/**
 * Usage mapping for the inline wire path: Responses-API usage objects
 * project onto the harness TokenUsage shape exactly like the pi-ai adapter
 * (input minus cached, cache and reasoning split out as separate fields).
 * @module dsh-github-copilot/usage
 */
import type { TokenUsage } from '@deepseek-ai/dsh-llm';
/** The usage object carried by `response.completed` / `response.incomplete` (snake_case wire fields). */
export interface WireUsage {
    readonly input_tokens: number;
    readonly output_tokens: number;
    readonly total_tokens: number;
    readonly input_tokens_details?: {
        readonly cached_tokens?: number;
    };
    readonly output_tokens_details?: {
        readonly reasoning_tokens?: number;
    };
}
/**
 * Map a wire usage object to the harness TokenUsage shape.
 * @param usage - the provider usage object (snake_case wire fields).
 * @returns the harness usage; cache and reasoning fields are omitted when absent.
 */
export declare function mapUsage(usage: WireUsage): TokenUsage;
//# sourceMappingURL=usage.d.ts.map