import type { MessageParam } from '@anthropic-ai/sdk/resources';
import type { ProviderUsage } from '../../../provider.js';
import type { ToolDispatcher } from '../tool-dispatcher.js';
export interface SessionState {
    readonly messages: MessageParam[];
    currentModel: string;
    requestedModel: string;
    currentPermissionMode: string;
    userSystem: string | null;
    toolDispatcher: ToolDispatcher;
    lastUsage: ProviderUsage | null;
    closed: boolean;
    autoCompactThreshold: number | undefined;
}
export declare function createSessionState(opts: {
    model: string;
    requestedModel?: string;
    permissionMode: string;
    userSystem: string | null;
    toolDispatcher: ToolDispatcher;
    initialMessages?: MessageParam[];
    autoCompactThreshold?: number;
    initialUsageInputTokens?: number;
}): SessionState;