Function isPendingToolCallAtIndex

packages/kosong/src/generate.ts:279–284

True when `pending` is a ToolCall whose _streamIndex equals `index`.

(
  pending: StreamedMessagePart | null,
  index: number | string,
)

/** True when `pending` is a ToolCall whose _streamIndex equals `index`. */
function isPendingToolCallAtIndex(
  pending: StreamedMessagePart | null,
  index: number | string,
): pending is ToolCall {
  return pending !== null && isToolCall(pending) && pending._streamIndex === index;
}

/**
 * Append a fully-merged part to the message.