Function parseLargeUsage

src/parser.ts:278–312

(source: string, usageBounds: JsonValueBounds | null)

}

function parseLargeUsage(source: string, usageBounds: JsonValueBounds | null) {
  const usage: AssistantMessageContent['usage'] = {
    input_tokens: readJsonNumberField(source, usageBounds, 'input_tokens') ?? 0,
    output_tokens: readJsonNumberField(source, usageBounds, 'output_tokens') ?? 0,
    cache_creation_input_tokens: readJsonNumberField(source, usageBounds, 'cache_creation_input_tokens'),
    cache_read_input_tokens: readJsonNumberField(source, usageBounds, 'cache_read_input_tokens'),
  }

  if (usageBounds?.kind === 'object') {
    const cacheCreation = findObjectFieldValue(source, usageBounds.start, usageBounds.end, 'cache_creation')
    const ephemeral5m = readJsonNumberField(source, cacheCreation, 'ephemeral_5m_input_tokens')
    const ephemeral1h = readJsonNumberField(source, cacheCreation, 'ephemeral_1h_input_tokens')
    if (ephemeral5m !== undefined || ephemeral1h !== undefined) {
      ;(usage as AssistantMessageContent['usage']).cache_creation = {
        ...(ephemeral5m !== undefined ? { ephemeral_5m_input_tokens: ephemeral5m } : {}),
        ...(ephemeral1h !== undefined ? { ephemeral_1h_input_tokens: ephemeral1h } : {}),
      }
    }

    const serverToolUse = findObjectFieldValue(source, usageBounds.start, usageBounds.end, 'server_tool_use')
    const webSearch = readJsonNumberField(source, serverToolUse, 'web_search_requests')
    const webFetch = readJsonNumberField(source, serverToolUse, 'web_fetch_requests')
    if (webSearch !== undefined || webFetch !== undefined) {
      ;(usage as AssistantMessageContent['usage']).server_tool_use = {
        ...(webSearch !== undefined ? { web_search_requests: webSearch } : {}),
        ...(webFetch !== undefined ? { web_fetch_requests: webFetch } : {}),
      }
    }

    const speed = readJsonString(source, findObjectFieldValue(source, usageBounds.start, usageBounds.end, 'speed'))
    if (speed === 'standard' || speed === 'fast') usage.speed = speed
  }

  return usage
}

function extractLargeToolBlocks(source: string, contentBounds: JsonValueBounds | null): ToolUseBlock[] {
  if (!contentBounds || contentBounds.kind !== 'array') return []