import { MessageFunctionType, Result } from '../types';
export interface IsMatchErrors {
    TARGET_ARGUMENT_NOT_A_STRING: MessageFunctionType;
}
export declare const IS_MATCH_ERRORS: IsMatchErrors;
/**
 * Checks if string matches the pattern.
 * Either matches('foo', /foo/i) or matches('foo', 'foo', 'i').
 * If given value is not a string, then it returns false.
 *
 * ### Example
 * ```
 * expect(isMatch('xyz', /xyz/).value).toBeTruthy()
 * ```
 *
 * @param target The value being checked.
 * @param pattern The match pattern
 * @param modifiers The modifiers
 */
export declare function isMatch(target: string, pattern: RegExp, modifiers?: string): Result<boolean | undefined>;