/**
 * @module @arcis/node/sanitizers/utils
 * Shared utilities for sanitizers
 */
/**
 * Encodes HTML entities to prevent interpretation as markup.
 *
 * @param str - The string to encode
 * @returns The encoded string
 */
export declare function encodeHtmlEntities(str: string): string;
/**
 * Checks if a value is a plain object (not null, array, Date, etc.)
 *
 * @param value - Value to check
 * @returns True if plain object
 */
export declare function isPlainObject(value: unknown): value is Record<string, unknown>;
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