boonya/react-hook-form-validation

import { VALIDATION_MESSAGES, ValidatorPatternParams, ValidatorResult, ValidatorCommonParams, VALIDATORS } from '../types';
import { createValidatorResult } from '../helpers';

export default function create(pattern: RegExp, props: ValidatorCommonParams = {}) {
    return { validator: VALIDATORS.pattern, pattern, ...props };
}

export function isValid(input: string, { pattern, ...rest }: ValidatorPatternParams): ValidatorResult {
    const valid = input === undefined || input === '' || pattern.test(input);

    return createValidatorResult(
        valid,
        { fail: VALIDATION_MESSAGES.pattern, ...rest },
        [{ input }],
    );
}