@grundtone/utils

Formatting and validation utilities for the Grundtone design system.

Installation

npm install @grundtone/utils

Usage

import { formatCurrency, formatDanishDate, isValidCPR } from '@grundtone/utils';

formatCurrency(1234.56); // '1.234,56 kr.'
formatDanishDate(new Date()); // 'DD/MM/YYYY'
isValidCPR('123456-7890'); // true

API

Formatting

• formatCurrency(amount, currency?) - Format as Danish currency
• formatDanishDate(date) - Format date in Danish locale
• formatPhoneNumber(phone) - Format Danish phone number

Validation

• isValidCPR(cpr) - Validate Danish CPR number
• isValidEmail(email) - Validate email address
• isValidPhoneNumber(phone) - Validate Danish phone number
• isValidCVR(cvr) - Validate Danish CVR number (modulus 11)
• isValidURL(url) - Validate HTTP(S) URL
• isValidDate(day, month, year) - Validate a date exists (e.g. rejects 31 February)
• isDateInPast(day, month, year) - Check if date is before today
• isDateInFuture(day, month, year) - Check if date is after today

Validator factories

Composable validators for use with useField / useDateField:

import { required, email, date, datePast, composeValidators } from '@grundtone/utils';

const v = composeValidators(required('Required'), email('Invalid email'));
v('[email protected]'); // { isValid: true }

required, email, phone, cpr, cvr, date, datePast, dateFuture, minLength, maxLength, pattern, url, composeValidators

Documentation

See grundtone.com for full documentation.

License

MIT