/**
 * Cost Tracker
 *
 * A session-based cost tracker that accumulates usage during processing.
 * Used by both CLI (for displaying costs) and SaaS (for billing).
 */
import type { MicroDollars, UsageRecord, UsageSummary } from './types';
/**
 * Cost tracker for accumulating usage during a processing session.
 *
 * Thread-safe design: each method operates atomically on the records array.
 *
 * @example
 * ```typescript
 * const tracker = new CostTracker()
 *
 * // Record AI usage
 * tracker.recordAI('gpt-4o-mini', 1000, 500)
 *
 * // Record geocoding
 * tracker.recordGeocoding(10)
 *
 * // Get summary
 * const summary = tracker.getSummary()
 * console.log(`Total cost: $${(summary.totalCostCents / 100).toFixed(2)}`)
 * ```
 */
export declare class CostTracker {
    private records;
    /**
     * Add a usage record.
     */
    addRecord(record: UsageRecord): void;
    /**
     * Add multiple usage records.
     */
    addRecords(records: UsageRecord[]): void;
    /**
     * Get all usage records.
     */
    getRecords(): readonly UsageRecord[];
    /**
     * Get the total cost in micro-dollars.
     */
    getTotalCostMicros(): MicroDollars;
    /**
     * Get the total cost in cents.
     */
    getTotalCostCents(): number;
    /**
     * Get a full usage summary.
     */
    getSummary(): UsageSummary;
    /**
     * Clear all records.
     */
    clear(): void;
    /**
     * Get count of records.
     */
    get recordCount(): number;
    /**
     * Check if there are any records.
     */
    get hasRecords(): boolean;
    /**
     * Format the current costs for display.
     */
    formatSummary(): string;
    /**
     * Create a JSON-serializable representation.
     */
    toJSON(): {
        totalCostMicros: MicroDollars;
        totalCostCents: number;
        records: UsageRecord[];
    };
    /**
     * Create a tracker from JSON data.
     */
    static fromJSON(data: {
        records: Array<Omit<UsageRecord, 'timestamp'> & {
            timestamp: string;
        }>;
    }): CostTracker;
}
/**
 * Create a new cost tracker.
 */
export declare function createCostTracker(): CostTracker;
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