import { MessageFunctionType, Result } from '../types';
export interface IsHalfWidthErrors {
    TARGET_ARGUMENT_NOT_A_STRING: MessageFunctionType;
}
export declare const IS_HALF_WIDTH_ERRORS: IsHalfWidthErrors;
export declare const halfWidth: RegExp;
/**
 * Tests whether the `target` is half width
 *
 * ### Example
 * ```
 * expect(isHalfWidth('l-btn_02--active').value).toBeTruthy()
 * ```
 *
 * @param target The target string
 */
export declare function isHalfWidth(target: string): Result<boolean | undefined>;