import { ConversationHistory, Message } from "gpt-turbo";
import { MessageStats } from "./MessageStats.js";
import { StatsPluginData } from "../utils/types/index.js";
import { ConversationStatsStatsUpdateListener } from "../utils/types/conversationStats.types.js";
export declare class ConversationStats {
    private readonly history;
    private _cumulativeSize;
    private _cumulativeCost;
    private readonly messageStats;
    private readonly statsUpdateEvents;
    constructor(history: ConversationHistory, options?: StatsPluginData);
    /**
     * Gets the stats for a message in the conversation history.
     *
     * @param id The message id to get stats for.
     * @returns The stats for the message with the given id.
     * @throws If the message with the given id is not found in the conversation history.
     */
    getMessageStats(id: string): MessageStats;
    /**
     * Shortcut for `getMessageStats(id).size`.
     */
    getMessageSize(id: string): number;
    /**
     * Shortcut for `getMessageStats(id).cost`.
     */
    getMessageCost(id: string): number;
    /**
     * Increments the cumulative size and cost of the conversation by the size and cost of the given message and the current conversation size and cost.
     *
     * @internal
     * Only meant to be used by gpt-turbo.
     */
    onChatCompletion(message: Message): void;
    /**
     * Gets the plugin data for the `Conversation` instance.
     *
     * @internal
     * Only meant to be used by gpt-turbo.
     */
    getPluginData(): StatsPluginData;
    /**
     * The current amount of tokens that the conversation contains.
     * This is the minimum amount of tokens that you will be charged for on your next prompt.
     *
     * @remarks
     * This is an estimate using the `gpt-tokenizer` library. Stats may vary with your actual usage of the API.
     */
    get size(): number;
    /**
     * The cumulative amount of tokens that were sent/received to/from the OpenAI API.
     *
     * @remarks
     * This is an estimate using the `gpt-tokenizer` library. Stats may vary with your actual usage of the API.
     */
    get cumulativeSize(): number;
    private set cumulativeSize(value);
    /**
     * The current cost of the conversation.
     * This is the minimum amount of $USD that you will be charged for on your next prompt.
     *
     * @remarks
     * This is an estimate using the `gpt-tokenizer` library. Stats may vary with your actual usage of the API.
     */
    get cost(): number;
    /**
     * The cumulative cost of the conversation.
     * This is the total amount of $USD that you have been charged for the conversation so far.
     *
     * @remarks
     * This is an estimate using the `gpt-tokenizer` library. Stats may vary with your actual usage of the API.
     */
    get cumulativeCost(): number;
    private set cumulativeCost(value);
    private createMessageStats;
    private getMessageById;
    onStatsUpdate(listener: ConversationStatsStatsUpdateListener): () => void;
    onceStatsUpdate(listener: ConversationStatsStatsUpdateListener): () => void;
    offStatsUpdate(listener: ConversationStatsStatsUpdateListener): void;
}