Function isToolCallPart

packages/kosong/src/message.ts:119–121

(part: StreamedMessagePart)

/** Check if a streamed part is a ToolCallPart (streaming argument delta). */
export function isToolCallPart(part: StreamedMessagePart): part is ToolCallPart {
  return part.type === 'tool_call_part';
}

/**
 * Merge `source` into `target` in-place for streaming accumulation.