import type { CompatibleUsageAliases, TokenUsage } from "../token-usage.js";
export type UsageCounter = keyof CompatibleUsageAliases;
export declare function parseOpenAiUsage(raw: unknown, aliases?: CompatibleUsageAliases | undefined): TokenUsage | undefined;
export declare function parseFireworksUsage(rawUsage: unknown, performanceMetrics?: unknown, headers?: Headers | undefined): TokenUsage | undefined;
export declare function parseAnthropicUsage(raw: unknown): TokenUsage | undefined;
export declare function mergeAnthropicStreamUsage(previous: TokenUsage | undefined, current: TokenUsage): TokenUsage;
export declare function parseGeminiUsage(raw: unknown): TokenUsage | undefined;
export declare function parseOllamaUsage(raw: {
    prompt_eval_count?: number | undefined;
    eval_count?: number | undefined;
}): TokenUsage | undefined;