import type { SessionEvent } from '../types/session.js';
export interface QueryFilter {
    eventTypes?: string[] | undefined;
    toolNames?: string[] | undefined;
    timeRange?: {
        start: string;
        end: string;
    } | undefined;
}
export interface ToolInvocation {
    ts: string;
    name: string;
    input: unknown;
    output?: unknown | undefined;
    error?: string | undefined;
    durationMs: number;
}
export interface SessionError {
    ts: string;
    phase: string;
    message: string;
}
export interface ModeChange {
    ts: string;
    from: string;
    to: string;
}
export interface TaskSummary {
    taskId: string;
    title: string;
    status: string;
    createdAt: string;
    completedAt?: string | undefined;
}
export interface SessionAnalysis {
    sessionId: string;
    totalDuration: number;
    toolUsageCount: Record<string, number>;
    errorCount: number;
    modeChanges: ModeChange[];
    tasks: TaskSummary[];
}
export declare class SessionAnalyzer {
    analyze(events: SessionEvent[]): SessionAnalysis;
    query(events: SessionEvent[], filter: QueryFilter): SessionEvent[];
    private calcDuration;
}
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