@modular-forms/react/dist/source/validation/pattern.js

The modular and type-safe form library for React

/**
 * Creates a validation functions that validates the pattern of a string.
 *
 * @param requirement The regex pattern.
 * @param error The error message.
 *
 * @returns A validation function.
 */
export function pattern(requirement, error) {
    return (value) => (value && !requirement.test(value) ? error : '');
}