import { Message, Provider, ReasoningRetention, RunState, Usage, UsageAccumulator } from "@graphorin/core";
import "@graphorin/memory";

//#region src/runtime/messages.d.ts

/**
 * Fold a completed (or failed - tokens were spent either way) child
 * run's usage into the parent run's accounting: `state.usage`,
 * `state.usageByModel` and the run's {@link UsageAccumulator}.
 * Children carrying a per-model breakdown fold model-by-model (each
 * child model entry counts as one attempt on the parent); a child
 * without `usageByModel` folds its aggregate under the synthetic id
 * `sub-agent:<name>`, skipped entirely when all-zero so phantom
 * entries never appear.
 *
 * Must be called exactly once per child run at exactly one seam -
 * a second call double-counts (pinned by test).
 */
declare function foldChildRunUsage(state: RunState, usageAcc: UsageAccumulator | undefined, childState: RunState, childName: string): void;
//#endregion
export { foldChildRunUsage };
//# sourceMappingURL=messages.d.ts.map