import type { JsonPrimitive, Limits } from './types.js';
export interface SecurityOptionsLike {
    maxDepth?: number;
    maxArrayLength?: number;
    maxTotalNodes?: number;
    disallowedKeys?: string[];
    maxInputLength?: number;
}
export declare function applyLimits(options: SecurityOptionsLike): Limits;
export declare function enforceInputLength(text: string, options?: SecurityOptionsLike): void;
export declare function bumpNodes(state: {
    nodes: number;
}, limits: Limits, count: number, lineNo?: number): void;
export declare function enforceLimits(depth: number, limits: Limits, state: {
    nodes: number;
}): void;
/**
 * Depth-only guard. Use this in encoder helpers that have already been
 * accounted for by their caller (e.g. `encodeArray`/`encodeObject` reached
 * via `encodeValue`, which already bumped a node).
 */
export declare function enforceDepth(depth: number, limits: Limits): void;
export declare function validateKeySafety(key: string, limits?: Limits, lineNo?: number): void;
export declare function createSafeObject(): Record<string, unknown>;
export declare function isPrimitive(value: unknown): value is JsonPrimitive;
export declare function isPlainObject(value: unknown): value is Record<string, unknown>;
export declare function detectTabular(arr: unknown[]): {
    fields: string[];
    rows: Record<string, JsonPrimitive>[];
} | null;
//# sourceMappingURL=security.d.ts.map