/**
 * Context Budgeter - Token budget management
 *
 * Manages token allocation across context components.
 */
/**
 * Budget allocation
 */
export interface BudgetAllocation {
    id: string;
    name: string;
    allocated: number;
    used: number;
    priority: number;
}
/**
 * Budgeter configuration
 */
export interface ContextBudgeterConfig {
    /** Total token budget */
    totalBudget: number;
    /** Reserved for response */
    responseReserve?: number;
    /** Allocation strategy */
    strategy?: 'proportional' | 'priority' | 'fixed';
    /** Token estimation ratio */
    tokenRatio?: number;
}
/**
 * ContextBudgeter - Manage token budgets
 */
export declare class ContextBudgeter {
    readonly id: string;
    private totalBudget;
    private responseReserve;
    private strategy;
    private tokenRatio;
    private allocations;
    constructor(config: ContextBudgeterConfig);
    /**
     * Get available budget
     */
    getAvailable(): number;
    /**
     * Request allocation
     */
    allocate(name: string, requested: number, priority?: number): BudgetAllocation | null;
    /**
     * Use tokens from allocation
     */
    use(allocationId: string, tokens: number): boolean;
    /**
     * Release allocation
     */
    release(allocationId: string): boolean;
    /**
     * Estimate tokens for text
     */
    estimateTokens(text: string): number;
    /**
     * Check if text fits in allocation
     */
    fits(allocationId: string, text: string): boolean;
    /**
     * Evict lower priority allocations
     */
    private evictLowerPriority;
    /**
     * Get all allocations
     */
    getAllocations(): BudgetAllocation[];
    /**
     * Get stats
     */
    getStats(): {
        totalBudget: number;
        responseReserve: number;
        allocated: number;
        used: number;
        available: number;
        allocationCount: number;
    };
    /**
     * Clear all allocations
     */
    clear(): void;
}
/**
 * Create context budgeter
 */
export declare function createContextBudgeter(config: ContextBudgeterConfig): ContextBudgeter;
export default ContextBudgeter;