import { MessageFunctionType, Result } from '../types';
export interface IsMultibyteErrors {
    TARGET_ARGUMENT_NOT_A_STRING: MessageFunctionType;
}
export declare const IS_MULTIBYTE_ERRORS: IsMultibyteErrors;
/**
 * Tests whether the `target` string contains one or more multibyte characters
 *
 * ### Example
 * ```
 * expect(isMultibyte('ｶﾀｶﾅ').value).toBeTruthy()
 * ```
 * @param target The target string
 */
export declare function isMultibyte(target: string): Result<boolean | undefined>;