import { Observable, ObservableResult } from './Observable';
export declare enum AgentState {
    INITIALIZING = "INITIALIZING",// Agent is starting up and configuring
    IDLE = "IDLE",// Agent is ready but not processing
    PROCESSING = "PROCESSING",// Agent is actively processing a message/task
    REASONING = "REASONING",// Agent is in reasoning/planning phase
    EXECUTING = "EXECUTING",// Agent is executing a planned action
    WAITING_FOR_TOOL = "WAITING_FOR_TOOL",// Agent is waiting for tool execution
    WAITING_FOR_LLM = "WAITING_FOR_LLM",// Agent is waiting for LLM response
    ERROR = "ERROR",// Agent encountered an error
    PAUSED = "PAUSED",// Agent execution temporarily paused
    SHUTDOWN = "SHUTDOWN"
}
export type StateTransition = {
    from: AgentState;
    to: AgentState;
    timestamp: string;
    reason?: string;
};
export declare class StateTracker extends Observable {
    private static instance;
    private currentStates;
    private stateHistory;
    private constructor();
    static getInstance(): StateTracker;
    setState(agentId: string, newState: AgentState, reason?: string): ObservableResult<boolean>;
    initializeAgent(agentId: string): ObservableResult<void>;
    shutdownAgent(agentId: string, reason?: string): ObservableResult<void>;
    private isValidTransition;
    private recordTransition;
    getCurrentState(agentId: string): AgentState | undefined;
    getStateHistory(agentId: string): StateTransition[];
    getStateStats(agentId: string): Record<AgentState, number>;
}