Function copyUsage

packages/agent-core/src/agent/usage/index.ts:8–10

(usage: TokenUsage)

export type UsageRecordScope = 'session' | 'turn';

function copyUsage(usage: TokenUsage): TokenUsage {
  return { ...usage };
}

export class UsageRecorder {
  private readonly byModel: Record<string, TokenUsage> = {};