import type { Entry } from "../types.js";
type SubagentsToolResultObserveOptions = {
    showSnapshot?: boolean;
};
export type LoadSessionHistoryOptions = {
    messages: readonly unknown[] | undefined;
    addEntry: (entry: Entry) => void;
    setToolEntryId: (toolCallId: string, entryId: string) => void;
    toolDefaultExpanded: (toolName: string) => boolean;
    observeSubagentsToolResult: (toolName: string, details: unknown, options?: SubagentsToolResultObserveOptions) => void;
    observeTodoToolResult: (toolName: string, details: unknown, isError: boolean) => void;
};
export type LoadSessionHistoryAsyncOptions = LoadSessionHistoryOptions & {
    prependEntries: (entries: readonly Entry[]) => void;
    render: () => void;
    isCancelled: () => boolean;
    chunkSize?: number;
    tailMessageCount?: number;
    lazyOlderHistory?: boolean;
    olderMessagesReader?: OlderSessionHistoryMessagesReader | undefined;
    onOlderLoaderReady?: (loader: SessionHistoryOlderLoader | undefined) => void;
};
export type LoadOlderSessionHistoryOptions = {
    render?: boolean;
    onPrependedEntries?: (entries: readonly Entry[]) => void;
};
export type SessionHistoryOlderLoader = {
    hasOlder(): boolean;
    isLoading(): boolean;
    loadedMessageCount(): number;
    totalMessageCount(): number;
    loadOlder(options?: LoadOlderSessionHistoryOptions): Promise<boolean>;
};
export type OlderSessionHistoryMessagesReader = {
    hasOlder(): boolean;
    readOlder(limit: number): Promise<readonly unknown[]>;
};
export declare function loadSessionHistoryEntries(options: LoadSessionHistoryOptions): void;
export declare function loadSessionHistoryEntriesAsync(options: LoadSessionHistoryAsyncOptions): Promise<boolean>;
export declare function customMessageEntry(message: Record<string, unknown>): Entry | undefined;
export declare function extensionSessionEntry(value: unknown): Extract<Entry, {
    kind: "extension-entry";
}> | undefined;
export declare function assistantTerminalErrorText(message: Record<string, unknown>): string | undefined;
export {};