import { TokenUsage } from '@tanstack/ai';
import { TokenUsage as ConverseTokenUsage } from '@aws-sdk/client-bedrock-runtime';
/**
 * Build normalized {@link TokenUsage} from a Converse `usage` object.
 *
 * `inputTokens` is the uncached part of the input only. Cache reads and writes
 * come as separate fields and go on `promptTokensDetails`, same as the Anthropic
 * and OpenAI builders. Zero is kept, unlike those builders. Bedrock leaves the
 * fields out when no checkpoint applied and sends 0 when one did (a served
 * checkpoint writes 0), so absent and zero are different results.
 */
export declare function buildConverseUsage(usage: ConverseTokenUsage): TokenUsage;