import { ValidationException } from './ValidationException';
/**
 * Is the value a plain object?
 * See: https://masteringjs.io/tutorials/fundamentals/pojo
 *
 * @example
 * ```ts
 * isPlainObject({}) // true
 * isPlainObject(new Person()) // false
 * ```
 *
 * @param value the value to check
 * @returns a boolean indicating whether the value is the expected type
 */
export declare const isPlainObject: <K extends string | number | symbol, V>(value: unknown | Record<K, V>) => value is Record<K, V>;
/**
 * Validate that the value is a plain object.
 * See: https://masteringjs.io/tutorials/fundamentals/pojo
 *
 * @example
 * ```ts
 * validatePlainObject({}) // null
 * validatePlainObject(new Person()) // ValidationException
 * ```
 *
 * @param value the value to check
 * @returns `null` if the value is the expected type or a `ValidationException`
 * if not
 */
export declare const validatePlainObject: (value: unknown) => ValidationException | null;
/**
 * Assert that the value is a plain object.
 * See: https://masteringjs.io/tutorials/fundamentals/pojo
 *
 * @example
 * ```ts
 * assertPlainObject({}) // void
 * assertPlainObject(new Person()) // throws AssertionException
 * ```
 *
 * @param value the value to check
 * @throws an `AssertionException` if the value is not the expected type
 */
export declare const assertPlainObject: <K extends string | number | symbol, V>(value: unknown | Record<K, V>) => asserts value is Record<K, V>;