export type AgentState = 'idle' | 'working' | 'tool-call' | 'blocked' | 'error' | 'completed';
export interface StatePattern {
    pattern: RegExp;
    state: AgentState;
}
export declare class StateDetector {
    private state;
    private lastActivity;
    private patterns;
    private idleThresholdMs;
    constructor(customPatterns?: StatePattern[], idleThresholdMs?: number);
    /** Process an SDK message and infer the agent's state. */
    onMessage(type: string, subtype?: string, text?: string): AgentState;
    /** Check if agent has gone idle based on time since last activity. */
    checkIdle(): AgentState;
    current(): AgentState;
    lastActiveAt(): number;
}
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