/**
 * Counts the number of elements in an array or the number of properties in an object.
 *
 * @param {Array<*>|Record<string | number | symbol, any>} obj - The array or object to count.
 * @returns {number} - The count of items (array elements or object keys), or `0` if the input is neither an array nor an object.
 *
 * @example
 * countObj([1, 2, 3]); // 3
 * countObj({ a: 1, b: 2 }); // 2
 * countObj('not an object'); // 0
 */
export function countObj(obj: Array<any> | Record<string | number | symbol, any>): number;
/**
 * Determines whether a given value is a pure JSON object (plain object).
 *
 * A pure object satisfies the following:
 * - It is not null.
 * - Its type is "object".
 * - Its internal [[Class]] is "[object Object]".
 * - It is not an instance of built-in types like Array, Date, Map, Set, etc.
 *
 * This function is useful for strict data validation when you want to ensure
 * a value is a clean JSON-compatible object, free of class instances or special types.
 *
 * @param {unknown} value - The value to test.
 * @returns {value is Record<string | number | symbol, unknown>} Returns true if the value is a pure object.
 */
export function isJsonObject(value: unknown): value is Record<string | number | symbol, unknown>;