import crypto from "node:crypto";

import type { NormalizedUsage } from "../usage.js";

export type PromptCacheChangeCode =

type PromptCacheChangeCode =

| "cacheRetention"

| "model"

| "streamStrategy"

detail: string;

};

export type PromptCacheSnapshot = {

type PromptCacheSnapshot = {

provider: string;

modelId: string;

modelApi?: string | null;

toolNames: string[];

};

export type PromptCacheObservationStart = {

type PromptCacheObservationStart = {

snapshot: PromptCacheSnapshot;

changes: PromptCacheChange[] | null;

previousCacheRead: number | null;

type SessionMessageEntry = Extract<SessionEntry, { type: "message" }>;

type ThinkingLevelChangeEntry = Extract<SessionEntry, { type: "thinking_level_change" }>;

export type TranscriptLeafControlEntry = {

type TranscriptLeafControlEntry = {

type: "leaf";

id: string;

parentId: string | null;