Function getAssistantMessageId

src/utils/tokens.ts:28–37

* Get the API response id for an assistant message with real (non-synthetic) usage. * Used to identify split assistant records that came from the same API response — * when parallel tool calls are streamed, each content block becomes a separate * AssistantMessage record, but they all share the sa

(message: Message)

 * AssistantMessage record, but they all share the same message.id.
 */
function getAssistantMessageId(message: Message): string | undefined {
  if (
    message?.type === 'assistant' &&
    'id' in message.message &&
    message.message.model !== SYNTHETIC_MODEL
  ) {
    return message.message.id
  }
  return undefined
}

/**
 * Calculate total context window tokens from an API response's usage data.