export type SessionUsageTimePoint = {
  timestamp: number;
  input: number;
  output: number;
  cacheRead: number;
  cacheWrite: number;
  totalTokens: number;
  cost: number;
  cumulativeTokens: number;
  cumulativeCost: number;
};

export type SessionUsageTimeSeries = {
  sessionId?: string;
  points: SessionUsageTimePoint[];
};