/**
 * StrictDB Guardrails — Dangerous operation protection
 *
 * Prevents accidental destructive operations like:
 * - deleteMany with empty filter (deletes all documents)
 * - updateMany with empty filter (modifies all documents)
 * - queryMany without limit (unbounded result set)
 * - deleteOne with empty filter (deletes arbitrary document)
 */
import type { StrictDBEventEmitter } from './events.js';
export interface GuardrailContext {
    enabled: boolean;
    limitRequired: boolean;
    emptyFilter: boolean;
    emitter: StrictDBEventEmitter;
}
/**
 * Check if an operation is safe to execute.
 * Throws StrictDBError with code GUARDRAIL_BLOCKED if blocked.
 */
export declare function checkGuardrails(ctx: GuardrailContext, operation: string, collection: string, filter: Record<string, unknown>, options?: {
    limit?: number;
    confirm?: string;
}): void;
/**
 * Check if an aggregate pipeline is safe to execute.
 * Blocks pipelines without $limit (unless they have $count, $group, $merge, $out).
 */
export declare function checkPipelineGuardrails(ctx: GuardrailContext, collection: string, pipeline: Record<string, unknown>[]): void;
/**
 * Check bulkWrite operations for dangerous patterns.
 */
export declare function checkBulkWriteGuardrails(ctx: GuardrailContext, collection: string, operations: Array<Record<string, unknown>>): void;
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