import type { UsageMetrics } from '../../../types/ask-with-tools.types';
interface RawUsage {
    input_tokens?: number;
    output_tokens?: number;
    total_tokens?: number;
}
/** Normalize provider usage to the shared UsageMetrics shape. */
export declare function mapUsage(raw: RawUsage | null | undefined): UsageMetrics | null;
export {};
//# sourceMappingURL=usage-mapper.d.ts.map