optional onStreamEnd: (message) => void;

optional onStreamStart: () => void;

optional onStreamStart: () => void;

optional onTextUpdate: (messageId, content) => void;

optional onTextUpdate: (messageId, content) => void;

optional onThinkingUpdate: (messageId, content) => void;

optional onThinkingUpdate: (messageId, content) => void;

optional onToolCall: (args) => void;

optional onToolCall: (args) => void;

optional onToolCallStateChange: (messageId, toolCallId, state, args) => void;

optional onToolCallStateChange: (messageId, toolCallId, state, args) => void;