Type Alias StreamEvent

StreamEvent:
    | StreamChunk & { delta: string; type: "model_delta" }
    | StreamChunk & { toolCall: ToolCall; type: "tool_call" }
    | StreamChunk & { toolResult: ToolCallResult; type: "tool_result" }
    | StreamChunk & { finishReason: FinishReason; type: "final" }