Utilities

Utility functions for formatting, validation, and encryption.

Formatting

amountToWords()

Convert numeric amount to words for check writing.

import { amountToWords } from '@printchecks/core/utils'

const words = amountToWords(1250.50, 'USD')
// "One Thousand Two Hundred Fifty and 50/100 Dollars"

formatCurrency()

Format amount as currency string.

import { formatCurrency } from '@printchecks/core/utils'

const formatted = formatCurrency(1250.50, 'USD')
// "$1,250.50"

Validation

validateRoutingNumber()

Validate bank routing number format.

import { validateRoutingNumber } from '@printchecks/core/utils'

const isValid = validateRoutingNumber('123456789')
// true

validateCheckNumber()

Validate check number format.

import { validateCheckNumber } from '@printchecks/core/utils'

const isValid = validateCheckNumber('1001')
// true

validateAmount()

Validate amount is valid number.

import { validateAmount } from '@printchecks/core/utils'

const isValid = validateAmount(1250.50)
// true

Encryption

encrypt()

Encrypt data using AES-256-GCM.

import { encrypt } from '@printchecks/core/utils'

const encrypted = await encrypt('sensitive data', 'password')

decrypt()

Decrypt data.

import { decrypt } from '@printchecks/core/utils'

const decrypted = await decrypt(encrypted, 'password')

generateKey()

Generate encryption key from password.

import { generateKey } from '@printchecks/core/utils'

const key = await generateKey('password')

See Also

• PrintChecksCore
• User Guide